Runa Koizumi: 3.78 estimated dynamic rating · Rinconada PK

MatchPoint

Player profile

Runa Koizumi

USTA3.5

Rinconada PK

3.78

Estimated dynamic rating

▲ +0.99 this season

89% likely to move up

Is this you?Track your rating after each match, plus your teams' standings and playoff chances.This is me ›

Active teams · 9

BRAMHALL PK CW6.5A →2026 Combo Womens League 6.5 RINCONADA PK CW6.5A →2026 Combo Womens League 6.5 RINCONADA PK CW7.5A →2026 Combo Womens League 7.5

Combo · 2026

21 matches

Jan · 3.83

Nov · 3.92

Nov 1 · Doubles+0.11

W J. Arnheim / L. Hausman

6-0,6-7,1-0 · 1D · with Mo Horthong

Your combo rating, from combo matches only. It doesn’t move your 3.78.● Won ● Lost · Select a point to see that match.Your whole season is recalculated daily, so earlier points can shift as new results come in.

Current season

80 matches

Published NorCal results in 2026 — 38 scoring, 42 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Nov 1, 2026 · Doubles · 2D · Combo

Won 6-0,6-0

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Nanxi Li(partner)Currently on SUNNYVALE MTC CW6.5B

3.55

Opponents

Zhen LiuCurrently on SUNNYVALE MTC CW6.5D

3.11

Chengyu ChenCurrently on SUNNYVALE MTC CW6.5D

3.28

Combo rating 3.80 → 3.81Doubles result

Nov 1, 2026 · Doubles · 1D · Combo

Won 6-0,6-7,1-0

+0.11

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Mo Horthong(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT

4.30

Opponents

Julie ArnheimCurrently on UNIVERSITY CLUB PA CW7.5A-DT

3.61

Liza HausmanCurrently on UNIVERSITY CLUB PA CW7.5A

4.02

Combo rating 3.81 → 3.92Doubles result

Oct 30, 2026 · Doubles · 2D · Combo

Lost 3-6,2-6

−0.17

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Yaowei Guo(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.27

Opponents

Skylar SimpsonCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5C

4.01

Dana GiffordCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5A-DT

3.59

Combo rating 3.96 → 3.80Doubles result

Oct 29, 2026 · Doubles · 2D · Combo

Lost 2-6,4-6

−0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Taryn Yee(partner)Currently on RINCONADA PK CW8.5A

3.86

Opponents

June OngCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK CW8.5A-DT

4.27

Catherine PuzonCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK CW8.5A-DT

4.30

Combo rating 4.00 → 3.96Doubles result

Oct 29, 2026 · Doubles · 2D · Combo

Won 6-4,6-0

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Yaowei Guo(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.27

Opponents

Elaine ChiuCurrently on SILVER CREEK CW6.5A-DT

3.13

Rosemary GoCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A

3.00

Combo rating 3.96 → 3.96Doubles result

Oct 26, 2026 · Doubles · 1D · Combo

Won 6-2,6-2

+0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Shan Sun(partner)Currently on SUNNYVALE MTC CW6.5B

3.51

Opponents

Jane EnsorCurrently on SAN JOSE SR CW7.5A

3.51

Michelle YooCurrently on LOS GATOS SR CW6.5A

3.05

Combo rating 3.97 → 4.00Doubles result

Oct 25, 2026 · Doubles · 1D · Combo

Lost 6-4,2-6,0-1

−0.15

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Lacy Zhu(partner)Currently on WALNUT CREEK RC/Walnut Creek TC CW6.5C

3.23

Opponents

Dana GiffordCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5A-DT

3.59

Skylar SimpsonCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5C

4.01

Combo rating 4.12 → 3.97Doubles result

Oct 24, 2026 · Doubles · 3D · Combo

Lost 5-7,2-6

−0.14

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Leyla Scott(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.73

Opponents

Claire GeaCurrently on SUNNYVALE MTC CW8.5C

4.24

Samantha WongCurrently on SUNNYVALE MTC CW8.5D

3.86

Combo rating 4.25 → 4.12Doubles result

Oct 23, 2026 · Doubles · 1D · Combo

Won 6-0,7-5

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Chanchan Du(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.42

