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Song Ko

Issaquah, WA
4.0C year-end 2025
182 matches · 90W–92L · 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.

3.69
estimated dynamic rating
Where the rating sits now, on 24 matches this season · USTA never publishes this number
1%
down to 3.5
99%
stay 4.0
0%
up to 4.5

A 4.0 runs from 3.51 to 4.00. This rating sits in the lower half 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
Issaquah · 4.0
8 of 11
WA · 4.0
365 of 782

Song 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

Song has been 4.0 for all 8 seasons on record, but moved a long way inside it — from the middle of the band to the top.

3.54.020192020202120222023202420252026

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, Song has gone from the 51st to the 63rd percentile of players at that level, 2020 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
65.3%
47W–25L · 54% of games
4.5
21.8%
12W–43L · 39.6% of games
7.0mixed
66.7%
26W–13L · 55.7% of games
8.0mixed
37.5%
3W–5L · 45.7% of games
9.0mixed
0W–3L
not enough matches yet

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

Match history182 matches
L
2026-07-18 · #3 Doubles · 8.0 · with Renee Waltz
+0.000below expectation — took 41% of games against 52% expected
6-2, 6-7, 1-0
L
Timur Sadykov / Elnaz Ansarimixed
2026-07-12 · #3 Doubles · 7.0 · with Alina Galan
+0.000better than expected — took 59% of games against 54% expected
6-4, 0-6, 1-0
W
2026-07-05 · #3 Doubles · 8.0 · with Renee Waltz
+0.000below expectation — took 43% of games against 53% expected
1-6, 7-6, 1-0
L
2026-06-13 · #2 Doubles · with Wesley Lew
−0.000about as expected — took 33% of games against 38% expected
6-3, 6-3
L
2026-06-06 · #3 Doubles · 4.5 · with Travis Terry
−0.060below expectation — took 20% of games against 51% expected
6-2, 6-1
W
2026-06-06 · #3 Doubles · 4.0 · with Shaurya Bairaria
+0.009about as expected — took 53% of games against 49% expected
6-3, 3-6, 1-0
L
2026-05-09 · #3 Doubles · 4.0 · with Shaurya Bairaria
−0.003about as expected — took 39% of games against 42% expected
4-6, 6-1, 1-0
L
2026-05-08 · #3 Doubles · 4.5 · with Kevin Larson
+0.012better than expected — took 50% of games against 44% expected
7-6, 4-6, 1-0
L
Tyler Parsons / DHARAM PATULE
2026-05-03 · #3 Doubles · 4.0 · with Daniel Hidalgo
−0.061below expectation — took 20% of games against 52% expected
6-0, 6-3
L
Noah Neubauer / Peyton Menti
2026-04-25 · #3 Doubles · 4.5 · with Kevin Larson
−0.065below expectation — took 0% of games against 39% expected
6-0, 6-0
W
Jaesang Yoo / Derek Lee
2026-04-18 · #3 Doubles · 4.0 · with Shaurya Bairaria
−0.008about as expected — took 57% of games against 59% expected
7-6, 6-4
W
2026-04-04 · #3 Doubles · 4.0 · with Jordan Bluehdorn
+0.009better than expected — took 71% of games against 63% expected
6-2, 4-2
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.

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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.