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Colleen Sonneborn: estimated dynamic rating

Colleen Sonneborn
USTA3.5
Boyle PK
3.50
Estimated dynamic rating
▲ +0.71 this season
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Combo · 2026
14 matches
3.653.333.00
Aug · 3.05
Nov · 3.65
Nov 1 · Doubles+0.16
W L. Eastlack / M. Malone
7-5,6-1 · 1D · with Maggie Oros
Your combo rating, from combo matches only. It doesn’t move your 3.50.● 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

53 matches

Published NorCal results in 2026 — 31 scoring, 22 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Nov 1, 2026 · Doubles · 1D · Combo

Won 7-5,6-1
+0.16

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Maggie Oros(partner)Currently on MARIN CC CW8.5A
4.09

Opponents

Lisa EastlackCurrently on MARIN TC CW8.5A
4.21
Molie MaloneCurrently on MARIN TC CW7.5A
3.44
Combo rating 3.49 → 3.65Doubles result

Oct 19, 2026 · Doubles · 1D · Combo

Lost 1-6,5-7
−0.03

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Lynn Graham(partner)Currently on SCOTT VALLEY CW8.5A
3.66

Opponents

Ally GwozdzCurrently on WALNUT CREEK RC/Walnut Creek TC CW8.5A
4.23
Jennifer TetrickCurrently on ROLLING HILLS CW7.5A-DT
3.95
Combo rating 3.50 → 3.47Doubles result

Oct 17, 2026 · Doubles · 1D · Combo

Won 6-2,7-6
+0.04

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Alison Fisker(partner)Currently on BOYLE PK CW6.5A
3.42

Opponents

Rona SpiegelCurrently on CANON S and TC 55MX7.0A
3.12
Leah MattoCurrently on BAY CLUB ROSS VALLEY CW6.5A-DT
3.43
Combo rating 3.46 → 3.50Doubles result

Oct 8, 2026 · Doubles · 1D · Combo

Lost 1-6,0-6
−0.03

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Lucia Wallace(partner)Currently on PETALUMA TA/CASA GRANDE HS CW8.5A
3.85

Opponents

Winnie TsoCurrently on ROLLING HILLS CW7.5A-DT
3.92
Maddie ThomasCurrently on WALNUT CREEK RC/Walnut Creek TC CW8.5A
4.31
Combo rating 3.31 → 3.27Doubles result

Sep 26, 2026 · Doubles · 1D · Combo

Won 7-5,6-1
+0.05

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Maeve Walsh(partner)Currently on BOYLE PK CW6.5A
3.22

Opponents

Mallary WalkerCurrently on MILL VALLEY CW7.5A
3.29
Beth SafritCurrently on MILL VALLEY CW7.5A
3.09
Combo rating 3.26 → 3.31Doubles result

Sep 8, 2026 · Doubles · 2D · Combo

Lost 2-6,6-1,0-1
−0.07

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Lisa Faber(partner)Currently on CALIFORNIA TC CW7.5A
3.70

Opponents

Jane F YoungCurrently on TIBURON PEN C CW7.5A-DT
3.66
Sara SingermanCurrently on TIBURON PEN C CW7.5A-DT
3.64
Combo rating 3.07 → 3.00Doubles result

Sep 1, 2026 · Doubles · 2D · Combo

Lost 6-3,3-6,0-1
−0.05

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Lucia Wallace(partner)Currently on PETALUMA TA/CASA GRANDE HS CW8.5A
3.85

Opponents

Laura SpenceCurrently on SCOTT VALLEY CW8.5A
3.90
Julia Wilhelm KazulCurrently on SCOTT VALLEY CW7.5A-DT
3.82
Combo rating 3.13 → 3.07Doubles result

Aug 31, 2026 · Doubles · 2D · Combo

Won 6-0,6-0
+0.08

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.65
Lisa Faber(partner)Currently on CALIFORNIA TC CW7.5A
3.70

Opponents

Marion MckeeCurrently on MLK CW7.5A-DT
3.08
Andrea SimoneCurrently on MLK CW7.5A-DT
2.92
Combo rating 3.05 → 3.13Doubles result

Aug 15, 2026 · Doubles · 1D · Mixed

Lost 3-6,6-3,0-1
−0.09

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.62
Gan Tam(partner)Currently on PETALUMA TA/CASA GRANDE HS 55MX7.0A
3.61