Opponents

Chi BuckleyCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

3.15

Sue Lin HoltCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

3.21

Combo rating 4.25 → 4.25Doubles result

Oct 20, 2026 · Doubles · 2D · Combo

Lost 1-6,4-6

−0.14

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Anna Plume(partner)Currently on SAN CARLOS TC/ARGUELLO PK CW7.5B-DT

3.78

Opponents

Sofia VallaCurrently on SHARON HTS CC CW8.5A

4.52

Phuong NguyenCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5E

3.77

Combo rating 4.39 → 4.25Doubles result

Oct 18, 2026 · Doubles · 3D

Lost 2-6,4-6

−0.11

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Nikki Chen(partner)Currently on RINCONADA PK CW7.5A

3.50

Opponents

Lang LindsayCurrently on WALNUT CREEK RC/Walnut Creek TC CW7.5A-DT

3.71

Amber GoliniCurrently on WALNUT CREEK RC/Walnut Creek TC CW8.5A

3.84

Rating 3.89 → 3.78Doubles result

Oct 17, 2026 · Doubles · 3D

Won 6-1,6-3

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Jiu Jung(partner)Currently on MOUNTAIN VIEW TC/RENGSTORFF PK CW7.5A

3.11

Opponents

Tracie CacciatoreCurrently on DIAMOND HILLS CW6.5A

3.28

Shirley RazdoroffCurrently on DIAMOND HILLS CW6.5A

3.11

Rating 3.88 → 3.89Doubles result

Oct 15, 2026 · Doubles · 1D · Combo

Won 6-4,6-1

+0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Xuezhen Fan(partner)Currently on RINCONADA PK CW8.5A

4.31

Opponents

Claiborne BrownCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A

3.79

Melina CareyCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

3.52

Combo rating 4.33 → 4.39Doubles result

Oct 13, 2026 · Doubles · 2D · Combo

Won 6-4,5-7,1-0

+0.14

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Daisy Lewis(partner)Currently on SUNNYVALE MTC CW8.5B

4.59

Opponents

Emily VainbergCurrently on MENLO ATHERTON HS CW8.5A

4.02

May WangCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5F

4.21

Combo rating 4.19 → 4.33Doubles result

Oct 3, 2026 · Doubles · 1D · Combo

Won 6-0,6-1

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Nanxi Li(partner)Currently on SUNNYVALE MTC CW6.5B

3.55

Opponents

Terry HuangCurrently on SUNNYVALE MTC CW6.5E

3.33

Juyeon KimCurrently on SUNNYVALE MTC CW6.5E

3.22

Combo rating 4.17 → 4.18Doubles result

Oct 3, 2026 · Doubles · 3D · Combo

Won 6-1,6-3

+0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Chunhong Zhou(partner)Currently on SUNNYVALE MTC CW6.5E

3.43

Opponents

Allison LeeCurrently on CUESTA TC CW6.5B

3.29

Debbie AbabaCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5D

3.42

Combo rating 4.18 → 4.19Doubles result

Oct 1, 2026 · Doubles · 1D · Combo

Won 6-4,6-3

+0.10

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Maya Grosul(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.80

Opponents

Bridget CashCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5A-DT

3.96

Nina TsunedaCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A

3.60

Combo rating 4.07 → 4.17Doubles result

Sep 28, 2026 · Doubles · 1D · Combo

Won 7-6,3-6,1-0

+0.10

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Pegah Seddighian(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.62

Opponents

Yue WuCurrently on SUNNYVALE MTC CW8.5D

3.85

Zixiao ChengCurrently on SUNNYVALE MTC CW7.5B

3.90

Combo rating 3.98 → 4.07Doubles result

Sep 26, 2026 · Doubles · 1D · Combo

Won 6-3,6-0

+0.00

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Mengjiao Zhang(partner)Currently on SUNNYVALE MTC CW6.5D

3.45

Opponents

Jingyi MuCurrently on SUNNYVALE MTC CW5.5A

2.98

Melody WangCurrently on SUNNYVALE MTC CW6.5D

3.21

Combo rating 3.97 → 3.98Doubles result

Sep 6, 2026 · Doubles · 1D · Combo

Won 6-3,3-6,1-0

+0.09

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Privina Sexton(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW8.5F

