MatchPoint

Player profile

Karen Frederick’s NorCal tennis rating

Karen Frederick
USTA 4.0 · NorCal league player
3.81
current
▼ −0.08 this season

Other formats · don’t affect your rating above

Combo 3.69Mixed 3.51
USTA4.00
2026
19 matches
3.843.673.51
Feb · 3.75
Jun · 3.81
Sep 6 · Doubles−0.17
L K. Ryan / M. Ryan
4-6,2-6 · 1D · with Kevin Saxon
● 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

19 matches

Published NorCal results in 2026 — 8 scoring, 11 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 6, 2026 · Doubles · 1D · Mixed

Lost 4-6,2-6
−0.17

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.51
Kevin Saxon(partner)Currently on ALMADEN SR CM6.5A
3.00

Opponents

Kelly RyanCurrently on LOS GATOS SR 55MX7.0A
3.59
Margaret RyanCurrently on LOS GATOS SR 55MX7.0A
3.35
Mixed rating 3.68 → 3.51Doubles result

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

Sep 3, 2026 · Doubles · 3D · Combo

Lost 2-6,1-6
−0.05

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Michele Rumfola(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.76

Opponents

Kelly UyemaCurrently on SUNNYVALE MTC CW8.5D
4.09
Bowyee GongCurrently on WILLOW PASS PK CW7.5A
4.13
Combo rating 3.74 → 3.69Doubles result

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

Aug 13, 2026 · Doubles · Mixed

Won 6-3,3-6,1-0
+0.14

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.51
Wei Han(partner)Currently on SUNNYVALE MTC CM7.5A
3.56

Opponents

Bharat PoriaCurrently on MORGAN HILL TC/MORGAN HILL TC 55MX7.0A
3.59
Rachel BanseCurrently on RIDGEMARK G&CC 40MX8.0A
3.68
Mixed rating 3.55 → 3.68Doubles result

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

Jul 21, 2026 · Doubles · Mixed

Lost 4-6,4-6
−0.02

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.51
Raghu Bhat(partner)Currently on SUNNYVALE MTC CM7.5A
3.61

Opponents

Ellen HilbrichCurrently on LOS GATOS SR CW7.5B
3.93
Bryan RichterCurrently on LOS GATOS SR CM7.5A
4.03
Mixed rating 3.57 → 3.55Doubles result

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

Jul 19, 2026 · Doubles · Mixed

Lost 3-6,5-7
−0.03

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.51
Ryan Low(partner)Currently on SUNNYVALE TC/SUNNYVALE MTC CM7.5C
4.24

Opponents

Mandy SmithCurrently on LOS GATOS SR CW9.5A
4.30
Chris SmithCurrently on SUNNYVALE TC/SUNNYVALE MTC 40MX7.0B
3.78
Mixed rating 3.60 → 3.57Doubles result

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

Jun 16, 2026 · Doubles · Mixed

Lost 3-6,2-6
−0.03

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.51
Raphael Durst(partner)Currently on ALMADEN VAC 55MX8.0A
3.69

Opponents

John HuynhCurrently on LOS PASEOS PK CM8.5A
4.22
Rosemary KentCurrently on BAY CLUB COURTSIDE CW8.5A-DT
3.87
Mixed rating 3.63 → 3.60Doubles result

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

Jun 14, 2026 · Doubles

Won 6-3,6-2
+0.05

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.81
Jean Welch(partner)Currently on ALMADEN VAC CW7.5A
3.60

Opponents

Ella WuCurrently on RINCONADA PK 55MX8.0A
3.69
Twinee MadanCurrently on GOLDEN GATEWY CW7.5A
3.28
Rating 3.75 → 3.81Doubles result

May 23, 2026 · Doubles

Lost 4-6,6-3,0-1
−0.09

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.81
Rini Sidartawan-lie(partner)Currently on ALMADEN SR CW7.5A
3.59

