Jun 14, 2025 · Doubles
Lost 5-7,6-7
−0.06
William’s side
David Wei(partner)Currently on MOUNTAIN VIEW TC/RENGSTORFF PK CM7.5B
3.59Rating 3.04 → 2.98Doubles result
Player profile
William Haberkorn’s NorCal tennis rating
William Haberkorn
USTA 3.5 · NorCal league player
current
▲ +0.32 this season
Other formats · don’t affect your rating above
Mixed 3.18
Active teams
No active team listing yet.
USTA3.50
2025
11 matches
Apr · 2.71
Jun · 2.98
Jun 14 · Doubles−0.06
L H. Peng / J. Lam
5-7,6-7 · with David Wei
● 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.
Jun 1, 2025 · Doubles
Lost 0-6,2-6
−0.04
William’s side
Brandt Fuse(partner)Currently on SAN CARLOS TC/ARGUELLO PK 40MX7.0A
3.16Opponents
Michael WongCurrently on GLTF/SAN FRAN ST U CM7.5A
3.54Taylor HornCurrently on SAN CARLOS TC/ARGUELLO PK CM7.5B
3.74Rating 3.08 → 3.04Doubles result
May 31, 2025 · Doubles
Won 7-6,4-6,1-0
+0.14
William’s side
Akhil Hazari(partner)Currently on MOUNTAIN VIEW TC/RENGSTORFF PK CM7.5C
3.62Rating 2.94 → 3.08Doubles result
May 18, 2025 · Doubles
Lost 0-6,1-6
−0.09
William’s side
Minh La(partner)Currently on WASHINGTON PK - BURLINGAME CM7.5A
3.26Opponents
Brian McpeakeCurrently on BELVEDERE TC CM7.5A
3.35Max CatalanoCurrently on OLYMPIC CM7.5A
3.18Rating 3.03 → 2.94Doubles result
Apr 26, 2025 · Doubles
Won 6-7,6-1,1-0
+0.15
William’s side
Nhan Nguyen(partner)Currently on WASHINGTON PK - BURLINGAME CM7.5A
3.53Opponents
Jong-chyi SuCurrently on SAN CARLOS TC/ARGUELLO PK CM7.5B
3.42Wei-sheng LaiCurrently on SAN CARLOS TC/ARGUELLO PK CM7.5B
3.22Rating 2.88 → 3.03Doubles result
Apr 20, 2025 · Doubles
Won 6-4,6-2
+0.17
William’s side
Nhan Nguyen(partner)Currently on WASHINGTON PK - BURLINGAME CM7.5A
3.53Rating 2.71 → 2.88Doubles result
Mar 1, 2025 · Doubles · Mixed
Lost 1-6,4-6
−0.02
Opponents
Timothy ChongCurrently on WALNUT CREEK RC/Walnut Creek TC CM7.5B
3.53Lily TanCurrently on GOLDMAN TC CW8.5B
3.82Mixed rating 3.24 → 3.21Doubles result
Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.
Feb 22, 2025 · Doubles · Mixed
Won 6-2,4-6,1-0
+0.13
Mixed rating 3.10 → 3.24Doubles result
Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.
Feb 15, 2025 · Doubles · Mixed
Lost 6-2,3-6,0-1
−0.01
Mixed rating 3.11 → 3.10Doubles result
Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.
Jan 26, 2025 · Doubles · Mixed
Won 7-5,2-6,1-0
+0.09
Mixed rating 3.03 → 3.11Doubles result
Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.
Jan 25, 2025 · Doubles · Mixed
Lost 1-6,1-6
−0.05
William’s side
Jill Nagahara-evans(partner)Currently on MOUNTAIN VIEW TC/RENGSTORFF PK CW6.5A-DT
3.13Mixed rating 3.08 → 3.03Doubles result
Mixed results move their own rating, not your NTRP — USTA computes NTRP from adult singles and doubles only.
Best match
+0.17
Apr 20 vs B. Gomola / M. Westermann
Worst match
−0.09
May 18 vs B. Mcpeake / M. Catalano
▲
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
William Haberkorn’s MatchPoint NorCal tennis rating is 3.11, 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−0.082.71
Pulled toward the 2025 year-end level+0.123.11
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