4.18

Opponents

Elena RishesCurrently on FOSTER CITY TC/EDGEWATER PK CW8.5A

4.01

Ashley ChangCurrently on FOSTER CITY TC/EDGEWATER PK CW7.5A

3.76

Combo rating 3.88 → 3.97Doubles result

Sep 5, 2026 · Doubles · 1D · Combo

Won 6-4,6-2

+0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Eva Wu(partner)Currently on SUNNYVALE MTC CW6.5B

3.53

Opponents

Lexi HeCurrently on SUNNYVALE MTC CW6.5D

3.50

Shanshan ChenCurrently on SUNNYVALE MTC CW6.5D

3.44

Combo rating 3.85 → 3.88Doubles result

Aug 29, 2026 · Doubles · 1D · Combo

Won 6-1,6-2

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Lacy Zhu(partner)Currently on WALNUT CREEK RC/Walnut Creek TC CW6.5C

3.23

Opponents

Tamara DunnCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5A

3.19

Tiffany DheedeneCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5A

2.90

Combo rating 3.85 → 3.85Doubles result

Aug 9, 2026 · Doubles

Won 6-2,6-3

+0.06

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yangmei Zheng(partner)Currently on RINCONADA PK CW6.5A

3.41

Opponents

Audra LutterCurrently on WALNUT CREEK RC/Walnut Creek TC CW7.5A

3.20

Lang LindsayCurrently on WALNUT CREEK RC/Walnut Creek TC CW7.5A-DT

3.71

Rating 3.79 → 3.85Doubles result

Aug 9, 2026 · Doubles

Won 6-4,6-1

+0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Hurjane Vongsachang(partner)Currently on RINCONADA PK CW8.5A

3.42

Opponents

Mimi FichterCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.30

Judy HsuCurrently on BAY CLUB SANTA CLARA CW7.5A

3.51

Rating 3.85 → 3.88Doubles result

Aug 7, 2026 · Doubles

Won 6-0,6-2

+0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Hurjane Vongsachang(partner)Currently on RINCONADA PK CW8.5A

3.42

Opponents

Kim WatsonCurrently on SOUTH RENO TENNIS 55MX8.0A

3.47

Nathalie AtwellCurrently on SOUTH RENO TENNIS CW7.5A

3.46

Rating 3.73 → 3.77Doubles result

Aug 7, 2026 · Doubles

Won 6-0,6-0

+0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yangmei Zheng(partner)Currently on RINCONADA PK CW6.5A

3.41

Opponents

Regina MorrisonCurrently on SPANISH BAY CW7.5A-DT

3.39

Nicole Truszkowski

3.32

Rating 3.77 → 3.79Doubles result

Jun 27, 2026 · Doubles

Won 5-7,6-4,1-0

+0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yangmei Zheng(partner)Currently on RINCONADA PK CW6.5A

3.41

Opponents

Jenny HarleyCurrently on ALPINE HILLS CW7.5A-DT

3.45

Lauren SaganCurrently on ALPINE HILLS CW7.5A-DT

3.41

Rating 3.70 → 3.73Doubles result

Jun 14, 2026 · Doubles

Won 6-2,6-4

+0.07

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yemia Hashimoto(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.60

Opponents

Jennifer ChonCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5C

3.38

Skylar SimpsonCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5C

3.67

Rating 3.63 → 3.70Doubles result

Jun 12, 2026 · Doubles

Won 7-6,6-2

+0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Ko-Yun Chen(partner)Currently on BRAMHALL PK CW7.5A

2.93

Opponents

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A

3.26

Stacie PittengerCurrently on SILVER CREEK CW7.5A

3.31

Rating 3.61 → 3.63Doubles result

Jun 10, 2026 · Doubles

Won 6-2,6-4

+0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Volga B Calvello(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.39

Opponents

Yaqiong Wang

3.41

Amy Li

3.48

Rating 3.56 → 3.61Doubles result

Jun 7, 2026 · Doubles

Won 6-4,2-6,1-0

+0.09

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Rina Tsujimoto(partner)Currently on SUNNYVALE MTC CW8.5C

