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William Ko

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Arcadia, CA
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
96 matches · 66W–30L · seasons 2019–2026
Match history96 matches
W
2026-11-01 · SGV Maple Team-Lin-WN-SU10 · #3 Doubles · 4.0 · with Adrian Godjali
loading the estimate
6-3, 6-0
W
Default
2026-10-10 · SGV Maple Team-Lin-WN-SU10 · #3 Doubles · 4.0 · with Judd Tongprajiad
doesn’t count toward your NTRP rating
6-0, 6-0
L
2026-09-26 · SGV Maple Team-Lin-WN-SU10 · #2 Doubles · 4.0 · with Hao Truong
loading the estimate
3-6, 6-3, 0-1
W
2026-09-20 · SGV Maple Team-Lin-WN-SU10 · #2 Doubles · 4.0 · with Hao Truong
loading the estimate
6-2, 6-1
W
2026-09-05 · SGV Maple Team-Lin-WN-SA10 · #1 Doubles · 3.0 · with Justin Truong
loading the estimate
5-7, 6-3, 1-0
L
2026-07-25 · SGV Maple Team-Lin-WN-SA10 · #1 Doubles · 3.0 · with Rex Sheng
loading the estimate
4-6, 2-6
W
2026-03-29 · SGV Maple Team-Lin-WN-SU10 · #3 Doubles · 4.0 · with Judd Tongprajiad
loading the estimate
6-2, 7-5
W
2026-03-14 · SGV Maple Team-Lin-WN-SU10 · #2 Doubles · 4.0 · with Andrew Yao
loading the estimate
5-7, 7-5, 1-0
W
2026-02-16 · SGV Maple Team-Lin-WN-SU10 · #2 Doubles · 4.0 · with Andrew Yao
loading the estimate
6-3, 6-2
L
2025-03-23 · SFV LLW - Northridge Quakes - Steve Oetomo · #1 Doubles · 4.0 · with Nikhil Vasa
loading the estimate
7-5
W
2025-03-16 · SFV LLW - Northridge Quakes - Steve Oetomo · #1 Doubles · 4.0 · with Jason Nam
loading the estimate
6-3, 6-1
W
2025-02-09 · SGV Shadow's Aces-Kanemoto-Arroyo High/SU4 · #2 Doubles · 4.0 · with Judd Tongprajiad
loading the estimate
3-6, 6-1, 1-0
Where you rank locallyagainst everyone at your level
Teams46 teams · 2019–2026
Over timerating by season, and how you rank
By level6 levels played
3.0
1W–2L
not enough matches yet
4.0
76.5%
52W–16L · 59.9% of games
4.5
0%
0W–7L · 27.8% of games
8.0
0W–1L
not enough matches yet
7.0mixed
85.7%
6W–1L · 64.6% of games
8.0mixed
70%
7W–3L · 62.9% of games

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

By lineusually #2 Doubles, 41% of the time
#2 Doubles
41%
39 matches
#1 Doubles
31%
30 matches
#3 Doubles
23%
22 matches
#1 Singles
3%
3 matches
#2 Singles
2%
2 matches

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.

I really think a champion is defined not by their wins but by how they can recover when they fall.
Serena Williams