MatchPoint

Player profile

Joanna Brook’s NorCal tennis rating

Joanna Brook
USTA 3.5 · NorCal league player
3.28
current
▲ +0.49 this season

Other formats · don’t affect your rating above

Combo 3.14Mixed 3.51
USTA3.50
2026
32 matches
3.803.362.92
Jan · 3.50
May · 3.28
Sep 15 · Doubles−0.16
L A. Arost / S. Okubo
5-7,1-6 · 2D · with Karen Staats
● 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

32 matches

Published NorCal results in 2026 — 26 scoring, 6 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 15, 2026 · Doubles · 2D · Combo

Lost 5-7,1-6
−0.16

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.14
Karen Staats(partner)Currently on RAFAEL RC CW6.5A-DT
2.87

Opponents

Aimee ArostCurrently on PACIFICA TC/SKYLINE COLLEGE CW7.5A
3.21
Sarah OkuboCurrently on LANEY TA/MERVYN MORRIS PK CW6.5A
2.92
Combo rating 3.30 → 3.14Doubles result

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

Sep 10, 2026 · Doubles · 3D · Combo

Lost 5-7,3-6
−0.09

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.14
Brooke Perkins(partner)Currently on RAFAEL RC CW6.5A-DT
3.02

Opponents

Fariba MonsefiCurrently on MLK CW7.5A-DT
3.31
Leah MattoCurrently on BAY CLUB ROSS VALLEY CW6.5A-DT
3.29
Combo rating 3.39 → 3.30Doubles result

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

May 31, 2026 · Doubles

Won 7-6,7-5
+0.15

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Jamie Bartell(partner)Currently on RAFAEL RC CW7.5A
3.22

Opponents

Patricia SheedyCurrently on CALIFORNIA TC CW7.5A
3.52
Lauren FordCurrently on CALIFORNIA TC CW7.5A
3.26
Rating 3.14 → 3.28Doubles result

May 10, 2026 · Doubles

Lost 0-6,0-6
−0.05

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Ashley Hellyer(partner)Currently on RAFAEL RC CW7.5A
3.28

Opponents

Lisa BridgesCurrently on BAY CLUB ROSS VALLEY CW7.5A
3.53
Mandy CampbellCurrently on ROLLING HILLS CW7.5A-DT
3.62
Rating 3.39 → 3.34Doubles result

May 5, 2026 · Doubles

Lost 3-6,2-6
−0.17

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Ashley Hellyer(partner)Currently on RAFAEL RC CW7.5A
3.28

Opponents

Kasey QuonCurrently on OLYMPIC CW7.5A
3.16
Rachel QuonCurrently on OLYMPIC CW7.5A
3.49
Rating 3.56 → 3.39Doubles result

Apr 27, 2026 · Doubles

Won 6-2,6-4
+0.09

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Karen Staats(partner)Currently on RAFAEL RC CW6.5A-DT
2.84

Opponents

Moira GubbinsCurrently on CANON S and TC 55MX7.0A
3.13
Amelia WeirCurrently on GOLDMAN TC CW6.5C-DT
3.05
Rating 3.47 → 3.56Doubles result

Apr 18, 2026 · Doubles

Lost 2-6,3-6
−0.11

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Nhat Johnston(partner)Currently on RAFAEL RC CW7.5A
3.21

Opponents

Winnie TsoCurrently on ROLLING HILLS CW7.5A-DT
3.73
Pam DinevaCurrently on SAN CARLOS TC/ARGUELLO PK CW7.5A
3.51
Rating 3.65 → 3.55Doubles result

Mar 29, 2026 · Doubles · Mixed

Won 6-1,7-5
+0.21

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.51
Chris Jones(partner)Currently on RAFAEL RC CM7.5A
3.61

Opponents

Ryan MorrisonCurrently on GOLDEN GATEWY CM6.5A
3.71
Caroline BruisterCurrently on ROLLING HILLS 40MX8.0A
3.80
Mixed rating 3.31 → 3.51Doubles result