3.59

Opponents

Jennifer DoCurrently on PLEASANTON CW8.5B

3.86

Jessica Zhang

3.52

Rating 3.49 → 3.59Doubles result

Jun 7, 2026 · Doubles

Lost 5-7,5-7

−0.03

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Lenka Quinanola(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A

3.78

Opponents

Emily LingCurrently on SUNNYVALE MTC CW8.5B

4.26

Elizabeth CareyCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK CW7.5A

4.17

Rating 3.59 → 3.56Doubles result

Jun 6, 2026 · Doubles

Lost 1-6,3-6

−0.12

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Rina Tsujimoto(partner)Currently on SUNNYVALE MTC CW8.5C

3.59

Opponents

Lisa BackusCurrently on SUNNYVALE MTC CW8.5D

4.01

Sally KimCurrently on BAY CLUB COURTSIDE CW7.5B

3.70

Rating 3.62 → 3.49Doubles result

May 31, 2026 · Doubles

Lost 6-2,3-6,0-1

−0.07

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Lan Wu(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT

3.87

Opponents

Aki CollardCurrently on HIGHLANDS REC CENTER CW8.5A

3.94

Lisa KeslerCurrently on FOSTER CITY TC/EDGEWATER PK CW8.5A

3.91

Rating 3.69 → 3.62Doubles result

May 30, 2026 · Doubles

Lost 0-6,1-6

−0.09

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Rina Tsujimoto(partner)Currently on SUNNYVALE MTC CW8.5C

3.59

Opponents

Stacey Blackman

4.09

Nancy DeschaneCurrently on WALNUT CREEK RC/Walnut Creek TC CW8.5A

4.05

Rating 3.77 → 3.69Doubles result

May 27, 2026 · Doubles

Won 4-6,6-3,1-0

+0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yemia Hashimoto(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.60

Opponents

Debbie AbabaCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5D

3.07

Paige RossCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5A

3.63

Rating 3.75 → 3.77Doubles result

May 26, 2026 · Doubles

Won 6-2,6-1

+0.14

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Maya Grosul(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.62

Opponents

Michele WangCurrently on UNIVERSITY CLUB PA CW7.5A-DT

3.65

Colleen BackstrandCurrently on UNIVERSITY CLUB PA CW7.5A-DT

3.92

Rating 3.61 → 3.75Doubles result

May 23, 2026 · Doubles

Lost 7-6,1-6,0-1

−0.20

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yeping Hu(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.18

Opponents

Nikki ChenCurrently on RINCONADA PK CW7.5A

3.50

Jing ShiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A-DT

3.42

Rating 3.81 → 3.61Doubles result

May 20, 2026 · Doubles

Won 6-7,6-2,1-0

+0.08

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Pegah Seddighian(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.73

Opponents

Julie ColwellCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5A-DT

3.68

Bridget CashCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5A-DT

3.88

Rating 3.72 → 3.81Doubles result

May 18, 2026 · Doubles

Won 6-1,6-1

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Melodie Rubin(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.32

Opponents

Aiko MurakamiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A-DT

3.41

Elizabeth ShenCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

2.86

Rating 3.71 → 3.72Doubles result

May 17, 2026 · Doubles

Won 3-6,7-5,1-0

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Meijia Chen(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A-DT

3.34

Opponents

Veronica SanchezCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.17

Terry HuangCurrently on SUNNYVALE MTC CW6.5E

3.34

Rating 3.80 → 3.81Doubles result

May 17, 2026 · Doubles

Lost 3-6,4-6

−0.10

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Kyung-Le Han(partner)Currently on SUNNYVALE MTC CW7.5D-DT

3.56

Opponents

Chenchen ZhangCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT

3.85

Xuezhen FanCurrently on RINCONADA PK CW8.5A

4.05

Rating 3.81 → 3.71Doubles result

May 13, 2026 · Doubles

Won 6-1,7-6

+0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Rina Tsujimoto(partner)Currently on SUNNYVALE MTC CW8.5C

