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Isabel Roberson

Portland, OR
4.0S year-end 2025
8 matches · 3W–5L · seasons 20222026
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.

3.43
estimated dynamic rating
Where the rating sits now, on 7 matches this season · USTA never publishes this number
80%
down to 3.5
20%
stay 4.0
0%
up to 4.5
Projected to December: 54% down · 46% stay · 0% up, from a year-end estimate of 3.49. Higher than today’s 3.43 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
260 of 266
OR · 4.0
485 of 498

Isabel 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.

Teams3 teams · 2022–2026
Over timerating by season, and how you rank
How you rank at your level

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 level3 levels played
4.0
1W–1L
not enough matches yet
7.0
40%
2W–3L · 39.5% of games
8.0mixed
0W–1L
not enough matches yet

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

Match history8 matches
W
2026-05-03 · GLVR-Buxman/Stromquist · #2 Singles · 4.0
+0.017better than expected — took 55% of games against 48% expected
4-6, 6-3, 1-0
L
2026-03-28 · GLVR-Buxman/Stromquist · #1 Singles · 4.0
+0.010below expectation — took 20% of games against 27% expected
6-2, 6-1
W
2026-03-07 · WHRC-Petersen · #1 Female Singles · 7.0
+0.017better than expected — took 55% of games against 48% expected
6-5
L
2026-03-01 · WHRC-Petersen · #1 Female Singles · 7.0
0.061below expectation — took 25% of games against 55% expected
6-2
L
2026-01-31 · WHRC-Petersen · #1 Female Singles · 7.0
0.070below expectation — took 33% of games against 63% expected
6-3
W
2026-01-17 · WHRC-Petersen · #1 Female Singles · 7.0
0.076below expectation — took 67% of games against 89% expected
6-3
L
2026-01-09 · WHRC-Petersen · #1 Female Singles · 7.0
0.145below expectation — took 0% of games against 67% expected
6-0
L
2021-09-12 · PAC-Lee/Bergthold · #3 Doubles · 8.0 · with Anthony Tran
mixed — doesn't count toward your NTRP rating
6-2, 7-6
What an account addsprivate to you

Signing in lets you point an account at your own record and keep things alongside it: notes on individual matches, your racquet and string setup, restring reminders, friendly matches that never reach TennisLink, and a diary of what you changed and what happened after.

None of it is visible to anyone else. Not to other players, not on your public page, not in search. Every private table is scoped to your account at the database level, so it is enforced rather than promised. The public page you are looking at is built from USTA match results and nothing else.

Not affiliated with or endorsed by the USTA. Rating shown is the published USTA year-end figure; match data is from USTA TennisLink.