MatchPoint

Player profile

Sonia Whitfield: estimated dynamic rating

Sonia Whitfield
USTA3.5
Bay Club Courtside
3.26
Estimated dynamic rating
▼ −0.08 this season
Is this you?Track your rating after each match, plus your teams' standings and playoff chances.This is me ›
Combo · 2026
4 matches
3.243.153.05
Aug · 3.24
Oct · 3.05
Oct 24 · Doubles−0.05
L C. Fronczak / S. An
1-6,1-6 · 1D · with Vonda Reid
Your combo rating, from combo matches only. It doesn’t move your 3.26.● 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

35 matches

Published NorCal results in 2026 — 13 scoring, 22 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Oct 24, 2026 · Doubles · 1D · Combo

Lost 1-6,1-6
−0.05

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.05
Vonda Reid(partner)Currently on VILLAGES GCC S70W7.0A
2.92

Opponents

Christine FronczakCurrently on BAY CLUB SANTA CLARA 55MX8.0A
3.55
Sehwa AnCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW6.5A-DT
3.37
Combo rating 3.10 → 3.05Doubles result

Oct 11, 2026 · Doubles · 1D · Combo

Lost 1-6,1-6
−0.01

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.05
Hilary Butler(partner)Currently on BAY CLUB COURTSIDE CW7.5B-DT
3.52

Opponents

Silvana GoldCurrently on GOLDEN GATEWY CW7.5B
4.06
Judy HsuCurrently on BAY CLUB SANTA CLARA CW7.5A
3.88
Combo rating 3.10 → 3.10Doubles result

Oct 4, 2026 · Doubles · 1D · Combo

Lost 3-6,3-6
−0.02

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.05
Joni Bartlett(partner)Currently on BAY CLUB COURTSIDE CW8.5B
3.53

Opponents

Rachel BanseCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.57
Tamara TarkingtonCurrently on SEASCAPE SC 55MX7.0A
3.67
Combo rating 3.12 → 3.10Doubles result

Aug 31, 2026 · Doubles · 2D · Combo

Lost 6-4,2-6,0-1
−0.12

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.05
Michelle Angel(partner)Currently on BAY CLUB COURTSIDE CW6.5A-DT
3.06

Opponents

Lori RuizCurrently on ALMADEN VAC CW7.5A
3.11
Michelle RotzinCurrently on ALMADEN VAC CW6.5A
3.19
Combo rating 3.24 → 3.12Doubles result

Jul 22, 2026 · Doubles · Mixed

Won 4-6,6-3,1-0
+0.05

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Tom Kent(partner)Currently on BAY CLUB COURTSIDE 55MX8.0A
3.95

Opponents

Unjin ChoiCurrently on BAY CLUB COURTSIDE CW7.5A
3.63
Dong-Young ChangCurrently on BAY CLUB COURTSIDE CM7.5A
3.66
Mixed rating 3.83 → 3.89Doubles result

Jun 30, 2026 · Doubles · Mixed

Won 5-7,6-3,1-0
+0.13

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Randy Becker(partner)Currently on UNIVERSITY CLUB PA 55MX9.0A
4.18

Opponents

Ellen HilbrichCurrently on LOS GATOS SR CW7.5B
3.90
Bryan RichterCurrently on LOS GATOS SR 55MX8.0A
3.98
Mixed rating 3.71 → 3.83Doubles result

Jun 12, 2026 · Doubles

Lost 6-7,2-6
−0.12

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26
Stacie Pittenger(partner)Currently on SILVER CREEK CW7.5A
3.31

Opponents

Runa KoizumiCurrently on SUNNYVALE TC/SUNNYVALE MTC CW6.5A-DT
3.78
Ko-Yun ChenCurrently on BRAMHALL PK CW7.5A
2.93
Rating 3.38 → 3.26Doubles result

May 26, 2026 · Doubles

Won 6-2,3-6,1-0
+0.07

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26
Denise Hall(partner)Currently on BAY CLUB COURTSIDE CW7.5B-DT
3.56

Opponents

Deena ElfarCurrently on BAY CLUB COURTSIDE CW7.5C
3.19
Gigi HarveyCurrently on BAY CLUB COURTSIDE CW7.5C
3.08
Rating 3.31 → 3.38Doubles result

May 9, 2026 · Singles

Won 2-6,6-2,1-0
+0.12

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26

Opponents

Kathy KellerCurrently on ALMADEN VAC CW6.5A
3.26
Rating 3.19 → 3.31Singles result

May 4, 2026 · Singles

Lost 6-7,0-6
−0.05

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26

Opponents

Elyse GoldmanCurrently on SAN JOSE SR CW7.5A
3.38
Rating 3.24 → 3.19Singles result

May 2, 2026 · Doubles

Lost 3-6,4-6
−0.10

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26
Katherine Sandell(partner)Currently on BAY CLUB COURTSIDE CW7.5A
3.35

Opponents

Mai PhamCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW7.5A
3.57
Anna AnCurrently on SUNNYVALE MTC CW6.5B
3.20
Rating 3.35 → 3.24Doubles result

Apr 30, 2026 · Singles

Lost 1-6,0-6
−0.02

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26

Opponents

Sydney PfaffCurrently on SEASCAPE SC CW8.5A
3.83
Rating 3.36 → 3.35Singles result

