Jun 14, 2025 · Doubles
Lost 2-6,1-6
−0.05
Opponents
Eduardo ZerbiniCurrently on DIAMOND HILLS CM6.5A
2.88Tirupathi VenkateshCurrently on DIAMOND HILLS 55MX6.0A
2.70Rating 2.47 → 2.42Doubles result
Player profile
John D Zwerlein’s NorCal tennis rating
John D Zwerlein
USTA 3.0 · NorCal league player
current
▼ −0.25 this season
Active teams
No active team listing yet.
USTA3.00
2025
9 matches
Jan · 2.87
Jun · 2.42
Jun 14 · Doubles−0.05
L E. Zerbini / T. Venkatesh
2-6,1-6 · with Raymond Teeling
● 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
0 matches
Published NorCal league results in 2026.
May 31, 2025 · Doubles
Lost 2-6,2-6
−0.08
Opponents
James BushCurrently on ROUND HILL CC CM6.5A
2.89Mark YoungCurrently on ROUND HILL CC 55MX6.0A
2.62Rating 2.55 → 2.47Doubles result
May 11, 2025 · Doubles
Lost 4-6,1-6
−0.05
Rating 2.60 → 2.55Doubles result
Apr 23, 2025 · Doubles
Lost 2-6,2-6
−0.06
Opponents
John FosterCurrently on ROUND HILL CC CM6.5A
2.83John CranstonCurrently on ROUND HILL CC CM6.5A
2.85Rating 2.66 → 2.60Doubles result
Apr 19, 2025 · Doubles
Lost 1-6,2-6
−0.07
Opponents
Chandra MundraCurrently on WALNUT CREEK RC/Walnut Creek TC CM6.5A
2.86Tony LafranceCurrently on WALNUT CREEK RC/Walnut Creek TC CM6.5A
2.91Rating 2.73 → 2.66Doubles result
Mar 15, 2025 · Doubles
Won 5-7,6-1,1-0
+0.12
Rating 2.61 → 2.73Doubles result
Mar 6, 2025 · Doubles
Lost 0-6,0-6
−0.09
Opponents
Neil KonigsbergCurrently on ROUND HILL CC CM6.5A
2.63James BushCurrently on ROUND HILL CC CM6.5A
2.89Rating 2.70 → 2.61Doubles result
Feb 22, 2025 · Doubles
Lost 3-6,0-6
−0.08
Rating 2.77 → 2.70Doubles result
Jan 13, 2025 · Doubles
Lost 4-6,3-6
−0.10
Opponents
Clint TurnerCurrently on DIAMOND HILLS 55MX6.0A
2.74Tirupathi VenkateshCurrently on DIAMOND HILLS 55MX6.0A
2.70Rating 2.87 → 2.77Doubles result
Best match
+0.12
Mar 15 vs S. Johnson / J. Miller
Worst match
−0.10
Jan 13 vs C. Turner / T. Venkatesh
Where you started ›2.79
2022 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
John D Zwerlein’s MatchPoint NorCal tennis rating is 2.54, an independent estimate based on published NorCal league results through September 20, 2026.
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+0.082.87
Pulled toward the 2025 year-end level+0.122.54
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