Katharine Heintz · NorCal tennis rating

MatchPoint

Player profile

Katharine Heintz

USTA 3.0 · NorCal league player

2.81

current

▲ +0.02 this season

Other formats · don’t affect your rating above

Combo 2.78Mixed 3.31

Active teams · 4

SAN JOSE SR CW6.5A →2026 Combo Womens League 6.5 SUNNYVALE TC/SUNNYVALE MTC 40MX7.0C →2026 Mixed 40 & Over 7.0 SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A →2026 Mixed 55 & Over 6.0

USTA3.00

2026

30 matches

Jan · 2.57

Mar · 2.81

Sep 19 · Doubles+0.06

W K. Stewart / A. Law

6-3,6-2 · 2D · with David Taylor

● Won ● Lost · Select a point to see that match.Your whole season is recalculated every night, so earlier points can shift as new results come in.

Current season

30 matches

Published NorCal results in 2026 — 9 scoring, 21 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 19, 2026 · Doubles · 2D · Mixed

Won 6-3,6-2

+0.06

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

David Taylor(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CM6.5A-DT

3.11

Opponents

Kim StewartCurrently on CUPERTINO TC/CUPERTINO SC 55MX6.0A

2.38

Albert LawCurrently on CUPERTINO TC/CUPERTINO SC CM7.5B

3.24

Mixed rating 3.25 → 3.31Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Sep 12, 2026 · Doubles · 3D · Mixed

Lost 2-6,4-6

−0.05

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Kumar Kandaswamy(partner)Currently on WALLENBERG PK CM7.5A

3.64

Opponents

Andrew HuangCurrently on SUNNYVALE MTC 40MX7.0F

4.21

Shawna BallardCurrently on BAY CLUB SANTA CLARA 55MX7.0A

3.42

Mixed rating 3.30 → 3.25Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Sep 12, 2026 · Doubles · 2D · Combo

Lost 0-6,1-6

−0.09

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Katie Diemer(partner)Currently on SAN JOSE SR CW6.5A

2.48

Opponents

Terry HuangCurrently on SUNNYVALE MTC CW6.5E

3.37

Yan HongCurrently on SUNNYVALE MTC CW6.5E

2.81

Combo rating 2.87 → 2.78Doubles result

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

Sep 6, 2026 · Doubles · 1D · Mixed

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

+0.16

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

John Pattinson(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.54

Opponents

Karen ChenCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX6.0B

3.53

Derek ChenCurrently on CUPERTINO TC/CUPERTINO SC CM7.5C

3.66

Mixed rating 3.14 → 3.30Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Sep 5, 2026 · Doubles · 2D · Mixed

Won 6-4,6-2

+0.01

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Michel Schreurs(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A

3.05

Opponents

June LiCurrently on CUPERTINO TC/CUPERTINO SC CW6.5A-DT

2.53

Venkata UppuluriCurrently on CUPERTINO TC/CUPERTINO SC CM6.5B-DT

2.57

Mixed rating 3.13 → 3.14Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Sep 2, 2026 · Doubles · 1D · Combo

Lost 4-6,6-7

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Jane Ensor(partner)Currently on SAN JOSE SR CW7.5A

3.43

Opponents

Karen ChenCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX6.0B

3.36

Kelly ChenCurrently on CUPERTINO TC/CUPERTINO SC CW6.5A

3.23

Combo rating 2.90 → 2.87Doubles result

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

Aug 29, 2026 · Doubles · 1D · Mixed

Won 6-3,6-2

+0.12

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Kumar Kandaswamy(partner)Currently on WALLENBERG PK CM7.5A

3.64

Opponents

Nathan WalkerCurrently on UNIVERSITY CLUB PA CM7.5A

3.71

Caroline BowersCurrently on UNIVERSITY CLUB PA 55MX7.0A

2.80

Mixed rating 3.01 → 3.13Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Aug 29, 2026 · Doubles · 3D · Combo

Lost 2-6,2-6

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Mary Jo Lee(partner)Currently on SAN JOSE SR CW7.5A

3.27

Opponents

Xiaocen ShanCurrently on SUNNYVALE MTC CW6.5D

3.29

Caimei LeiCurrently on SUNNYVALE MTC CW6.5D

3.47

Combo rating 2.93 → 2.90Doubles result

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

Aug 16, 2026 · Doubles · 3D · Mixed

Won 6-2,6-2

+0.09

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Kumar Kandaswamy(partner)Currently on WALLENBERG PK CM7.5A

