Search

Colby Tong

San Francisco, CA
4.5C year-end 2025
57 matches · 39W–18L · 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.

4.28
estimated dynamic rating
Where the rating sits now, on 9 matches this season · USTA never publishes this number
0%
down to 4.0
100%
stay 4.5
0%
up to 5.0

A 4.5 runs from 4.01 to 4.50. 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
CA · 4.5
1 of 8

Colby 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

Colby has played at 5.0, 4.5 across 5 seasons — 0 moves up and 1 down.

4.04.55.020222023202420252026

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 — 2022 — 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

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
4.5
92.9%
13W–1L · 66.5% of games
5.0
30%
3W–7L · 49% of games
8.0mixed
2W–0L
not enough matches yet
9.0mixed
71.4%
10W–4L · 52.5% of games

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

Match history57 matches
L
2026-06-20 · #3 Doubles · with Benjamin Bethards
0.007about as expected — took 41% of games against 45% expected
6-4, 7-5
W
Vincent Lin / Raven Thio
2026-05-08 · #3 Doubles · 4.5 · with Alexander Calpagiu
+0.061better than expected — took 75% of games against 45% expected
6-0, 6-4
W
2026-05-02 · #3 Doubles · 4.5 · with Benjamin Bethards
+0.025better than expected — took 71% of games against 56% expected
6-2, 6-3
W
2026-04-19 · #3 Doubles · 4.5 · with Benjamin Bethards
+0.004better than expected — took 86% of games against 72% expected
6-2, 6-0
W
Conor Doane / Girish Patwardhan
2026-04-18 · #3 Doubles · 4.5 · with Lucas Gorretta
0.002better than expected — took 75% of games against 68% expected
6-3, 6-1
W
Lora Edens / Christian Kevin Galangchamps
2025-12-13 · #2 Doubles · with Emily Pelosi
+0.022better than expected — took 52% of games against 44% expected
6-4, 4-6, 1-0
W
Tricia Zhang / Jay Squiremixed
2025-11-21 · #2 Doubles · 9.0 · with Divya Manohar
+0.000below expectation — took 48% of games against 64% expected
7-5, 2-6, 1-0
W
2025-10-26 · #3 Doubles · 9.0 · with Madhuri Deo
+0.000better than expected — took 68% of games against 56% expected
6-1, 7-5
W
2025-09-27 · #3 Doubles · 9.0 · with Divya Manohar
+0.000better than expected — took 75% of games against 67% expected
6-1, 6-3
W
N/A
2025-05-23 · #2 Doubles · 5.0 · with Alexander Calpagiu
0.126about as expected — took 100% of games against 96% expected
6-0, 6-0
L
2025-05-04 · #2 Doubles · 5.0 · with Donny Baugh
+0.017about as expected — took 33% of games against 32% expected
6-2, 6-4
W
Percy Pan / Andrew Tran
2025-05-02 · #1 Doubles · 4.5 · with Kojiro Narita
0.024below expectation — took 61% of games against 67% expected
6-1, 4-6, 1-0
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.