Colleen Sonneborn · NorCal tennis rating

MatchPoint

Player profile

Colleen Sonneborn

USTA 3.5 · NorCal league player

3.49

current

▲ +0.70 this season

Other formats · don’t affect your rating above

Combo 3.46Mixed 3.61

Active teams · 5

BOYLE PK CW6.5A →2026 Combo Womens League 6.5 BOYLE PK CW7.5A →2026 Combo Womens League 7.5 BOYLE PK CW7.5A-DT →2026 Combo Womens Daytime League 7.5

USTA3.50

2026

44 matches

Jan · 2.87

Jun · 3.49

Sep 13 · Doubles+0.19

W M. Scheeline / A. Wlassowsky

6-2,6-4 · 2D · with Maria Osorio

● 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

44 matches

Published NorCal results in 2026 — 31 scoring, 13 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 13, 2026 · Doubles · 2D · Combo

Won 6-2,6-4

+0.19

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.46

Maria Osorio(partner)Currently on BOYLE PK CW7.5A

3.86

Opponents

Melissa ScheelineCurrently on BAY CLUB ROSS VALLEY CW7.5A

3.72

Alexandra WlassowskyCurrently on ROLLING HILLS CW7.5A-DT

3.44

Combo rating 3.27 → 3.46Doubles result

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

Sep 12, 2026 · Doubles · 2D · Combo

Won 6-1,6-0

+0.04

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.46

Alison Fisker(partner)Currently on MT TAM RC 40MX7.0A

3.41

Opponents

Susan ChangCurrently on HARBOR PT CW6.5A

2.91

Connie OclassenCurrently on HARBOR PT CW6.5A

2.81

Combo rating 3.23 → 3.27Doubles result

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

Sep 8, 2026 · Doubles · 2D · Combo

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

−0.06

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.46

Lisa Faber(partner)Currently on CALIFORNIA TC CW7.5A

3.78

Opponents

Jane F YoungCurrently on TIBURON PEN C CW7.5A-DT

3.55

Sara SingermanCurrently on TIBURON PEN C CW7.5A-DT

3.60

Combo rating 3.29 → 3.23Doubles result

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

Sep 1, 2026 · Doubles · 2D · Combo

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

−0.05

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.46

Lucia Wallace(partner)Currently on PETALUMA TA/CASA GRANDE HS CW8.5A

3.64

Opponents

Laura SpenceCurrently on SCOTT VALLEY CW8.5A

3.93

Julia Wilhelm KazulCurrently on SCOTT VALLEY CW7.5A-DT

3.71

Combo rating 3.33 → 3.29Doubles result

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

Aug 31, 2026 · Doubles · 2D · Combo

Won 6-0,6-0

+0.09

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.46

Lisa Faber(partner)Currently on CALIFORNIA TC CW7.5A

3.78

Opponents

Marion MckeeCurrently on MLK CW7.5A-DT

3.06

Andrea SimoneCurrently on MLK CW7.5A-DT

3.04

Combo rating 3.24 → 3.33Doubles result

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

Aug 15, 2026 · Doubles · 1D · Mixed

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

−0.10

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Gan Tam(partner)Currently on PETALUMA TA/CASA GRANDE HS 55MX7.0A

3.59

Opponents

Scott KeyCurrently on MT TAM RC CM7.5A

4.13

Judy SchwerCurrently on MT TAM RC 55MX7.0A

3.33

Mixed rating 3.71 → 3.61Doubles result

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

Aug 6, 2026 · Doubles · Mixed

Won 6-1,6-0

+0.07

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Bruno Luiz Ley Santos(partner)Currently on ROHNERT PK TC/MAGNOLIA/M PK CM7.5A

3.58

Opponents

Dan EtcheversCurrently on TIBURON PEN C CM7.5A

3.59

Jessica EtcheversCurrently on TIBURON PEN C CW6.5A

2.75

Mixed rating 3.64 → 3.71Doubles result

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

Jul 15, 2026 · Doubles · Mixed

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

−0.06

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Bruno Luiz Ley Santos(partner)Currently on ROHNERT PK TC/MAGNOLIA/M PK CM7.5A

3.58

Opponents

Karen LoebbakaCurrently on MARIN TC CW7.5A

3.64

Christopher BrawerCurrently on MARIN TC CM8.5A

4.14

Mixed rating 3.70 → 3.64Doubles result

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

Jul 12, 2026 · Doubles · Mixed

Won 6-4,7-6

+0.17

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Bruno Luiz Ley Santos(partner)Currently on ROHNERT PK TC/MAGNOLIA/M PK CM7.5A

