Courtney Kosaka
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Aiea, HI
65 matches · 43W–22L · seasons 2025–2026
Match history65 matches
Where you rank locallyagainst everyone at your level
Teams13 teams · 2025–2026
Over timerating by season, and how you rank
By level6 levels played
3.5
84%
21W–4L · 62.2% of games
4.0
37.5%
3W–5L · 43.8% of games
7.0
40%
2W–3L · 53.6% of games
8.0
2W–1L
not enough matches yet
7.0mixed
56.2%
9W–7L · 53.8% of games
8.0mixed
75%
6W–2L · 59% of games
Games won matters more than matches won — NTRP adjusts on margins.
By lineusually #1 Singles, 28% of the time
#1 Singles
28%
18 matches
#1 Doubles
20%
13 matches
#2 Doubles
17%
11 matches
#1 Female Doubles
12%
8 matches
#1 Mixed Doubles
12%
8 matches
#3 Doubles
6%
4 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.
Every match is a story with a beginning, a middle and an end, and you are writing it as you go.