3.64

Opponents

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

3.02

Jenny HubbertCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C 55MX7.0A

3.04

Mixed rating 2.92 → 3.01Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Jul 23, 2026 · Doubles · Mixed

Lost 5-7,1-6

−0.06

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Kumar Kandaswamy(partner)Currently on WALLENBERG PK CM7.5A

3.64

Opponents

Catherine CaouetteCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX7.0B

3.60

Elton LinCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX7.0B

3.72

Mixed rating 2.98 → 2.92Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Jul 19, 2026 · Doubles · Mixed

Won 6-1,7-5

+0.22

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Ryan Low(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CM7.5C

4.24

Opponents

Jun QianCurrently on SUNNYVALE TC/SUNNYVALE MTC CM6.5A

3.62

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

3.45

Mixed rating 2.76 → 2.98Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

Jun 21, 2026 · Doubles · Mixed

Won 6-2,3-6,1-0

+0.15

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.31

Kumar Kandaswamy(partner)Currently on WALLENBERG PK CM7.5A

3.64

Opponents

Derek ChenCurrently on CUPERTINO TC/CUPERTINO SC CM7.5C

3.66

Molly NamCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK 40MX7.0A

3.22

Mixed rating 2.60 → 2.76Doubles result

Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.

May 17, 2026 · Doubles · Combo

Lost 3-6,1-6

−0.02

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Janet Arsenault(partner)Currently on SAN JOSE SR CW7.5A

3.06

Opponents

Michelle BlakeCurrently on FOOTHILLS TandS CW6.5A-DT

3.13

Abbie SerranoCurrently on MORGAN HILL TC/MORGAN HILL TC CW7.5A-DT

3.83

Combo rating 2.95 → 2.93Doubles result

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

May 16, 2026 · Doubles · Combo

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

+0.14

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Sheila Hutchinson(partner)Currently on SAN JOSE SR CW6.5A

3.17

Opponents

Sylvia ThompsonCurrently on UNIVERSITY CLUB PA 55MX7.0A

3.16

Dale LachtmanCurrently on ALPINE HILLS CW6.5A-DT

2.78

Combo rating 2.81 → 2.95Doubles result

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

May 15, 2026 · Doubles · Combo

Lost 0-6,4-6

−0.04

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Claudia Parker(partner)Currently on LOS GATOS SR S70W7.0A

2.81

Opponents

Irene NishimotoCurrently on LOS GATOS SR S70W8.0A

3.20

Wendy KawamotoCurrently on CUPERTINO TC/CUPERTINO SC CW7.5A

3.14

Combo rating 2.85 → 2.81Doubles result

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

Apr 26, 2026 · Doubles · Combo

Lost 6-7,6-2,0-1

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Jeanne Oxford(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C 55MX7.0A

2.70

Opponents

Sylvia PetersonCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A

3.33

Wendy McdowellCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5B-DT

3.12

Combo rating 2.88 → 2.85Doubles result

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

Apr 25, 2026 · Doubles · Combo

Won 6-0,6-1

+0.26

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Lara Norman-stowers(partner)Currently on SAN JOSE SR CW7.5A

3.50

Opponents

Lisa BaumertCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.32

Kristi ErpenbeckCurrently on LOS GATOS SR CW7.5B

3.25

Combo rating 2.63 → 2.88Doubles result

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

Apr 19, 2026 · Doubles · Combo

Lost 4-6,4-6

−0.06

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Leticia Lafosse(partner)

2.82

Opponents

Julie JohnsonCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A

3.46

Michelle SarmentaCurrently on ALMADEN VAC CW6.5A

2.74

Combo rating 2.69 → 2.63Doubles result

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

Apr 4, 2026 · Doubles · Combo

Lost 2-6,5-7

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Sheila Hutchinson(partner)Currently on SAN JOSE SR CW6.5A

3.17

Opponents

Amy Si DouCurrently on CUPERTINO TC/CUPERTINO SC CW6.5A

3.34

Kelly ChenCurrently on CUPERTINO TC/CUPERTINO SC CW6.5A

3.23

Combo rating 2.79 → 2.76Doubles result

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

Apr 4, 2026 · Doubles · Combo

Lost 3 RE-5

−0.07

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Nancy Andersen(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C 55MX7.0A

