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Brook Vietor

Park City, UT
4.5C year-end 2025
191 matches · 147W–44L · seasons 2019–2026
Bump probability
4.04.55.0lowhigh
Where this rating stands today. Taller means more likely.
i
The dashed lines are the edges of your band. The three shaded areas are exactly the three percentages below — area here is the chance of one outcome for you, not a count of players.
4.62
estimated dynamic rating
Where the rating sits now, on 20 matches this season · USTA never publishes this number
0%
down to 4.0
7%
stay 4.5
93%
up to 5.0
Projected to December: 0% down · 48% stay · 52% up, from a year-end estimate of 4.50. Lower than today’s 4.62 because form regresses — players this far above their band partway through a season have historically finished nearer the middle of it. Keep playing at this level and the numbers above are the ones that hold.

A 4.5 runs from 4.01 to 4.50. This rating sits in the top of the band, and every match moves it.

Our estimate, not a USTA figure.
i
scale measured at this point of 2023 on 2160 players. It moves when you play, and occasionally when we improve the model. USTA publishes year-end ratings in December, which is when this gets graded against what actually happened.
Where you rank
UT · 4.5
2 of 28
By our estimated rating, not the published level.
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Brook is ranked against players at the same level in the same place. The published level is identical for everyone in a band, so it cannot separate them — our estimate can. Groups smaller than five are not ranked at all, because a placing out of two is noise dressed as standing.
Over timerating by season, and how you rank
Rating by season

Brook has been 4.5 for all 7 seasons on record, but moved a long way inside it — from the middle of the band to the top.

4.04.52019202120222023202420252026

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, Brook has gone from the 77th to the 94th 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 level7 levels played
0.0
75%
3W–1L · 58.8% of games
4.5
81.2%
95W–22L · 61.9% of games
5.0
3W–0L
not enough matches yet
8.0mixed
0W–1L
not enough matches yet
8.5mixed
60%
3W–2L · 63.3% of games
9.0mixed
50%
7W–7L · 54.2% of games
9.5mixed
2W–0L
not enough matches yet

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

Match history191 matches
W
Jen Dickey / Marianne Squires
2026-07-30 · #1 Doubles · 4.5 · with Kimberly Simpson
expectation pending — we're still fetching an opponent's record
6-1, 6-1
W
2026-07-20 · #1 Doubles · 4.5 · with Arashan Heikkila
−0.060below expectation — took 57% of games against 76% expected
6-4, 7-6
W
2026-07-16 · #1 Doubles · 4.5 · with Diana Granger
expectation pending — we're still fetching an opponent's record
6-2, 6-3
W
Cyndi Jones / Mariana Gaitan
2026-07-13 · #2 Doubles · 4.5 · with Tracey Valentine
expectation pending — we're still fetching an opponent's record
6-1, 6-2
W
Diana Granger / Lynette Duranmixedchamps
2026-06-20 · #2 Doubles · with Arashan Heikkila
mixed — doesn't count toward your NTRP rating
6-2, 6-2
W
Marissa Jackson / Linda Marzmixedchamps
2026-06-19 · #2 Doubles · with Kimberly Simpson
mixed — doesn't count toward your NTRP rating
6-1, 6-4
W
Rosa McGuire / Lisa Caldwellmixedchamps
2026-06-19 · #3 Doubles · with Heidi Gordon
mixed — doesn't count toward your NTRP rating
6-3, 7-6
W
Karina Herman / Nanette Heath
2026-06-01 · #1 Doubles · 4.5 · with Heidi Gordon
expectation pending — we're still fetching an opponent's record
6-4, 6-3
W
Amy Woolley / Cathy Davis
2026-05-28 · #1 Doubles · 4.5 · with Deyce Peterson
expectation pending — we're still fetching an opponent's record
6-2, 3-6, 1-0
W
Cathy Davis / Marianne Squires
2026-05-26 · #1 Doubles · 4.5 · with Arashan Heikkila
expectation pending — we're still fetching an opponent's record
6-0, 6-1
W
Kala Riester / Miranda Edwards
2026-05-21 · #1 Doubles · 4.5 · with Kimberly Simpson
expectation pending — we're still fetching an opponent's record
3-6, 6-4, 1-0
W
Maribel Alvarez / Cherstin Harris
2026-05-14 · #1 Doubles · 4.5 · with Stephanie Tonin
expectation pending — we're still fetching an opponent's record
6-3, 6-1
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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.