Opponents

Scott KeyCurrently on MT TAM RC CM7.5A
4.14
Judy SchwerCurrently on MT TAM RC 55MX7.0A
3.47
Mixed rating 3.72 → 3.62Doubles result

Jun 28, 2026 · Doubles · Mixed

Won 6-3,3-6,1-0
+0.10

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.62
Zach Hancock(partner)Currently on NOVATO TC/PIONEER PK CM7.5A
3.93

Opponents

Jerry LabayCurrently on SCOTT VALLEY CM7.5A
3.60
Kimberly HobsonCurrently on SCOTT VALLEY CW7.5A
3.39
Mixed rating 3.24 → 3.34Doubles result

Jun 5, 2026 · Singles

Lost 1-6,6-2,0-1
−0.18

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50

Opponents

Stefanie WeinsteinCurrently on BAY CLUB ROSS VALLEY CW6.5A-DT
3.11
Rating 3.21 → 3.02Singles result

May 11, 2026 · Singles

Won 2-6,6-1,1-0
+0.14

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50

Opponents

Lucie PowersCurrently on ROLLING HILLS CW7.5A-DT
3.49
Rating 3.18 → 3.32Singles result

Mar 23, 2026 · Doubles

Lost 2-6,2-6
−0.16

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Stacy AchuckCurrently on REDWOOD HS CW7.5A
3.32
Pamela BohnerCurrently on REDWOOD HS CW7.5A
3.42
Rating 3.21 → 3.05Doubles result

Mar 22, 2026 · Doubles

Lost 4-6,1-6
−0.10

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT
3.78
Yue XuCurrently on SUNNYVALE MTC CW6.5D
3.73
Rating 3.31 → 3.21Doubles result

Mar 21, 2026 · Doubles

Won 6-4,6-3
+0.09

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Hazel IndickCurrently on WILLOW PASS PK CW7.5A
3.39
Alicia BarcoCurrently on WALNUT CREEK RC/Walnut Creek TC 55MX7.0B
3.39
Rating 3.22 → 3.31Doubles result

Mar 20, 2026 · Doubles

Won 6-3,6-1
+0.07

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Jane LilesCurrently on DIAMOND HILLS 55MX7.0A
3.19
Tracie CacciatoreCurrently on DIAMOND HILLS CW6.5A
3.28
Rating 3.15 → 3.22Doubles result

Mar 11, 2026 · Doubles

Won 1-6,6-2,1-0
+0.09

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Kimberly HobsonCurrently on SCOTT VALLEY CW7.5A
3.33
Ashley MacdonaldCurrently on SCOTT VALLEY CW7.5A-DT
3.57
Rating 3.19 → 3.28Doubles result

Feb 27, 2026 · Doubles

Won 6-4,6-0
+0.06

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Abby HoffmanCurrently on TIBURON PEN C CW7.5A
3.17
Kim Barron
3.19
Rating 3.13 → 3.19Doubles result

Feb 3, 2026 · Doubles

Lost 5-7,7-5,0-1
−0.16

Colleen’s side

Colleen SonnebornCurrently on BOYLE PK CW7.5A-DT
3.50
Nina Kim(partner)Currently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.36

Opponents

Thalia MilanoCurrently on MARIN CC CW7.5A
3.31
Alaina ThompsonCurrently on ROLLING HILLS CW7.5A-DT
3.29
Rating 3.22 → 3.06Doubles result

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

Best match
+0.19
Sep 13 vs M. Scheeline / A. Wlassowsky
Worst match
−0.07
Sep 8 vs J. Young / S. Singerman
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 Nov 4
Year-end re-anchoring
Pulled toward the 2024 year-end level−0.022.77
Pulled toward the 2025 year-end level−0.032.82

More about Colleen

Colleen Sonneborn has been a USTA NorCal 3.5 since 2024, after starting at 3.0 in 2017. The estimated dynamic rating is 3.50, up 0.71 this season, with a 35–18 record in 2026 across regular, combo and mixed play. Most frequent partner: Nina Kim, 13–10 in 23 matches together.

Record

35–18
2026 season, 53 matches
28–24
2025 season, 52 matches
5
Longest winning streak
17–18
Matches that went to a third set or match tiebreak

Partners

Best wins

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

Year-end NTRP, 2017–2026

3.0 from 2017 to 2018, 3.0 from 2022 to 2023 and 3.5 from 2024 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.

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