MatchPoint

Player profile

George Isaac’s NorCal tennis rating

George Isaac
USTA 4.0 · NorCal league player
3.32
current
▼ −0.02 this season
91% likely to move down

Other formats · don’t affect your rating above

Mixed 3.32
USTA4.00
2026
5 matches
3.353.343.32
May · 3.35
May · 3.32
Aug 30 · Doubles−0.11
L J. Castronuevo / A. Rohnert
6-1,4-6,0-1 · 3D · with Casey Riddell
● 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

5 matches

Published NorCal results in 2026 — 1 scoring, 4 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Aug 30, 2026 · Doubles · 3D · Mixed

Lost 6-1,4-6,0-1
−0.11

George’s side

George IsaacCurrently on SPANISH BAY 40MX7.0A
3.32
Casey Riddell(partner)Currently on CHAMISAL TC CW7.5A
3.19

Opponents

Joselito CastronuevoCurrently on RIDGEMARK G&CC 55MX7.0A
3.33
Allison RohnertCurrently on RIDGEMARK G&CC 55MX7.0A
3.45
Mixed rating 3.43 → 3.32Doubles result

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

Aug 2, 2026 · Doubles · Mixed

Lost 5-7,1-6
−0.20

George’s side

George IsaacCurrently on SPANISH BAY 40MX7.0A
3.32
Maureen Webb(partner)Currently on SPANISH BAY CW7.5A-DT
3.04

Opponents

Pete KinkeadCurrently on RIO DEL MAR CM6.5A
3.28
Dana SpaniermanCurrently on RIO DEL MAR 40MX7.0A
3.25
Mixed rating 3.63 → 3.43Doubles result

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

Jul 19, 2026 · Doubles · 2D · Mixed

Won 6-4,6-2
+0.15

George’s side

George IsaacCurrently on SPANISH BAY 40MX7.0A
3.32
Nancy P Taylor(partner)Currently on SPANISH BAY CW7.5A-DT
3.49

Opponents

Patrick McbreartyCurrently on RIDGEMARK G&CC 55MX7.0A
3.57
Tina PalkoCurrently on RIDGEMARK G&CC 40MX7.0A
3.27
Mixed rating 3.48 → 3.63Doubles result

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

Feb 22, 2026 · Doubles · Mixed

Lost 6-3,0-6,0-1
−0.13

George’s side

George IsaacCurrently on SPANISH BAY 40MX7.0A
3.32
Nancy P Taylor(partner)Currently on SPANISH BAY CW7.5A-DT
3.49

Opponents

Max MarinovichCurrently on SEASCAPE SC CM7.5A
3.11
Laurie GlynnCurrently on RIO DEL MAR 40MX8.0A
3.34
Mixed rating 3.61 → 3.48Doubles result

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

Best match
−0.03
May 30 vs A. Siongco / J. Culler
Worst match
−0.03
May 30 vs A. Siongco / J. Culler
Where you started ›3.34
2019 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 Sep 20

George Isaac’s MatchPoint NorCal tennis rating is 3.32, 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+0.013.35
Pulled toward the 2025 year-end level+0.003.35

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