3.58

Opponents

Chris BeardCurrently on RAFAEL RC CM7.5A

3.54

Erin ChamberlinCurrently on RAFAEL RC CW8.5A

3.96

Mixed rating 3.53 → 3.70Doubles result

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

Jul 11, 2026 · Doubles · Mixed

Won 6-4,7-5

+0.21

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Gustavo Evangelista(partner)Currently on NOVATO TC/PIONEER PK CM7.5A

3.54

Opponents

Paolo PetroneCurrently on HARBOR PT 55MX8.0A

3.62

Freda O'brienCurrently on HARBOR PT 55MX8.0A

3.89

Mixed rating 3.33 → 3.53Doubles result

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

Jun 28, 2026 · Doubles · Mixed

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

+0.10

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Zach Hancock(partner)Currently on NOVATO TC/PIONEER PK CM7.5A

3.93

Opponents

Jerry LabayCurrently on SCOTT VALLEY CM7.5A

3.58

Kimberly HobsonCurrently on SCOTT VALLEY CW7.5A

3.39

Mixed rating 3.23 → 3.33Doubles result

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

Jun 20, 2026 · Doubles · Mixed

Lost 6-4,3-6,0-1

−0.12

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Dino Tomelden(partner)Currently on NOVATO TC/PIONEER PK 40MX7.0A

3.15

Opponents

Dan EtcheversCurrently on TIBURON PEN C CM7.5A

3.59

Jessica EtcheversCurrently on TIBURON PEN C CW6.5A

2.75

Mixed rating 3.35 → 3.23Doubles result

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

Jun 14, 2026 · Doubles · Mixed

Lost 0-6,2-6

−0.09

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.61

Gustavo Evangelista(partner)Currently on NOVATO TC/PIONEER PK CM7.5A

3.54

Opponents

Jason CampCurrently on RAFAEL RC 55MX8.0A

3.68

Katherine MatsoCurrently on MT TAM RC CW7.5A

3.89

Mixed rating 3.44 → 3.35Doubles result

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

Jun 13, 2026 · Doubles

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

+0.16

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Andrea Pierce(partner)Currently on ROLLING HILLS 40MX8.0A

3.54

Opponents

Kelly Krill

3.66

Serene LaiCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5B-DT

3.93

Rating 3.30 → 3.45Doubles result

Jun 13, 2026 · Doubles

Won 7-6,6-4

+0.04

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Karolina Gachowska(partner)Currently on BOYLE PK CW7.5A-DT

3.56

Opponents

Elizabeth DuffCurrently on TIBURON PEN C CW7.5A-DT

3.16

Susan TerrellCurrently on TIBURON PEN C CW7.5A

3.35

Rating 3.45 → 3.49Doubles result

Jun 9, 2026 · Doubles

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

−0.13

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Janie Friend

3.19

Katie SpaldingCurrently on BELVEDERE TC CW7.5A

3.86

Rating 3.42 → 3.30Doubles result

Jun 7, 2026 · Doubles

Won 6-3,6-1

+0.10

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Tori Herzog(partner)Currently on BOYLE PK CW7.5A-DT

3.44

Opponents

Amy AlvaradoCurrently on REDWOOD HS CW7.5A

3.50

Pamela BohnerCurrently on REDWOOD HS CW7.5A

3.40

Rating 3.32 → 3.42Doubles result

Jun 6, 2026 · Doubles

Won 6-0,7-5

+0.24

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Andrea Pierce(partner)Currently on ROLLING HILLS 40MX8.0A

3.54

Opponents

Martina HamamjianCurrently on MARIN TC CW8.5A

3.95

Merilee BordinCurrently on MARIN TC CW8.5A

3.98

Rating 3.07 → 3.32Doubles result

Jun 5, 2026 · Singles

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

−0.20

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Opponents

Stefanie WeinsteinCurrently on BAY CLUB ROSS VALLEY CW6.5A-DT

3.04

Rating 3.27 → 3.07Singles result

Jun 1, 2026 · Doubles

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

−0.13

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Tori Herzog(partner)Currently on BOYLE PK CW7.5A-DT

