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William Ko

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PEACHTREE CORNERS, GA
4.0S year-end 2025
i
Self-rated, or a medical appeal
24 matches · 8W–16L · seasons 2023–2026
Match history24 matches
L
2026-06-13 · Singles tourney
doesn’t count toward your NTRP rating
1-6, 1-6
W
Austin York
2026-06-13 · Singles tourney
doesn’t count toward your NTRP rating
6-4, 6-1
L
Bryce Waterman
2026-06-12 · Singles tourney
doesn’t count toward your NTRP rating
4-6, 5-7
L
2026-03-08 · Singles tourney
doesn’t count toward your NTRP rating
5-7, 6-7
W
2026-03-07 · Singles tourney
doesn’t count toward your NTRP rating
6-3, 3-6, 1-0
W
2026-03-07 · Singles tourney
doesn’t count toward your NTRP rating
6-4, 7-6
L
2025-07-26 · Singles tourney
doesn’t count toward your NTRP rating
2-4, 1-4
L
2025-07-26 · Singles tourney
doesn’t count toward your NTRP rating
4-5, 1-4
L
Matthew Martin
2025-07-26 · Singles tourney
doesn’t count toward your NTRP rating
4-5, 0-4
L
2024-11-09 · Singles tourney
doesn’t count toward your NTRP rating
4-6, 5-7
L
Jeff Hilimire
2024-11-08 · Singles tourney
doesn’t count toward your NTRP rating
4-6, 6-3, 0-1
L
2024-03-15 · Lifetime (Joey Castillo)* · #1 Doubles · 4.0 · with Helen Li mixed
doesn’t count toward your NTRP rating
7-5, 3-6, 0-1
Where you rank locallyagainst everyone at your level
Teams3 teams · 2024–2027
Over timerating by season, and how you rank
By level2 levels played
4.0mixed
0W–1L
not enough matches yet
4.5mixed
1W–0L
not enough matches yet

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

By lineusually Singles, 92% of the time
Singles
92%
22 matches
#1 Doubles
4%
1 match
#2 Doubles
4%
1 match

How often, across every team and every match we hold — including ones that do not count toward a rating. Advanced stats has a court-position table too, and it answers a different question: how well you do there, over matches that count. A team’s own page shows how that one team uses you.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.

Experience is a big word. I think it comes with time, and I have that.
Serena Williams