MatchPoint

Player profile

Karen Isaac’s NorCal tennis rating

Karen Isaac
USTA 3.0 · NorCal league player
3.14
current
▲ +0.35 this season

Other formats · don’t affect your rating above

Combo 3.03Mixed 3.04
USTA3.00
2026
11 matches
3.193.103.00
Feb · 3.07
Jun · 3.14
Sep 18 · Doubles−0.04
L A. Brandt / E. High
6-4,3-6,0-1 · 1D · with Kyung Kim
● 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

11 matches

Published NorCal results in 2026 — 6 scoring, 5 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 18, 2026 · Doubles · 1D · Combo

Lost 6-4,3-6,0-1
−0.04

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.03
Kyung Kim(partner)Currently on CARMEL VAC CW7.5A-DT
3.21

Opponents

Amy BrandtCurrently on SPANISH BAY CW6.5A-DT
3.20
Erin HighCurrently on SPANISH BAY CW7.5A-DT
3.61
Combo rating 3.07 → 3.03Doubles result

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

Sep 16, 2026 · Doubles · 2D · Combo

Lost 3-6,1-6
−0.07

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.03
Barbara Ehrenpreis(partner)Currently on CARMEL VAC CW6.5A-DT
3.20

Opponents

Mary SchererCurrently on CARMEL V RANCH CW6.5A-DT
3.03
Sabrina TaylorCurrently on CARMEL V RANCH CW7.5A-DT
3.80
Combo rating 3.14 → 3.07Doubles result

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

Sep 13, 2026 · Doubles · 2D · Combo

Lost 3-6,4-6
−0.09

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.03
Jacqueline Lautzenhiser(partner)Currently on CARMEL VAC CW6.5A
3.20

Opponents

Karen SemingsonCurrently on SEASCAPE SC CW6.5A
3.42
Barbara StewartCurrently on SEASCAPE SC CW6.5A
3.13
Combo rating 3.23 → 3.14Doubles result

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

Sep 12, 2026 · Doubles · 2D · Combo

Won 7-5,6-3
+0.07

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.03
Jennifer Leighton(partner)Currently on CARMEL VAC CW6.5A
3.14

Opponents

Raquel WegnerCurrently on SEASCAPE SC CW6.5A
2.83
Christine StyleCurrently on SEASCAPE SC CW6.5A
2.80
Combo rating 3.16 → 3.23Doubles result

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

Sep 4, 2026 · Doubles · 2D · Combo

Won 6-4,7-6
+0.14

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.03
Margaret Wolfli(partner)Currently on CARMEL VAC CW6.5A-DT
2.90

Opponents

Bryn StaffordCurrently on CARMEL V RANCH CW6.5A-DT
3.37
Sarah MillerCurrently on CARMEL V RANCH CW6.5A-DT
3.49
Combo rating 3.02 → 3.16Doubles result

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

Feb 7, 2026 · Doubles

Lost 2-6,4-6
−0.08

Karen’s side

Karen IsaacCurrently on CARMEL VAC CW6.5A-DT
3.14
Regina Morrison(partner)Currently on SPANISH BAY CW7.5A-DT
3.50

Opponents

Maryam MalekianCurrently on SILVER CREEK 55MX7.0A
3.33
Erna NishimeCurrently on SILVER CREEK CW6.5A-DT
3.12
Rating 3.07 → 3.00Doubles result
Best match
+0.16
Mar 1 vs D. Armstrong / D. Sanchez
Worst match
−0.17
May 9 vs K. Scarborough / J. Murphy
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

Karen Isaac’s MatchPoint NorCal tennis rating is 3.14, 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+0.142.93
Pulled toward the 2025 year-end level+0.123.07

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