3.44

Opponents

Stacy AchuckCurrently on TIBURON PEN C 40MX8.0A

3.30

Sara SingermanCurrently on TIBURON PEN C CW7.5A-DT

3.56

Rating 3.40 → 3.27Doubles result

May 21, 2026 · Doubles

Lost 0-6,5-7

−0.03

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Melinda Whitmore(partner)Currently on BOYLE PK CW7.5A-DT

3.34

Opponents

Elizabeth HarrellCurrently on SCOTT VALLEY CW8.5A

4.07

Laura SpenceCurrently on SCOTT VALLEY CW8.5A

4.04

Rating 3.43 → 3.40Doubles result

May 17, 2026 · Doubles

Won 6-4,6-2

+0.16

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Marilyn Papa(partner)Currently on BOYLE PK 40MX7.0A

3.35

Opponents

Urmila Bajpai-pillaiCurrently on MT TAM RC CW7.5A

3.55

Jennifer SchwartzCurrently on MT TAM RC CW7.5A

3.67

Rating 3.27 → 3.43Doubles result

May 16, 2026 · Doubles

Lost 5-7,6-7

−0.19

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Melinda Whitmore(partner)Currently on BOYLE PK CW7.5A-DT

3.34

Opponents

Jamie PapadimosCurrently on MARIN TC CW7.5A

3.17

Michelle VerloopCurrently on MARIN TC CW7.5A

3.34

Rating 3.45 → 3.27Doubles result

May 15, 2026 · Doubles

Won 6-2,6-4

+0.07

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Sara Crate(partner)Currently on TIBURON PEN C CW6.5A

3.41

Opponents

Alison DunnCurrently on MILL VALLEY CW7.5A

3.19

Libby MitchellCurrently on MILL VALLEY CW7.5A

3.32

Rating 3.39 → 3.45Doubles result

May 11, 2026 · Singles

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

+0.12

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Opponents

Lucie PowersCurrently on ROLLING HILLS CW7.5A-DT

3.45

Rating 3.26 → 3.39Singles result

May 9, 2026 · Doubles

Lost 1 RE-5

−0.06

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Carla Martin(partner)

3.66

Opponents

Jeri ObertCurrently on ROLLING HILLS CW7.5A

3.62

Mandy CampbellCurrently on ROLLING HILLS CW7.5A-DT

3.62

Rating 3.29 → 3.23Doubles result

May 9, 2026 · Doubles

Won 6-2,6-1

+0.04

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Stacey SilverCurrently on SCOTT VALLEY CW6.5A

2.89

Ellen TaylorCurrently on SCOTT VALLEY CW7.5A-DT

3.12

Rating 3.23 → 3.26Doubles result

May 4, 2026 · Doubles

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

+0.06

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Carolyn Tuatini(partner)Currently on BOYLE PK CW7.5A-DT

3.32

Opponents

Stephanie SadowCurrently on SCOTT VALLEY CW7.5A-DT

3.27

Susan MastersCurrently on SCOTT VALLEY CW7.5A-DT

3.34

Rating 3.23 → 3.29Doubles result

Apr 2, 2026 · Doubles

Won 6-1,6-4

+0.10

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Melinda Whitmore(partner)Currently on BOYLE PK CW7.5A-DT

3.34

Opponents

Kristine BantonCurrently on ROLLING HILLS CW6.5A

3.29

Karen LeechCurrently on ROLLING HILLS CW6.5A

3.30

Rating 3.13 → 3.23Doubles result

Mar 23, 2026 · Doubles

Lost 2-6,2-6

−0.17

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Stacy AchuckCurrently on TIBURON PEN C 40MX8.0A

3.30

Pamela BohnerCurrently on REDWOOD HS CW7.5A

3.40

Rating 3.30 → 3.13Doubles result

Mar 22, 2026 · Doubles

Lost 4-6,1-6

−0.10

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

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

3.79

Yue XuCurrently on SUNNYVALE MTC CW6.5D

3.73

Rating 3.40 → 3.30Doubles result

Mar 21, 2026 · Doubles

Won 6-4,6-3

+0.09

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Hazel IndickCurrently on WILLOW PASS PK CW7.5A

3.39

Alicia BarcoCurrently on WALNUT CREEK RC/Walnut Creek TC 55MX7.0B

3.38

Rating 3.31 → 3.40Doubles result

Mar 20, 2026 · Doubles

Won 6-3,6-1

+0.07

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Jane LilesCurrently on DIAMOND HILLS 55MX7.0A