3.59

Opponents

Dona RayCurrently on PLEASANTON CW7.5B

3.52

Priya KudluCurrently on PLEASANTON CW8.5C

3.59

Rating 3.76 → 3.80Doubles result

May 10, 2026 · Doubles

Won 6-2,6-4

+0.07

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Puhe Liang(partner)Currently on SUNNYVALE MTC CW7.5B

3.74

Opponents

Katherine SandellCurrently on BAY CLUB COURTSIDE CW7.5A

3.35

Hilary ButlerCurrently on BAY CLUB COURTSIDE CW7.5B-DT

3.79

Rating 3.68 → 3.76Doubles result

May 9, 2026 · Doubles

Won 6-1,6-1

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yi Zhang(partner)Currently on SUNNYVALE MTC CW8.5E

3.47

Opponents

Deena ElfarCurrently on BAY CLUB COURTSIDE CW7.5C

3.19

Gigi HarveyCurrently on BAY CLUB COURTSIDE CW7.5C

3.08

Rating 3.67 → 3.68Doubles result

May 3, 2026 · Doubles

Won 6-3,6-3

+0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Annarose Pamatmat(partner)

3.54

Opponents

Stephanie FinleyCurrently on FOSTER CITY TC/EDGEWATER PK CW6.5A

3.50

Caroline LeeCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5B

3.40

Rating 3.63 → 3.67Doubles result

May 2, 2026 · Doubles

Won 7-6,2-6,1-0

+0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Maya Grosul(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A

3.62

Opponents

Jane DongCurrently on SUNNYVALE MTC CW7.5B

3.39

Vy Nguyen

3.57

Rating 3.59 → 3.63Doubles result

Apr 29, 2026 · Doubles

Won 6-4,6-2

+0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Xin Yang(partner)Currently on SUNNYVALE MTC CW6.5E

3.16

Opponents

Ashley ChangCurrently on FOSTER CITY TC/EDGEWATER PK CW7.5A

3.82

Xiaodan KangCurrently on SUNNYVALE MTC CW6.5D

3.13

Rating 3.54 → 3.59Doubles result

Apr 26, 2026 · Doubles

Won 5-7,6-4,1-0

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Elizabeth Brackenbury(partner)Currently on UNIVERSITY CLUB PA CW6.5A-DT

3.02

Opponents

Lingqin YangCurrently on SUNNYVALE MTC CW6.5B

2.98

Xingfan JiaCurrently on SUNNYVALE MTC CW6.5B

3.40

Rating 3.53 → 3.54Doubles result

Apr 25, 2026 · Doubles

Won 6-3,6-4

+0.08

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Rina Tsujimoto(partner)Currently on SUNNYVALE MTC CW8.5C

3.59

Opponents

Alba LevitasCurrently on LOS GATOS SR CW8.5A

3.81

Katarina WarnstromCurrently on LOS GATOS SR CW7.5B

3.41

Rating 3.45 → 3.53Doubles result

Apr 22, 2026 · Doubles

Won 6-3,6-4

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Phuong Nguyen(partner)Currently on SAN CARLOS TC/ARGUELLO PK CW6.5E

3.33

Opponents

Colleen McculloughCurrently on SUNNYVALE MTC CW6.5A

3.06

Michelle NeyCurrently on SUNNYVALE MTC CW6.5A

3.02

Rating 3.44 → 3.45Doubles result

Apr 19, 2026 · Doubles

Won 6-3,6-3

+0.08

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Wei Zheng(partner)Currently on SUNNYVALE MTC CW6.5D

3.37

Opponents

Meijia ChenCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A-DT

3.34

Jieying ShiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A-DT

3.60

Rating 3.43 → 3.50Doubles result

Apr 19, 2026 · Doubles

Lost 5-7,6-3,0-1

−0.06

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Lan Wu(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT

3.87

Opponents

Ameeta MukherjeeCurrently on SUNNYVALE MTC CW8.5B

3.89

Babette Van AntwerpenCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5A

4.05

Rating 3.50 → 3.44Doubles result

Apr 18, 2026 · Doubles

Won 1-6,7-6,1-0

+0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Lan Wu(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT

