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David Kumasaka

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Flagstaff, AZ
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
99 matches · 28W–71L · seasons 2018–2026
Match history99 matches
L
2026-10-03 · #3 Doubles · 4.0 · with Esther Spravzoff mixed championship
doesn’t count toward your NTRP rating
1-6, 1-6
W
2026-08-01 · NAZ/Unrein/40 &over/8.0mixed · #2 Doubles · 4.0 · with Serena Unrein mixed
doesn’t count toward your NTRP rating
6-2, 6-2
W
2026-07-12 · NAZ/Unrein/40 &over/8.0mixed · #3 Doubles · 4.0 · with Esther Spravzoff mixed
doesn’t count toward your NTRP rating
6-0, 6-2
L
2026-06-13 · NAZ/Vallen/18&over/4.0mixed · #1 Doubles · 4.0 · with Serena Unrein mixed
doesn’t count toward your NTRP rating
2-6, 6-2, 0-1
W
Default
2026-05-30 · NAZ/Vallen/18&over/4.0mixed · #3 Doubles · 4.0 · with Joanna Cook mixed
doesn’t count toward your NTRP rating
6-0, 6-0
L
2026-05-02 · NAZ/Vallen/18&over/4.0mixed · #3 Doubles · 4.0 · with Joanna Cook mixed
doesn’t count toward your NTRP rating
4-6, 6-4, 0-1
L
2026-03-14 · Kumasaka · #3 Doubles · 4.0 · with Jim Haslett
loading the estimate
2-6, 2-6
L
2026-02-28 · Kumasaka · #2 Doubles · 4.0 · with Steven Riggs
loading the estimate
3-6, 4-6
W
2026-02-28 · Kumasaka · #2 Doubles · 4.0 · with Blake Cain
loading the estimate
6-3, 5-7, 1-0
W
2026-02-27 · Kumasaka · #3 Doubles · 4.0 · with Jim Haslett
loading the estimate
2-6, 6-4, 1-0
W
2026-01-18 · Kumasaka · #3 Doubles · 4.0 · with Jim Haslett
loading the estimate
6-1, 5-7, 1-0
W
2025-11-15 · Webb · #1 Doubles · 3.0 · with Keiji Iwai
loading the estimate
6-1, 7-6
Where you rank locallyagainst everyone at your level
Teams26 teams · 2019–2026
Over timerating by season, and how you rank
By level6 levels played
2.5
0W–1L
not enough matches yet
3.0
25%
1W–3L · 45.9% of games
4.0
24.2%
15W–47L · 40.6% of games
8.0
66.7%
4W–2L · 54.2% of games
4.0mixed
50%
3W–3L · 59.6% of games
8.0mixed
41.7%
5W–7L · 48.9% of games

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

By lineusually #3 Doubles, 42% of the time
#3 Doubles
42%
42 matches
#2 Doubles
30%
30 matches
#1 Doubles
16%
16 matches
Singles
8%
8 matches
#1 Singles
2%
2 matches
#2 Singles
1%
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.

What matters isn’t how well you play when you’re playing well. What matters is how well you play when you’re playing badly.
Martina Navratilova