MatchPoint

Player profile

William Chamberlin: estimated dynamic rating

William Chamberlin
USTA4.0
Rafael RC
4.15
Estimated dynamic rating
▼ −0.29 this season
Is this you?Track your rating after each match, plus your teams' standings and playoff chances.This is me ›
Combo · 2026
1 match
4.174.134.10
Aug · 4.17
Aug · 4.10
Aug 29 · Doubles−0.06
L B. Arbios / T. Kincaid
4-6,2-6 · 2D · with Jason Bousquet
Your combo rating, from combo matches only. It doesn’t move your 4.15.● 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

26 matches

Published NorCal results in 2026 — 15 scoring, 11 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Aug 29, 2026 · Doubles · 2D · Combo

Lost 4-6,2-6
−0.06

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
4.10
Jason Bousquet(partner)Currently on RAFAEL RC CM8.5A
4.09

Opponents

Bryan ArbiosCurrently on ROHNERT PK TC/MAGNOLIA/M PK CM8.5A
4.42
Tom KincaidCurrently on ROHNERT PK TC/MAGNOLIA/M PK CM8.5A
4.54
Combo rating 4.17 → 4.10Doubles result

Aug 14, 2026 · Doubles · 1D · Mixed

Lost 4-6,6-7
−0.10

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
3.99
Sharon Klein(partner)Currently on RAFAEL RC CW8.5A
3.78

Opponents

Joe GulashCurrently on SCOTT VALLEY CM7.5A
4.17
Laura SpenceCurrently on SCOTT VALLEY CW8.5A
4.01
Mixed rating 4.08 → 3.99Doubles result

Jul 12, 2026 · Doubles · Mixed

Won 6-7,6-3,1-0
+0.05

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
3.99
Sharon Klein(partner)Currently on RAFAEL RC CW8.5A
3.78

Opponents

Alima ConnanCurrently on CANON S and TC 55MX7.0A
3.35
Zach HancockCurrently on NOVATO TC/PIONEER PK CM7.5A
3.93
Mixed rating 4.03 → 4.08Doubles result

Jun 21, 2026 · Doubles · Mixed

Lost 6-7,3-6
−0.13

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
3.99
Eileen Benson(partner)Currently on RAFAEL RC CW8.5A
3.88

Opponents

Josh JaffeCurrently on BAY CLUB SF TENNIS CM7.5A
3.93
Erika LamarchCurrently on ROLLING HILLS CW7.5A-DT
4.19
Mixed rating 4.21 → 4.08Doubles result

Jun 20, 2026 · Doubles · Mixed

Won 3-6,6-2,1-0
+0.03

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
3.99
Patty Beach(partner)Currently on RAFAEL RC CW6.5A-DT
3.18

Opponents

Jerry LabayCurrently on SCOTT VALLEY CM7.5A
3.60
Sharon McdanielCurrently on SCOTT VALLEY CW7.5A-DT
3.51
Mixed rating 4.18 → 4.21Doubles result

May 16, 2026 · Doubles

Won 1-6,6-2,1-0
+0.13

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
4.15
Michael Grady(partner)Currently on RAFAEL RC CM8.5A
4.31

Opponents

Andrew HuangCurrently on RINCONADA PK CM7.5A
4.12
Ryan LowCurrently on SUNNYVALE TC/SUNNYVALE MTC CM7.5C
4.22
Rating 4.14 → 4.27Doubles result

May 15, 2026 · Doubles

Won 6-4,6-3
+0.12

William’s side

William ChamberlinCurrently on RAFAEL RC CM8.5A
4.15
Michael Grady(partner)Currently on RAFAEL RC CM8.5A
4.31

Opponents

Dan GullionCurrently on WALNUT CREEK RC/Walnut Creek TC CM8.5B
4.07
Rodney WadeCurrently on BAY CLUB SANTA CLARA CM8.5A
4.01
Rating 4.15 → 4.27Doubles result

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

Best match
−0.06
Aug 29 vs B. Arbios / T. Kincaid
Worst match
−0.06
Aug 29 vs B. Arbios / T. Kincaid
Where you started ›4.44
2022 year-end NTRP 4.54.30
Scale calibration+0.14
Season start4.44
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+0.104.54
Pulled toward the 2025 year-end level+0.154.05

More about William

William Chamberlin is a USTA NorCal 4.0 in 2026, down from 4.5 in 2025. The estimated dynamic rating is 4.15, down 0.29 this season, with a 15–11 record in 2026 across regular, combo and mixed play. Most frequent partner: Sharon Klein, 5–2 in 7 matches together.

Record

15–11
2026 season, 26 matches
11–18
2025 season, 29 matches
3
Longest winning streak
9–7
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, 2015–2026

3.5 in 2015, 4.0 from 2016 to 2019, 4.5 from 2021 to 2022, 4.5 in 2025 and 4.0 in 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, William?

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