MatchPoint

Player profile

Kathy Sonderby’s NorCal tennis rating

Kathy Sonderby
USTA 4.0 · NorCal league player
3.68
current
▼ −0.21 this season

Other formats · don’t affect your rating above

Combo 3.41Mixed 3.51
USTA4.00
2025
14 matches
4.093.833.57
Jan · 3.97
Apr · 3.57
Apr 27 · Doubles−0.11
L E. Clahan / M. Schwirtz
0-6,5-7 · with Ann Robinson
● 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

4 matches

Published NorCal results in 2026 — 0 scoring, 4 combo or mixed. Combo and mixed don’t affect NTRP ratings.

Sep 15, 2026 · Doubles · 1D · Combo

Lost 4-6,5-7
−0.09

Kathy’s side

Kathy SonderbyCurrently on SCOTT VALLEY CW7.5A-DT
3.41
Melissa Cohen(partner)Currently on SCOTT VALLEY CW6.5A
3.14

Opponents

Katie WardCurrently on ROLLING HILLS CW7.5A
3.74
Danielle HarrisCurrently on ROLLING HILLS CW6.5A-DT
3.52
Combo rating 3.50 → 3.41Doubles result

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

Sep 14, 2026 · Doubles · 3D · Combo

Won 6-4,6-7,1-0
+0.12

Kathy’s side

Kathy SonderbyCurrently on SCOTT VALLEY CW7.5A-DT
3.41
Laura Spence(partner)Currently on SCOTT VALLEY CW8.5A
3.93

Opponents

Susan TunnellCurrently on TIBURON PEN C CW7.5A-DT
3.65
Cheryl BronsteinCurrently on TIBURON PEN C CW7.5A-DT
3.48
Combo rating 3.38 → 3.50Doubles result

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

Aug 28, 2026 · Doubles · 3D · Combo

Lost 4-6,6-4,0-1
−0.05

Kathy’s side

Kathy SonderbyCurrently on SCOTT VALLEY CW7.5A-DT
3.41
Ann Robinson(partner)Currently on SCOTT VALLEY CW8.5A
3.55

Opponents

Kristen MaryCurrently on TENNIS COALITION SF/GOLDMAN TC CW7.5A-DT
3.63
Julie HoutkooperCurrently on REDWOOD HS CW7.5A
3.73
Combo rating 3.42 → 3.38Doubles result

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

Jun 25, 2026 · Doubles · Mixed

Lost 4-6,7-5,0-1
−0.09

Kathy’s side

Kathy SonderbyCurrently on SCOTT VALLEY CW7.5A-DT
3.51
Mark Downing(partner)Currently on SCOTT VALLEY CM7.5A
3.29

Opponents

Michael GrazianoCurrently on MARIN TC 55MX7.0A
3.83
Paige GrazianoCurrently on MARIN TC CW6.5A
3.43
Mixed rating 3.60 → 3.51Doubles result

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

Best match
+0.13
Jan 19 vs L. Schuller / T. Mcculloch
Worst match
−0.21
Apr 18 vs M. Manuilow / A. Morris
Where you started ›3.89
2022 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

Kathy Sonderby’s MatchPoint NorCal tennis rating is 3.68, an independent estimate based on published NorCal league results through September 20, 2026. They are currently rostered on 4 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+0.083.97
Pulled toward the 2025 year-end level+0.113.68

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