2.77

Opponents

Mary Beth HueyCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK CW6.5A-DT

2.95

Kim BespalyCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX6.0B

3.04

Combo rating 2.76 → 2.69Doubles result

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

Mar 22, 2026 · Doubles · Combo

Lost 6-2,6-7,0-1

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.78

Mary Jo Lee(partner)Currently on SAN JOSE SR CW7.5A

3.27

Opponents

Michelle DikeCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5C

3.32

Sylvia PetersonCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX6.0A

3.33

Combo rating 2.81 → 2.79Doubles result

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

Mar 15, 2026 · Doubles

Won 1-0 RE

+0.20

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Jenny Hubbert(partner)Currently on SANTA CLARA TC/SANTA CLARA TENNIS C 55MX7.0A

2.85

Opponents

Cynthia JamesCurrently on FREMONT TC CW7.5A

3.11

Donna Jazayeri

3.25

Rating 2.61 → 2.81Doubles result

Mar 7, 2026 · Doubles

Lost 4-6,2-6

−0.15

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Leslie Johnson(partner)Currently on BAY CLUB COURTSIDE 55MX6.0B

2.63

Opponents

Pam Siu

2.80

Manchula Navaratnam

2.77

Rating 2.76 → 2.61Doubles result

Mar 3, 2026 · Doubles

Lost 5-7,1-6

−0.03

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Sheila Hutchinson(partner)Currently on SAN JOSE SR CW6.5A

2.68

Opponents

Youjin KimCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW6.5A-DT

3.17

Hwayeon ParkCurrently on SUNNYVALE MTC CW7.5D-DT

3.35

Rating 2.79 → 2.76Doubles result

Jan 24, 2026 · Doubles

Lost 6-7,2-6

−0.07

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Sheila Hutchinson(partner)Currently on SAN JOSE SR CW6.5A

2.68

Opponents

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

3.14

Dinh VailCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5B-DT

3.02

Rating 2.86 → 2.79Doubles result

Jan 23, 2026 · Doubles

Won 6-4,6-4

+0.20

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Janet Arsenault(partner)Currently on SAN JOSE SR CW7.5A

3.33

Opponents

Donna Jazayeri

3.25

Dinh VailCurrently on SUNNYVALE TC/SUNNYVALE MTC CW7.5B-DT

3.02

Rating 2.66 → 2.86Doubles result

Jan 18, 2026 · Doubles

Lost 0-6,0-6

−0.02

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Amanda Ramos(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.69

Opponents

Lisa BaumertCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.24

Kerry LoftusCurrently on UNIVERSITY CLUB PA CW7.5A-DT

3.28

Rating 2.68 → 2.66Doubles result

Jan 12, 2026 · Doubles

Lost 2-6,1-6

−0.02

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Lisa Baumert(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.24

Opponents

Viviane BahiaCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX7.0D

3.47

Mei LinCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT

3.25

Rating 2.70 → 2.68Doubles result

Jan 10, 2026 · Singles

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

−0.13

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Opponents

Sandra BallestrasseCurrently on MORGAN HILL TC/MORGAN HILL TC 55MX6.0A

2.91

Rating 2.83 → 2.70Singles result

Jan 8, 2026 · Doubles

Won 6-4,6-2

+0.25

Katharine’s side

Katharine HeintzCurrently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

2.81

Lisa Baumert(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC 55MX7.0A

3.24

Opponents

Elaine ChiuCurrently on SILVER CREEK CW6.5A-DT

3.04

Chris TomomatsuCurrently on FOSTER CITY TC/EDGEWATER PK S70W7.0A

3.47

Rating 2.57 → 2.83Doubles result

Best match

+0.25

Jan 8 vs E. Chiu / C. Tomomatsu

Worst match

−0.15

Mar 7 vs P. Siu / M. Navaratnam

▲

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 Sep 20

Katharine Heintz’s MatchPoint NorCal tennis rating is 2.81, an independent estimate based on published NorCal league results through September 20, 2026. They are currently rostered on 4 active NorCal league teams.

MatchPoint ratings are estimates based on published USTA NorCal league results. Data through September 20, 2026.

Year-end re-anchoring

Pulled toward the 2024 year-end level+0.002.79

Pulled toward the 2025 year-end level+0.032.57

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