Opponents

Dorothy YangCurrently on SUNNYVALE TC/SUNNYVALE MTC CW8.5B-DT
3.97
Alba LevitasCurrently on LOS GATOS SR CW8.5A
3.81
Rating 3.84 → 3.75Doubles result

May 16, 2026 · Doubles

Won 6-4,2-6,1-0
+0.15

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.81
Kristin Perry(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.79

Opponents

Jiyun HongCurrently on SUNNYVALE MTC CW8.5C
3.93
Joany GaoCurrently on SUNNYVALE MTC CW8.5C
3.91
Rating 3.69 → 3.84Doubles result

May 6, 2026 · Doubles · Combo

Won 7-5,4-6,1-0
+0.11

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Kelly Nichols(partner)Currently on LOS GATOS SR CW8.5A-DT
4.08

Opponents

Gwynne RollaCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.94
Denise GalocyCurrently on MORGAN HILL TC/MORGAN HILL TC CW7.5A-DT
3.23
Combo rating 3.63 → 3.74Doubles result

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

Apr 25, 2026 · Doubles

Won 6-4,2-6,1-0
+0.06

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.81
Dina Nevarez(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.87

Opponents

Yuki TaguchiCurrently on SUNNYVALE MTC CW7.5C-DT
3.70
Weiwei LuanCurrently on BAY CLUB SANTA CLARA CW7.5A
3.37
Rating 3.63 → 3.69Doubles result

Apr 9, 2026 · Doubles · Combo

Lost 4-6,6-4,0-1
−0.06

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Jean Welch(partner)Currently on ALMADEN VAC CW7.5A
3.52

Opponents

Lisa CampbellCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.84
Angela SullivanCurrently on MORGAN HILL TC/MORGAN HILL TC CW7.5A
3.73
Combo rating 3.69 → 3.63Doubles result

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

Mar 15, 2026 · Doubles

Lost 2-6,1-6
−0.09

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.81
Kristin Perry(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.79

Opponents

Lisa BackusCurrently on SUNNYVALE MTC CW8.5D
4.01
Lori Cruz-sprayCurrently on MOUNTAIN VIEW TC/RENGSTORFF PK CW8.5A-DT
3.83
Rating 3.60 → 3.51Doubles result

Mar 13, 2026 · Doubles · Combo

Lost 1-6,1-6
−0.05

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Patti Rottjakob(partner)Currently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.74

Opponents

Norma AndersonCurrently on HIGHLANDS REC CENTER CW8.5A
3.89
Tracy CowperthwaiteCurrently on SHARON HTS CC CW8.5A
4.06
Combo rating 3.74 → 3.69Doubles result

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

Mar 6, 2026 · Doubles · Combo

Lost 6-3,4-6,0-1
−0.05

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Mariana Lazarovici(partner)
3.53

Opponents

Christina BirdCurrently on SHARON HTS CC CW8.5A
3.95
Lona Means
4.07
Combo rating 3.79 → 3.74Doubles result

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

Feb 27, 2026 · Doubles · Combo

Lost 2-6,2-6
−0.22

Karen’s side

Karen FrederickCurrently on MORGAN HILL TC/MORGAN HILL TC CW8.5A
3.69
Jennifer Roberts(partner)Currently on LOS GATOS SR CW8.5A-DT
3.44

Opponents

Cindy JeungCurrently on CUPERTINO TC/CUPERTINO SC CW7.5A-DT
3.39
Kimberly MotznyCurrently on LOS GATOS SR S70W8.0A
3.59
Combo rating 4.01 → 3.79Doubles result

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

Best match
+0.15
May 16 vs J. Hong / J. Gao
Worst match
−0.16
Mar 7 vs J. Bartlett / R. Kent
Where you started ›3.89
2023 year-end NTRP 4.03.75
Scale calibration+0.14
Season start3.89
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

Karen Frederick’s MatchPoint NorCal tennis rating is 3.81, 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+0.023.91
Pulled toward the 2025 year-end level+0.043.75

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