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Ernest Oon

Redondo Beach, CA
4.5C year-end 2025
147 matches · 93W–54L · seasons 20192026
Bump probability
4.04.55.0lowhigh

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.

3.91
estimated dynamic rating
Where the rating sits now, on 12 matches this season · USTA never publishes this number
87%
down to 4.0
13%
stay 4.5
0%
up to 5.0
Projected to December: 62% down · 38% stay · 0% up, from a year-end estimate of 3.98. Higher than today’s 3.91 because players this far below their band have historically finished nearer the middle of it.

A 4.5 runs from 4.01 to 4.50. 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
CA · 4.5
7 of 8

Ernest 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.

Over timerating by season, and how you rank
Rating by season

Ernest has been 4.5 for all 8 seasons on record, but moved a long way inside it — from the bottom of the band to the top.

4.04.520192020202120222023202420252026

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 4.5, Ernest has gone from the 65th to the 58th percentile of players at that level, 2019 to 2025.

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
4.5
66.2%
53W–27L · 56.2% of games
5.0
75%
3W–1L · 61.8% of games
8.0mixed
66.7%
6W–3L · 59.5% of games
8.5mixed
54.5%
6W–5L · 59.8% of games
9.0mixed
62.5%
20W–12L · 53.9% of games
9.5mixed
1W–1L
not enough matches yet

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

Match history147 matches
W
N/Amixed
2026-05-03 · #3 Doubles · 9.0 · with Karin Fuire
+0.000about as expected — took 100% of games against 96% expected
6-0, 6-0
L
2026-03-28 · #2 Doubles · 4.5 · with Michael Catalano
0.000about as expected — took 42% of games against 43% expected
4-6, 6-2, 1-0
W
Michael Borenstein / Kara Godfreymixed
2026-03-22 · #3 Doubles · 9.0 · with Marne Darrall
+0.000below expectation — took 54% of games against 70% expected
6-7, 7-5, 1-0
W
N/Amixed
2026-03-08 · #3 Doubles · 9.0 · with Mae Loftus
+0.000about as expected — took 100% of games against 96% expected
6-0, 6-0
L
2026-02-08 · #2 Doubles · 9.0 · with Belinda Smith
+0.000below expectation — took 29% of games against 39% expected
6-1, 6-4
W
April Denise Belcher / Crombie Hatfieldmixed
2026-02-01 · #2 Doubles · 9.0 · with Belinda Smith
+0.000better than expected — took 75% of games against 52% expected
6-3, 3-0
L
2026-01-31 · #1 Doubles · 4.5 · with Michael Catalano
0.114below expectation — took 20% of games against 68% expected
6-1, 6-2
L
Clinten Butts / Emily Adamsmixed
2026-01-25 · #2 Doubles · 9.0 · with Lucy Twohy
+0.000below expectation — took 41% of games against 50% expected
6-7, 6-2, 1-0
L
2026-01-25 · #3 Doubles · 8.0 · with Cheri Prescott
+0.000below expectation — took 25% of games against 55% expected
6-2, 6-2
W
Zack Messer / Jason Tang
2026-01-24 · #2 Doubles · 4.5 · with Michael Catalano
0.029below expectation — took 50% of games against 62% expected
7-6, 4-6, 1-0
W
2026-01-11 · #2 Doubles · 8.0 · with Tracey Cutler
+0.000better than expected — took 75% of games against 61% expected
6-2, 6-2
L
Chris Hubbard / Cruz Colmenares
2026-01-10 · #1 Doubles · 4.5 · with Michael Catalano
0.026below expectation — took 35% of games against 49% expected
7-5, 6-2
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Not affiliated with or endorsed by the USTA. Rating shown is the published USTA year-end figure; match data is from USTA TennisLink.