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John Costello

— year-end
33 matches · 12W–21L · seasons 2021–2026

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Match history33 matches
L
2026-05-08 · SFT:Spark Red:Sideman · #2 Doubles · 8.0 · with Sally Woolston
doesn’t count toward your NTRP rating
3-6, 2-6
L
2026-05-01 · SFT:Spark Red:Sideman · #2 Doubles · 8.0 · with Sally Woolston
doesn’t count toward your NTRP rating
6-4, 3-6, 0-1
W
2026-04-24 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Amanda Lubarsky
doesn’t count toward your NTRP rating
6-3, 6-1
L
2026-04-24 · SFT:Spark Red:Sideman · #2 Doubles · 8.0 · with Sally Woolston
doesn’t count toward your NTRP rating
0-6, 2-6
W
2026-04-03 · SFT:Spark Red:Sideman · #2 Doubles · 8.0 · with Sally Woolston
doesn’t count toward your NTRP rating
7-5, 6-0
L
2026-03-27 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Amanda Lubarsky
doesn’t count toward your NTRP rating
6-4, 3-6, 1-0
L
2026-02-27 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Karen Carney
doesn’t count toward your NTRP rating
6-2, 4-6, 0-1
W
2026-02-13 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Karen Carney
doesn’t count toward your NTRP rating
6-2, 6-3
W
2026-01-16 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Karen Carney
doesn’t count toward your NTRP rating
7-5, 4-6, 1-0
L
2026-01-02 · WTC:Winners:Matteuzzi/Hirsch · #1 Doubles · 7.0 · with Kirsten Walley
doesn’t count toward your NTRP rating
1-6, 6-7
L
2025-07-01 · SFT:Spark:Srivatsan/Moon · #1 Doubles · 3.5 · with Khurrum Ahmad
expectation pending — we’re still fetching an opponent’s record
4-6, 5-7
W
2025-06-10 · SFT:Spark:Srivatsan/Moon · #2 Singles · 3.5
expectation pending — we’re still fetching an opponent’s record
6-3, 6-0
Teams7 teams · 2023–2026
SFT:Spark Red:Sideman
2026 EMA Mixed 18 & Over · 8.0 Mixed · 18+
2026
WTC:Winners:Matteuzzi/Hirsch
2026 EMA Mixed 18 & Over · 7.0 Mixed · 18+
2026
Over timerating by season, and how you rank
By level3 levels played
3.5
42.9%
6W–8L · 52.6% of games
7.0mixed
33.3%
5W–10L · 50.2% of games
8.0mixed
25%
1W–3L · 42% 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.

Tennis is a perfect combination of violent action taking place in an atmosphere of total tranquillity.
Billie Jean King