3.22

Tracie CacciatoreCurrently on DIAMOND HILLS CW6.5A

3.38

Rating 3.24 → 3.31Doubles result

Mar 15, 2026 · Doubles

Won 6-2,6-2

+0.04

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Jessie SchroederCurrently on MT TAM RC 40MX7.0A

3.10

Judy SchwerCurrently on MT TAM RC 55MX7.0A

2.90

Rating 3.20 → 3.24Doubles result

Mar 12, 2026 · Doubles

Lost 6-7,5-7

−0.16

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Carolyn Tuatini(partner)Currently on BOYLE PK CW7.5A-DT

3.32

Opponents

Karen LoebbakaCurrently on MARIN TC CW7.5A

3.35

Brenda DorianCurrently on MARIN TC CW7.5A

3.41

Rating 3.37 → 3.20Doubles result

Mar 11, 2026 · Doubles

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

+0.09

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Kimberly HobsonCurrently on SCOTT VALLEY CW7.5A

3.32

Ashley MacdonaldCurrently on SCOTT VALLEY CW7.5A-DT

3.56

Rating 3.28 → 3.37Doubles result

Feb 27, 2026 · Doubles

Won 6-4,6-0

+0.07

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Abby HoffmanCurrently on TIBURON PEN C CW7.5A

3.16

Kim Barron

3.27

Rating 3.21 → 3.28Doubles result

Feb 21, 2026 · Doubles

Won 6-0,6-0

+0.02

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Nooshin Behroyan

2.84

Alix Fagersten

3.05

Rating 3.19 → 3.21Doubles result

Feb 7, 2026 · Doubles

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

+0.07

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nancy Tuhtan(partner)Currently on BOYLE PK CW6.5A

3.41

Opponents

Erin ShippeyCurrently on MARIN TC CW7.5A

3.30

Brenda DorianCurrently on MARIN TC CW7.5A

3.41

Rating 3.12 → 3.19Doubles result

Feb 3, 2026 · Doubles

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

−0.16

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT

3.35

Opponents

Thalia MilanoCurrently on MARIN CC CW7.5A

3.30

Alaina ThompsonCurrently on ROLLING HILLS CW7.5A-DT

3.26

Rating 3.28 → 3.12Doubles result

Feb 1, 2026 · Doubles

Won 6-4,6-2

+0.12

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nancy Tuhtan(partner)Currently on BOYLE PK CW6.5A

3.41

Opponents

Kristine BantonCurrently on ROLLING HILLS CW6.5A

3.29

Karen LeechCurrently on ROLLING HILLS CW6.5A

3.30

Rating 3.16 → 3.28Doubles result

Jan 28, 2026 · Doubles

Won 6-3,7-5

+0.12

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Nancy Tuhtan(partner)Currently on BOYLE PK CW6.5A

3.41

Opponents

Annabelle FranklCurrently on GOLDMAN TC CW6.5B-DT

3.55

Alisa StimsonCurrently on BELVEDERE TC CW7.5A

3.32

Rating 3.04 → 3.16Doubles result

Jan 19, 2026 · Doubles

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

+0.14

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Sarah FonkalsrudCurrently on RAFAEL RC CW7.5A

3.29

Amanda LaroccaCurrently on RAFAEL RC CW6.5A-DT

3.53

Rating 2.90 → 3.04Doubles result

Jan 10, 2026 · Doubles

Won 6-3,6-4

+0.04

Colleen’s side

Colleen SonnebornCurrently on NOVATO TC/PIONEER PK 40MX8.0A

3.49

Moira Gubbins(partner)Currently on CANON S and TC 55MX7.0A

3.13

Opponents

Robin InabaCurrently on MT TAM RC 55MX7.0A

2.98

Lisa EichlerCurrently on MT TAM RC 55MX7.0A

2.93

Rating 2.87 → 2.90Doubles result

Best match

+0.24

Jun 6 vs M. Hamamjian / M. Bordin

Worst match

−0.20

Jun 5 vs Stefanie Weinstein

Where you started ›2.79

2023 year-end NTRP 3.02.65

Scale calibration+0.14

Season start2.79

Your starting point comes from your official year-end NTRP, not from any third-party rating. The calibration is a fixed shift that puts our scale on the same level as NTRP.

▲

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

Colleen Sonneborn’s MatchPoint NorCal tennis rating is 3.49, an independent estimate based on published NorCal league results through September 20, 2026. They are currently rostered on 5 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−0.012.78

Pulled toward the 2025 year-end level−0.022.87

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Colleen Sonneborn’s NorCal tennis rating

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