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

Mar 20, 2026 · Doubles

Won 6-4,2-0 RE
+0.23

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Ashley Hellyer(partner)Currently on RAFAEL RC CW7.5A
3.28

Opponents

Teresa MoyeCurrently on UNIVERSITY CLUB PA CW7.5A-DT
3.61
Michele WangCurrently on UNIVERSITY CLUB PA CW7.5A-DT
3.65
Rating 3.56 → 3.80Doubles result

Mar 20, 2026 · Doubles

Lost 6-7,3-6
−0.11

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Ashley Hellyer(partner)Currently on RAFAEL RC CW7.5A
3.28

Opponents

Christine MalloyCurrently on NAPA VALLEY TC/VINTAGE HS CW6.5B
3.52
Brie CadmanCurrently on NAPA VALLEY TC/VINTAGE HS CW6.5A
3.46
Rating 3.80 → 3.69Doubles result

Mar 15, 2026 · Doubles

Won 7-5,4-6,1-0
+0.13

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Ashley Hellyer(partner)Currently on RAFAEL RC CW7.5A
3.28

Opponents

Ellen TaylorCurrently on SCOTT VALLEY CW7.5A-DT
3.12
Mary ToddCurrently on SCOTT VALLEY CW8.5A
3.90
Rating 3.43 → 3.56Doubles result

Feb 21, 2026 · Doubles

Lost 6-7,4-6
−0.08

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Jamie Bartell(partner)Currently on RAFAEL RC CW7.5A
3.22

Opponents

Erin HenkeCurrently on ROLLING HILLS 40MX8.0A
3.45
Katie IvesCurrently on ROLLING HILLS CW7.5A-DT
3.42
Rating 2.99 → 2.92Doubles result

Feb 3, 2026 · Doubles · Mixed

Won 6-2,6-1
+0.09

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.51
Chris Jones(partner)Currently on RAFAEL RC CM7.5A
3.61

Opponents

Kelly DeckerCurrently on MARIN CC CW7.5A
3.53
Bruce KirstenCurrently on MARIN CC CM6.5A
2.99
Mixed rating 3.21 → 3.31Doubles result

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

Feb 1, 2026 · Doubles · Mixed

Won 7-5,7-6
+0.11

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.51
Stewart Clark(partner)Currently on RAFAEL RC CM7.5A
3.46

Opponents

Elliott MagnusonCurrently on MARIN TC CM7.5A
3.28
Katie MagnusonCurrently on MARIN TC CW7.5A
3.49
Mixed rating 3.10 → 3.21Doubles result

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

Jan 31, 2026 · Doubles

Lost 2-6,2-6
−0.11

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.28
Hanna Damiani(partner)Currently on RAFAEL RC 40MX7.0B
3.21

Opponents

Stacy AchuckCurrently on TIBURON PEN C 40MX8.0A
3.30
Sara SingermanCurrently on TIBURON PEN C CW7.5A-DT
3.56
Rating 3.19 → 3.08Doubles result

Jan 17, 2026 · Doubles · Mixed

Won 7-5,6-3
+0.11

Joanna’s side

Joanna BrookCurrently on RAFAEL RC CW6.5A-DT
3.51
Chris Jones(partner)Currently on RAFAEL RC CM7.5A
3.61

Opponents

Nina TrowbridgeCurrently on MT TAM RC CW7.5A
3.43
Kevin Cohou
3.37
Mixed rating 2.99 → 3.10Doubles result

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

Best match
+0.23
Mar 20 vs T. Moye / M. Wang
Worst match
−0.17
May 5 vs K. Quon / R. Quon
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

Joanna Brook’s MatchPoint NorCal tennis rating is 3.28, an independent estimate based on published NorCal league results through September 20, 2026. They are currently rostered on 2 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−0.142.65
Pulled toward the 2025 year-end level+0.013.50

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