3.87

Opponents

Yue XuCurrently on SUNNYVALE MTC CW6.5D

3.73

Yangmei ZhengCurrently on RINCONADA PK CW6.5A

3.41

Rating 3.38 → 3.43Doubles result

Apr 17, 2026 · Doubles

Lost 3-6,2-6

−0.08

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Masami Matsuura(partner)Currently on SUNNYVALE MTC CW7.5D-DT

3.71

Opponents

Arianna ChoingCurrently on BAY TREES PK CW7.5A

4.08

Christy MaCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5F

3.98

Rating 3.46 → 3.38Doubles result

Mar 28, 2026 · Doubles · Mixed

Lost 1-6,3-6

−0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

David Le(partner)Currently on SUNNYVALE MTC CM9.5A

4.06

Opponents

Keri SmithCurrently on RINCONADA PK CW8.5A

4.66

Kehan LiCurrently on SUNNYVALE MTC CM9.5A

4.49

Mixed rating 3.89 → 3.88Doubles result

Mar 28, 2026 · Doubles · Mixed

Lost 3-6,3-6

−0.17

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shengchen Liu(partner)

2.97

Opponents

Junpeng YaoCurrently on SUNNYVALE MTC CM7.5E

3.94

Jia HeCurrently on CUESTA TC CW5.5A

2.97

Mixed rating 3.88 → 3.72Doubles result

Mar 22, 2026 · Doubles

Won 6-4,6-1

+0.06

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yue Xu(partner)Currently on SUNNYVALE MTC CW6.5D

3.73

Opponents

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT

3.50

Nina KimCurrently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.36

Rating 3.40 → 3.46Doubles result

Mar 20, 2026 · Doubles

Won 6-0,3-6,1-0

+0.07

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Nikki Chen(partner)Currently on RINCONADA PK CW7.5A

3.50

Opponents

Sara CrateCurrently on TIBURON PEN C CW6.5A

3.43

Ilana RothCurrently on MT TAM RC CW7.5A

3.60

Rating 3.26 → 3.33Doubles result

Mar 20, 2026 · Doubles

Won 6-3,6-1

+0.06

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.78

Yue Xu(partner)Currently on SUNNYVALE MTC CW6.5D

3.73

Opponents

Claiborne BrownCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5A

3.48

Jennifer WalkerCurrently on UNIVERSITY CLUB PA CW7.5A-DT

3.40

Rating 3.33 → 3.40Doubles result

Mar 14, 2026 · Doubles · Mixed

Won 4-6,6-1,1-0

+0.16

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shu Fan Du(partner)Currently on FOSTER CITY TC/EDGEWATER PK CM8.5B

3.98

Opponents

Mark DinhCurrently on REFUGIO PK CM8.5A

4.30

Yingfei WuCurrently on SAN CARLOS TC/ARGUELLO PK CW6.5B

3.57

Mixed rating 3.73 → 3.89Doubles result

Mar 13, 2026 · Doubles · Mixed

Lost 6-7,7-6,0-1

−0.10

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Jo Zhang(partner)Currently on RINCONADA PK CM7.5A

3.35

Opponents

Daniel HoulbrookCurrently on SUNNYVALE TC/SUNNYVALE MTC CM6.5D

3.42

Sue Lin HoltCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

2.97

Mixed rating 3.83 → 3.73Doubles result

Mar 8, 2026 · Doubles · Mixed

Lost 1-6,6-3,0-1

−0.11

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Zhouyang Li(partner)Currently on BRAMHALL PK CM7.5B

3.24

Opponents

David LaoCurrently on RINCONADA PK CM9.5B

4.30

Xiwen ZhaoCurrently on BRAMHALL PK CW6.5A

3.29

Mixed rating 3.89 → 3.79Doubles result

Mar 8, 2026 · Doubles · Mixed

Won 6-1,6-1

+0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shengchen Liu(partner)

2.97

Opponents

Lucas LuoCurrently on SUNNYVALE MTC CM6.5F

3.09

Jin Zhang

3.33

Mixed rating 3.79 → 3.83Doubles result

Mar 7, 2026 · Doubles · Mixed

Won 6-1,6-1

+0.07

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shi Dong(partner)Currently on SUNNYVALE MTC CM7.5D

