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Bart Borosky

Portland, OR
4.0C year-end 2025
92 matches · 45W–47L · 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.

3.78
estimated dynamic rating
Where the rating sits now, on 4 matches this season · USTA never publishes this number
0%
down to 3.5
100%
stay 4.0
0%
up to 4.5

A 4.0 runs from 3.51 to 4.00. This rating sits in the middle 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
78 of 266
OR · 4.0
144 of 498

Bart 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.

Teams57 teams · 2003–2026
PTC-Ogden/Lux
2026 Adult 18 & Over · 4.0 Men
2026
N OR-PTC-Borosky
2026 Adult 40 & Over · 4.5 Men
2026
PTC-Borosky
2026 Adult 18 & Over · 4.5 Men
2026
PTC-Kowalewski/James
2025 Mixed 18 & Over · 9.0 Mixed
2025
N OR-PTC-Greenberg
2025 Adult 40 & Over · 4.0 Men
2025
PTC-Ogden/Leedy
2025 Mixed 18 & Over · 8.0 Mixed
2025
Over timerating by season, and how you rank
Rating by season

Bart has played at 4.5, 4.0 across 8 seasons — 0 moves up and 1 down.

3.54.04.520192020202120222023202420252026

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. The smaller, faded points — 2020, 2021, 2026 — rest on fewer than 5 matches, where the estimate is mostly the level the player was entered at rather than anything they did on court. Read the shape, not the value.

How you rank at your level
At 4.5, Bart has gone from the 59th to the 4th 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 level4 levels played
4.0
79.2%
19W–5L · 62.2% of games
4.5
30.8%
12W–27L · 42.9% of games
8.0mixed
0W–2L
not enough matches yet
9.0mixed
83.3%
10W–2L · 64.7% of games

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

Match history92 matches
L
2026-06-13 · PTC-Borosky · #2 Doubles · 4.5 · with David Vant Hof
0.002below expectation — took 29% of games against 36% expected
6-3, 6-2
W
2026-06-07 · PTC-Ogden/Lux · #3 Doubles · 4.0 · with Shiloh Halsey
+0.026better than expected — took 75% of games against 59% expected
6-2, 6-2
W
Franco Rosete
2026-05-24 · PTC-Ogden/Lux · #2 Singles · 4.0
+0.035better than expected — took 63% of games against 46% expected
6-3, 6-4
L
Eddy Rodriguez
2026-04-25 · PTC-Borosky · #1 Singles · 4.5
+0.008below expectation — took 14% of games against 24% expected
6-1, 6-1
L
Jason Metcalf-Lindenburger / Marc Cummingschamps
2025-08-23 · #2 Doubles · with John Droege
0.013about as expected — took 48% of games against 53% expected
4-6, 7-5, 1-0
L
Jeff Brantner / John Erbchamps
2025-08-22 · #2 Doubles · with John Droege
0.023below expectation — took 38% of games against 49% expected
6-1, 6-7, 1-0
L
2025-08-09 · #1 Singles
0.023below expectation — took 44% of games against 54% expected
7-6, 7-5
W
2025-08-08 · PTC-Kowalewski · #1 Doubles · 9.0 · with Jennifer Larsen
+0.000below expectation — took 71% of games against 84% expected
6-4, 6-1
L
Ian Platouchamps
2025-08-08 · #1 Singles
0.034below expectation — took 42% of games against 57% expected
4-6, 6-2, 1-0
W
2025-07-26 · PTC-Kowalewski · #1 Doubles · 9.0 · with Monika Dolega-kowalewski
+0.000better than expected — took 65% of games against 58% expected
7-5, 6-2
W
Jeffrey Truong / Samuel Crawford
2025-07-13 · Ogden-String Theory · #1 Doubles · 4.0 · with Scott Powers
0.012below expectation — took 50% of games against 56% expected
0-6, 6-1, 1-0
W
Sam Kallevigchamps
2025-06-29 · #1 Singles
+0.002about as expected — took 59% of games against 57% expected
3-6, 6-1, 1-0
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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.