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Courtney Kosaka

Aiea, HI
3.5C year-end 2025
i
Computer — generated by the USTA algorithm from match play
58 matches · 38W–20L · seasons 20252026

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Match history58 matches
W
2026-08-02 · Aiya · #1 Doubles · 3.5 · with Jennifer Chan
expectation pending — we’re still fetching an opponent’s record
6-0, 6-2
W
2026-07-26 · For Hits and Giggles · #1 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
6-3, 6-4
L
2026-07-12 · Aiya · #1 Doubles · 3.5 · with Jennifer Chan
expectation pending — we’re still fetching an opponent’s record
5-7, 6-4, 0-1
W
2026-06-21 · Aiya · #1 Doubles · 3.5 · with JUDY Guo
expectation pending — we’re still fetching an opponent’s record
6-2, 6-4
W
2026-06-06 · Aces · #1 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
6-4, 6-2
L
2026-06-06 · Hot Shots 18+ · #3 Doubles · 4.0 · with Charlene Dannenberg
expectation pending — we’re still fetching an opponent’s record
2-6, 7-6, 0-1
W
2026-06-05 · Aces · #2 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
7-5, 6-2
W
2026-05-30 · Aces · #1 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
6-4, 3-6, 1-0
L
2026-05-23 · Hot Shots 18+ · #2 Doubles · 4.0 · with Charlene Dannenberg
expectation pending — we’re still fetching an opponent’s record
0-6, 0-6
W
2026-05-16 · Aces · #2 Doubles · 3.5 · with Luca Breslau
expectation pending — we’re still fetching an opponent’s record
6-2, 2-0
W
2026-05-16 · Hot Shots 18+ · #2 Doubles · 4.0 · with Amy Umetsu
expectation pending — we’re still fetching an opponent’s record
6-2, 6-4
W
2026-05-09 · Aces · #1 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
6-1, 6-3
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
83.3%
20W–4L · 61.7% of games
4.0
37.5%
3W–5L · 43.8% of games
7.0
50%
2W–2L · 55.4% of games
8.0
100%
4W–0L · 68.6% of games
7.0mixed
45.5%
5W–6L · 51.4% of games
8.0mixed
75%
3W–1L · 56.2% of games

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

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.
Chris Evert