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Brent Grubb

Portland, OR
4.0C year-end 2025
116 matches · 46W–70L · seasons 2019–2026
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.

3.55
estimated dynamic rating
Where the rating sits now, on 25 matches this season · USTA never publishes this number
25%
down to 3.5
75%
stay 4.0
0%
up to 4.5
Projected to December: 15% down · 85% stay · 0% up, from a year-end estimate of 3.58. Higher than today’s 3.55 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
226 of 266
OR · 4.0
416 of 498

Brent 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

Brent has played at 3.5, 4.0 across 7 seasons — 1 move up and 0 down.

3.03.54.02019202020222023202420252026

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, Brent has gone from the 17th to the 11th percentile of players at that level, 2022 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 level7 levels played
3.5
55.6%
10W–8L · 56.5% of games
4.0
33.3%
16W–32L · 43.7% of games
4.5
25%
4W–12L · 39.3% of games
6.0mixed
75%
3W–1L · 57.4% of games
7.0mixed
87.5%
7W–1L · 60.8% of games
8.0mixed
30%
6W–14L · 42.6% of games
9.0mixed
0W–2L
not enough matches yet

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

Match history116 matches
L
2026-07-26 · #2 Doubles · 8.0 · with Morgan Cowling
+0.000below expectation — took 25% of games against 41% expected
6-0, 6-4
L
2026-07-18 · #3 Doubles · 8.0 · with Morgan Cowling
+0.000below expectation — took 41% of games against 51% expected
6-4, 7-5
L
2026-07-17 · #2 Doubles · 8.0 · with Libby North
+0.000about as expected — took 45% of games against 43% expected
4-6, 6-3, 1-0
L
2026-07-12 · #3 Doubles · 8.0 · with Morgan Cowling
+0.000below expectation — took 0% of games against 39% expected
6-0, 6-0
W
2026-06-27 · #2 Doubles · 8.0 · with Morgan Cowling
+0.000better than expected — took 71% of games against 53% expected
6-4, 6-1
L
2026-06-14 · #2 Doubles · 4.5 · with Nathan Mouchard
−0.002below expectation — took 29% of games against 36% expected
6-4, 6-1
L
Ajay Kumar Tippisetti / Michael Furuya
2026-06-06 · #2 Doubles · 4.5 · with David Boyer
−0.031below expectation — took 8% of games against 33% expected
6-1, 6-0
L
2026-05-31 · #3 Doubles · 4.0 · with Willis Boyer
+0.030better than expected — took 48% of games against 37% expected
7-6, 6-7, 1-0
L
2026-05-31 · #1 Doubles · 4.5 · with Justin Ford
+0.029about as expected — took 33% of games against 29% expected
6-2, 6-4
L
Tyrese Toomey / Tan Nguyen
2026-05-22 · #2 Doubles · 4.5 · with Alex Simpson
−0.002below expectation — took 29% of games against 36% expected
6-3, 6-2
W
2026-04-26 · #3 Doubles · 4.5 · with Nathan Mouchard
+0.006better than expected — took 67% of games against 61% expected
6-3, 6-3
L
2026-04-25 · #3 Doubles · 4.0 · with Pete Jacobs
−0.060below expectation — took 29% of games against 58% expected
6-3, 6-2
What an account addsprivate to you

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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.