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Katsuya Ishimaru

— year-end
11 matches · 5W–6L · seasons 2025–2026

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Match history11 matches
W
2026-08-30 · BC-ErnieHowlett/TakTakeda8.0 · #2 Doubles · 8.0 · with Chiaki Maeda mixed
doesn’t count toward your NTRP rating
6-2, 6-3
L
2026-07-11 · BC-ErnieHowlett/TakTakeda8.0 · #2 Doubles · 8.0 · with Reiko Sasagawa mixed
doesn’t count toward your NTRP rating
2-6, 4-6
W
2026-05-30 · BC-ErnieHowlett/JunichiYamayoshi4.0 · #1 Doubles · 4.0 · with HAYATO NISHIGUCHI
expectation pending — we’re still fetching an opponent’s record
2-6, 6-4, 1-0
W
2026-05-23 · BC-ErnieHowlett/JunichiYamayoshi4.0 · #1 Doubles · 4.0 · with Dex Yamanashi
expectation pending — we’re still fetching an opponent’s record
6-4, 3-6, 1-0
W
Jose Uribe / David Chun
2026-05-02 · BC-ErnieHowlett/JunichiYamayoshi4.0 · #1 Doubles · 4.0 · with Takahiro Ohara
expectation pending — we’re still fetching an opponent’s record
6-3, 7-6
L
2026-04-25 · BC-ErnieHowlett/JunichiYamayoshi4.0 · #1 Doubles · 4.0 · with Justin Truong
expectation pending — we’re still fetching an opponent’s record
3-6, 4-6
L
2026-03-21 · BC-ErnieHowlett/JunichiYamayaoshi · #1 Doubles · 4.0 · with Tak Takeda
expectation pending — we’re still fetching an opponent’s record
6-4, 3-6, 1-0
L
2026-03-01 · BC-ErnieHowlett/JunichiYamayaoshi · #1 Doubles · 4.0 · with Kentaro Sakamoto
expectation pending — we’re still fetching an opponent’s record
4-6, 6-7
L
2026-02-14 · BC-ErnieHowlett/JunichiYamayaoshi · #1 Doubles · 4.0 · with Brian Higa
expectation pending — we’re still fetching an opponent’s record
7-5, 3-6, 1-0
L
2025-02-15 · #1 Doubles · 4.0 · with Junichi Yamayoshi
expectation pending — we’re still fetching an opponent’s record
5-7, 6-4, 0-1
W
2025-02-09 · #1 Doubles · 4.0 · with John Magome
expectation pending — we’re still fetching an opponent’s record
6-7, 7-5, 1-0
Teams9 teams · 2023–2026
Over timerating by season, and how you rank
By level2 levels played
4.0
44.4%
4W–5L · 49% of games
8.0mixed
1W–1L
not enough matches yet

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

By lineusually #1 Doubles, 82% of the time
#1 Doubles
82%
9 matches
#2 Doubles
18%
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.

Success is a journey, not a destination. The doing is often more important than the outcome.
Arthur Ashe