Apr 19, 2026 · Doubles

Won 6-3,6-3
+0.09

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26
Susan Onffroy(partner)Currently on BAY CLUB SANTA CLARA 55MX8.0A
3.18

Opponents

Ellie GholamiCurrently on LOS GATOS SR CW6.5A-DT
3.22
Julie SchwarzCurrently on LOS GATOS SR CW6.5A-DT
3.10
Rating 3.47 → 3.57Doubles result

Apr 2, 2026 · Singles

Won 6-1,6-2
+0.04

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26

Opponents

Mary Jo LeeCurrently on SAN JOSE SR CW7.5A
3.02
Rating 3.45 → 3.49Singles result

Mar 28, 2026 · Doubles · Mixed

Lost 5-7,6-2,0-1
−0.05

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Randy Becker(partner)Currently on UNIVERSITY CLUB PA 55MX9.0A
4.18

Opponents

Daniel LuCurrently on RINCONADA PK CM8.5B
4.51
Xindi XuCurrently on SUNNYVALE MTC CW6.5B
3.89
Mixed rating 3.76 → 3.70Doubles result

Mar 15, 2026 · Singles

Won 6-3,6-0
+0.04

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26

Opponents

Lana ChizhikCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW6.5A-DT
2.90
Rating 3.41 → 3.45Singles result

Mar 14, 2026 · Doubles · Mixed

Won 7-5,4-6,1-0
+0.12

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Sang Gyum Kim(partner)Currently on ALMADEN SR CM9.5A
4.28

Opponents

Guibin TianCurrently on SUNNYVALE MTC CM8.5A
4.17
Sandy YaoCurrently on FREMONT HILLS CC CW7.5A
3.81
Mixed rating 3.62 → 3.74Doubles result

Mar 1, 2026 · Doubles · Mixed

Won 6-1,6-4
+0.11

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Randy Becker(partner)Currently on UNIVERSITY CLUB PA 55MX9.0A
4.18

Opponents

Quynh LuuCurrently on BAY CLUB COURTSIDE CW7.5B-DT
3.55
Brooke Rahn
3.85
Mixed rating 3.50 → 3.61Doubles result

Feb 27, 2026 · Doubles

Won 6-4,6-4
+0.13

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.26
Inna Cantor(partner)Currently on BAY CLUB COURTSIDE CW6.5A
3.16

Opponents

Carol GiraudoCurrently on FOOTHILLS TandS CW6.5A-DT
3.10
Renee Cantu HillCurrently on BAY CLUB COURTSIDE CW7.5C
3.22
Rating 3.27 → 3.41Doubles result

Feb 22, 2026 · Doubles · Mixed

Won 6-2,6-1
+0.08

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Sang Gyum Kim(partner)Currently on ALMADEN SR CM9.5A
4.28

Opponents

Ziwei WangCurrently on FREMONT HILLS CC CW7.5A
3.27
Zheyu WangCurrently on SUNNYVALE MTC CM8.5A
3.74
Mixed rating 3.41 → 3.50Doubles result

Feb 21, 2026 · Doubles · Mixed

Lost 7-6,4-6,0-1
−0.03

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Marco Kraus(partner)Currently on FREMONT TC CM9.5A
4.57

Opponents

Haewon KwonCurrently on SANTA CLARA TC/SANTA CLARA TENNIS C CW6.5A-DT
4.11
Alex ZhouCurrently on GOLDMAN TC CM8.5A
4.40
Mixed rating 3.44 → 3.41Doubles result

Feb 14, 2026 · Doubles · Mixed

Won 6-3,3-6,1-0
+0.15

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Randy Becker(partner)Currently on UNIVERSITY CLUB PA 55MX9.0A
4.18

Opponents

Jeffrey HuangCurrently on PINEWOOD PK CM8.5A
4.14
Joany GaoCurrently on SUNNYVALE MTC CW8.5C
3.86
Mixed rating 3.50 → 3.65Doubles result

Jan 28, 2026 · Doubles · Mixed

Lost 3-6,1-6
−0.12

Sonia’s side

Sonia WhitfieldCurrently on BAY CLUB COURTSIDE CW7.5A
3.80
Ranjit Narayanan(partner)
4.11

Opponents

Ke LiuCurrently on SUNNYVALE MTC CW6.5D
3.69
Kevin MargoCurrently on BAY CLUB COURTSIDE CM9.5A
4.26
Mixed rating 3.59 → 3.47Doubles result

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

Best match
−0.01
Oct 11 vs S. Gold / J. Hsu
Worst match
−0.12
Aug 31 vs L. Ruiz / M. Rotzin
Where you started ›3.34
2023 year-end NTRP 3.53.20
Scale calibration+0.14
Season start3.34
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+0.033.37
Pulled toward the 2025 year-end level+0.043.27

More about Sonia

Sonia Whitfield has been a USTA NorCal 3.5 since 2021, after starting at 2.5 in 2019. The estimated dynamic rating is 3.26, down 0.08 this season, with a 19–16 record in 2026 across regular, combo and mixed play. Most frequent partner: Randy Becker, 5–2 in 7 matches together.

Record

19–16
2026 season, 35 matches
23–37
2025 season, 60 matches
7
Longest winning streak
16–18
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, 2019–2026

2.5 in 2019, 3.0 in 2020 and 3.5 from 2021 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, Sonia?

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