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John Bui

Portland, OR
4.5C year-end 2025
60 matches · 21W–39L · seasons 20222026
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.

4.09
estimated dynamic rating
Where the rating sits now, on 7 matches this season · USTA never publishes this number
12%
down to 4.0
88%
stay 4.5
0%
up to 5.0
Projected to December: 8% down · 92% stay · 0% up, from a year-end estimate of 4.11. Higher than today’s 4.09 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
Portland · 4.5
57 of 119
OR · 4.5
112 of 226

John 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.

Teams15 teams · 2018–2026
PT&E/SJRC-Bui
2026 Mixed 18 & Over · 9.0 Mixed
2026
PT&E/SJRC-Truong/Bui
2026 Adult 18 & Over · 4.5 Men
2026
PTC-Bui
2025 Mixed 18 & Over · 9.0 Mixed
2025
GLVR-Tran
2025 Mixed 18 & Over · 8.0 Mixed
2025
PT&E/SJRC-Truong/Bui
2025 Adult 18 & Over · 4.5 Men
2025
Bui/Talpos
2025 One Doubles · 4.5 Men
2025
Over timerating by season, and how you rank
Rating by season

John has been a steady 4.5 across all 5 seasons on record.

4.04.520222023202420252026

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 — 2023 — 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, John has gone from the 4th to the 34th percentile of players at that level, 2024 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 level5 levels played
4.0
83.3%
5W–1L · 70.6% of games
4.5
14.8%
4W–23L · 37.4% of games
9.0
80%
4W–1L · 77.1% of games
8.0mixed
16.7%
1W–5L · 41.1% of games
9.0mixed
43.8%
7W–9L · 47.5% of games

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

Match history60 matches
L
2026-06-13 · PT&E/SJRC-Truong/Bui · #1 Doubles · 4.5 · with Michael Mahaney
+0.016better than expected — took 55% of games against 45% expected
7-6, 2-6, 1-0
L
2026-05-24 · PT&E/SJRC-Truong/Bui · #1 Doubles · 4.5 · with Michael Mahaney
+0.001about as expected — took 48% of games against 47% expected
4-6, 6-4, 1-0
L
Josiah Petersen / Joshua Bradshaw
2026-04-25 · PT&E/SJRC-Truong/Bui · #1 Doubles · 4.5 · with Michael Mahaney
+0.010about as expected — took 48% of games against 43% expected
7-5, 4-6, 1-0
L
2026-04-17 · PT&E/SJRC-Truong/Bui · #3 Doubles · 4.5 · with Michael Mahaney
0.022below expectation — took 43% of games against 53% expected
6-7, 6-3, 1-0
L
2026-04-12 · PT&E/SJRC-Truong/Bui · #2 Doubles · 4.5 · with Nick Casalbore
0.046below expectation — took 37% of games against 58% expected
6-3, 6-4
L
Simon Collis / Rebecca Yumixed
2025-12-07 · PT&E/SJRC-Bui · #2 Doubles · 9.0 · with Shelly Suzuki
+0.000below expectation — took 20% of games against 50% expected
6-1, 6-2
L
Alix Edwards / Shane Adam Youngmixed
2025-12-06 · PT&E/SJRC-Bui · #3 Doubles · 9.0 · with Megan Soucy
+0.000better than expected — took 38% of games against 29% expected
6-2, 7-6
L
2025-08-06 · Bui/Talpos · #1 Doubles · 4.5 · with Kenton Bui
+0.029better than expected — took 50% of games against 38% expected
6-4, 3-6, 1-0
L
2025-08-05 · Bui/Talpos · #1 Doubles · 4.5 · with Kenton Bui
0.017below expectation — took 33% of games against 44% expected
6-2, 6-4
L
2025-08-03 · Bui/Talpos · #1 Doubles · 4.5 · with Kenton Bui
0.010below expectation — took 39% of games against 45% expected
6-1, 4-6, 1-0
W
Andrew Slominski / Zachary Slade
2025-07-26 · Bui/Talpos · #1 Doubles · 4.5 · with Kenton Bui
+0.044better than expected — took 53% of games against 37% expected
1-6, 6-1, 1-0
L
2025-07-25 · Bui/Talpos · #1 Doubles · 4.5 · with Anh Ngo
0.068below expectation — took 14% of games against 50% expected
6-1, 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.