3.83

Opponents

Avinash ViswanathanCurrently on WALLENBERG PK CM7.5A

3.72

Cynthia JamesCurrently on FREMONT TC CW7.5A

3.11

Mixed rating 3.82 → 3.89Doubles result

Mar 1, 2026 · Doubles · Mixed

Lost 6-7,6-7

−0.12

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Rohan Shrotriya(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CM7.5A

3.14

Opponents

Henry LuCurrently on RINCONADA PK CM7.5B

3.48

Baozhang RenCurrently on SUNNYVALE MTC CW7.5B

3.91

Mixed rating 3.94 → 3.82Doubles result

Feb 28, 2026 · Doubles · Mixed

Lost 4-6,1-6

−0.19

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shengchen Liu(partner)

2.97

Opponents

Ryan Lau

3.91

Yuchen ZhangCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW5.5A

3.44

Mixed rating 4.13 → 3.94Doubles result

Feb 26, 2026 · Doubles · Mixed

Won 6-1,6-2

+0.08

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shi Dong(partner)Currently on SUNNYVALE MTC CM7.5D

3.83

Opponents

Yi Cui

3.03

Wei Jing

3.89

Mixed rating 4.05 → 4.13Doubles result

Feb 25, 2026 · Doubles · Mixed

Won 6-2,6-3

+0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Eric Chu(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CM7.5A

3.50

Opponents

Amanda HolmquistCurrently on SAN JOSE SR CW7.5A

3.08

Basim NooriCurrently on SUNNYVALE TC/SUNNYVALE MTC CM6.5G

3.03

Mixed rating 4.03 → 4.05Doubles result

Feb 23, 2026 · Doubles · Mixed

Won 6-3,6-4

+0.12

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Yubo Ouyang(partner)Currently on SUNNYVALE MTC CM7.5E

3.65

Opponents

Qiang Hu

3.39

Christy MaCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5F

4.02

Mixed rating 3.91 → 4.03Doubles result

Feb 14, 2026 · Doubles · Mixed

Won 2-6,7-5,1-0

+0.10

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shi Dong(partner)Currently on SUNNYVALE MTC CM7.5D

3.83

Opponents

Shang LiuCurrently on PLEASANTON 55MX7.0B

3.98

Jing ZhaoCurrently on SUNNYVALE MTC CW6.5B

3.28

Mixed rating 3.81 → 3.91Doubles result

Feb 9, 2026 · Doubles · Mixed

Lost 6-7,1-6

−0.05

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Surik Torosyan(partner)Currently on SUNNYVALE MTC CM9.5C

4.10

Opponents

Hurjane VongsachangCurrently on RINCONADA PK CW8.5A

4.09

Kehan LiCurrently on SUNNYVALE MTC CM9.5A

4.49

Mixed rating 3.85 → 3.81Doubles result

Feb 8, 2026 · Doubles · Mixed

Won 6-4,6-1

+0.18

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Donny Su(partner)Currently on LOS ALTOS TC/LOS ALTOS GCC CM8.5A

4.65

Opponents

Juan CastilloCurrently on SUNNYVALE TC/SUNNYVALE MTC CM8.5F

4.12

Zixiao ChengCurrently on SUNNYVALE MTC CW7.5B

3.65

Mixed rating 3.67 → 3.85Doubles result

Feb 3, 2026 · Doubles · Mixed

Won 6-2,6-2

+0.01

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Edison Huang(partner)

3.38

Opponents

Bob WhitakerCurrently on SAN CARLOS TC/ARGUELLO PK 55MX7.0A

3.22

Kirsten CunninghamCurrently on BAY CLUB COURTSIDE CW7.5C

3.00

Mixed rating 3.66 → 3.67Doubles result

Jan 31, 2026 · Doubles · Mixed

Won 6-4,7-5

+0.15

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Shi Dong(partner)Currently on SUNNYVALE MTC CM7.5D

3.83

Opponents

Dan GullionCurrently on WALNUT CREEK RC/Walnut Creek TC CM8.5B

4.05

Yang YangCurrently on SUNNYVALE MTC CW6.5B

3.50

Mixed rating 3.51 → 3.66Doubles result

Jan 30, 2026 · Doubles · Mixed

Won 4-6,7-6,1-0

+0.04

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Jeremy Qiao Chen(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CM7.5A

