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Judith Kobin

Portland, OR
4.0C year-end 2025
185 matches · 90W–95L · seasons 20192026
Bump probability
3.54.04.5lowhigh

Where this rating stands today. Taller means more likely. The dashed lines are the band edges, and the three shaded areas are the three percentages below.

3.50
estimated dynamic rating
Where the rating sits now, on 20 matches this season · USTA never publishes this number
48%
down to 3.5
52%
stay 4.0
0%
up to 4.5
Projected to December: 29% down · 71% stay · 0% up, from a year-end estimate of 3.55. Higher than today’s 3.50 because players this far below their band have historically finished nearer the middle of it.

A 4.0 runs from 3.51 to 4.00. This rating sits in the bottom of the band, and every match moves it.

Our estimate, not a USTA figure — scale measured at this point of 2023 on 2160 players. Graded publicly in December when USTA publishes year-end ratings. It moves when you play, and occasionally when we improve the model.

Where you rank
Portland · 4.0
243 of 266
OR · 4.0
455 of 498

Judith is ranked among players at the same level in the same place, by our estimated dynamic rating — not the published level, which is the same for everyone in the band. Groups smaller than five are not ranked, because a placing out of two is noise dressed as standing.

Teams104 teams · 2005–2027
Over timerating by season, and how you rank
Rating by season

Judith has played at 4.0, 3.5 across 8 seasons — 1 move up and 1 down.

3.03.54.020192020202120222023202420252026

The line is our estimate; the horizontal lines are level boundaries, so crossing one is a bump. Hollow points are years we inferred from the level played the following season, because USTA publishes a current rating but no history.

How you rank at your level
At 4.0, Judith has gone from the 44th to the 25th percentile of players at that level, 2019 to 2026.

Percentile compares the same level in the same season, by share of games won. Mixed is shown for context — USTA rules exclude it from your adult rating unless mixed is all you play.

By level6 levels played
3.5
3W–0L
not enough matches yet
4.0
42.4%
28W–38L · 45.3% of games
7.0
50%
8W–8L · 53.1% of games
8.0
53.4%
31W–27L · 52.7% of games
7.0mixed
62.5%
5W–3L · 52.8% of games
8.0mixed
35.7%
10W–18L · 45.1% of games

Games won matters more than matches won — NTRP adjusts on margins.

Match history185 matches
L
2026-05-24 · WHRC-Leong · #1 Doubles · 4.0 · with Heidi Wilcox
0.027below expectation — took 35% of games against 49% expected
7-5, 6-2
W
Ann Wright / Holly Guntermann
2026-05-13 · WHRC-Vangasse/Zagunis · #3 Doubles · 7.0 · with Marlene Huntsinger
+0.051better than expected — took 92% of games against 61% expected
6-0, 6-1
L
2026-05-03 · WHRC-Webb · #1 Doubles · 7.0 · with Nic Hawken
+0.000about as expected — took 38% of games against 35% expected
7-5, 6-3
W
2026-05-03 · WHRC-Leong · #1 Doubles · 4.0 · with Claire Thayer
0.022below expectation — took 53% of games against 62% expected
6-3, 3-6, 1-0
W
2026-04-30 · NOR-WHRC-Kobin/Witcosky · #3 Doubles · 8.0 · with Claire Thayer
+0.002about as expected — took 57% of games against 55% expected
6-4, 7-6
L
2026-04-25 · WHRC-Moreno · #2 Doubles · 8.0 · with J Sean Fields
+0.000below expectation — took 25% of games against 37% expected
6-1, 6-3
L
2026-04-24 · WHRC-Vangasse/Zagunis · #1 Doubles · 7.0 · with Sadhana Kapur
0.004below expectation — took 33% of games against 39% expected
6-4, 6-2
L
2026-04-19 · WHRC-Moreno · #1 Doubles · 8.0 · with J Sean Fields
+0.000about as expected — took 47% of games against 51% expected
3-6, 6-3, 1-0
L
2026-04-18 · WHRC-Leong · #2 Doubles · 4.0 · with Sue Harrison
+0.001about as expected — took 32% of games against 36% expected
6-1, 7-5
L
2026-04-17 · NOR-WHRC-Kobin/Witcosky · #2 Doubles · 8.0 · with Sandi Martes
+0.007about as expected — took 33% of games against 35% expected
6-2, 6-4
L
2026-04-17 · WHRC-Webb · #1 Doubles · 7.0 · with DeWayne Ledbetter
+0.000below expectation — took 14% of games against 47% expected
6-0, 6-2
W
2026-03-20 · NOR-WHRC-Kobin/Witcosky · #3 Doubles · 8.0 · with Claire Thayer
+0.038better than expected — took 86% of games against 61% expected
6-2, 6-0
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