3.53

Opponents

Drew ZoghbyCurrently on SUNNYVALE TC/SUNNYVALE MTC CM6.5D

3.18

Annarose Pamatmat

3.35

Mixed rating 3.54 → 3.57Doubles result

Jan 30, 2026 · Doubles · Mixed

Lost 1-6,6-4,0-1

−0.06

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Rohan Shrotriya(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C CM7.5A

3.14

Opponents

Qing FengCurrently on BAY CLUB SANTA CLARA CM7.5B

3.92

Haewon KwonCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW6.5A-DT

4.11

Mixed rating 3.57 → 3.51Doubles result

Jan 24, 2026 · Doubles · Combo

Won 6-0,6-1

+0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.92

Yeping Hu(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.58

Opponents

Catherine GougeCurrently on OLYMPIC CW7.5A

3.39

Amanda MartialCurrently on OLYMPIC CW6.5A

3.28

Combo rating 3.83 → 3.85Doubles result

Jan 20, 2026 · Doubles · Mixed

Won 7-5,7-6

+0.23

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

David Lao(partner)Currently on RINCONADA PK CM9.5B

4.30

Opponents

Andrew HuangCurrently on RINCONADA PK CM7.5A

4.21

Maggie YuenCurrently on SUNNYVALE MTC CW8.5D

4.20

Mixed rating 3.31 → 3.54Doubles result

Jan 17, 2026 · Doubles · Mixed

Lost 5-7,0-6

−0.02

Runa’s side

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.72

Stephen Lee(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CM8.5F

4.18

Opponents

Yukari Saito

4.53

Yuta TaguchiCurrently on PINEWOOD PK CM8.5A

4.06

Mixed rating 3.33 → 3.31Doubles result

Combo and mixed results move their own ratings, not your NTRP. USTA computes NTRP from adult singles and doubles only.

Best match

+0.14

Oct 13 vs E. Vainberg / M. Wang

Worst match

−0.17

Oct 30 vs S. Simpson / D. Gifford

▲

Combo and mixed matches aren’t included. This rating is built from standard men’s and women’s league play only — combo and mixed results feed your separate combo/mixed ratings, not this one.

Updated Nov 4

Year-end re-anchoring

Pulled toward the 2024 year-end level−0.332.46

Pulled toward the 2025 year-end level−0.173.26

More about Runa

Runa Koizumi has been a USTA NorCal 3.5 since 2025, after starting at 3.0 in 2024. The estimated dynamic rating is 3.78, up 0.99 this season, with a 57–23 record in 2026 across regular, combo and mixed play. Most frequent partner: Maya Grosul, 7–1 in 8 matches together.

Record

57–23

2026 season, 80 matches

37–17

2025 season, 54 matches

Longest winning streak

25–11

Matches that went to a third set or match tiebreak

Partners

Maya Grosul8 matches together7–1
Shi Dong5 matches together5–0
Rina Tsujimoto5 matches together3–2

Best wins

Against the highest-rated opponents by year-end NTRP, this season and last.

d. Emily Vainberg (4.0) / May Wang (4.0)Oct 13, 2026 · Combo6-4, 5-7, 1-0
d. Bridget Cash (4.0) / Nina Tsuneda (4.0)Oct 1, 2026 · Combo6-4, 6-3

Year-end NTRP, 2024–2026

3.0 in 2024 and 3.5 from 2025 to 2026.

MatchPoint's estimated dynamic rating is an independent estimate from published USTA NorCal league results through November 4, 2026. It is not a rating USTA calculates, and MatchPoint is not affiliated with USTA.

Is this you, Runa?

Track your rating after each match.

Who you played, their ratings and what it did to yours, plus each team's standings and playoff chances. Free. Pick your name once to start.

This is me

Captain a team?

Win more matches with less captain work.

Use ratings, availability, and opponent context to build better lineups—and get your time back.

Set up my team

Runa Koizumi: estimated dynamic rating

More about Runa

Record

Partners

Best wins

Year-end NTRP, 2024–2026

Track your rating after each match.

Win more matches with less captain work.