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John Callahan

year-end
40 matches · 20W–20L · seasons 20232026

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Match history40 matches
W
2026-08-24 · Hamilton · #3 Doubles · 2.5 · with Rob Armstrong
expectation pending — we’re still fetching an opponent’s record
6-4, 6-3
L
2026-08-23 · Elverhoy · #2 Doubles · 8.0 · with Cheryl Perlmutter
doesn’t count toward your NTRP rating
3-6, 4-6
W
2026-08-17 · Hamilton · #3 Doubles · 2.5 · with William Gregerson
expectation pending — we’re still fetching an opponent’s record
6-4, 6-7, 1-0
L
2026-08-10 · Hamilton · #3 Doubles · 2.5 · with Stuart Friess
expectation pending — we’re still fetching an opponent’s record
5-7, 4-6
W
2026-08-08 · Hamilton · #3 Doubles · 2.5 · with Rob Armstrong
expectation pending — we’re still fetching an opponent’s record
6-3, 4-6, 1-0
L
Heidy Weicht / John Nashmixed
2026-08-02 · Elverhoy · #1 Doubles · 8.0 · with Mary Hartman
doesn’t count toward your NTRP rating
3-6, 6-3, 0-1
W
Joseph Delsignore / Lisa Campbellmixed
2026-07-12 · Elverhoy · #3 Doubles · 8.0 · with Cheryl Perlmutter
doesn’t count toward your NTRP rating
6-3, 6-4
W
2026-06-28 · Elverhoy · #1 Doubles · 8.0 · with Mary Hartman
doesn’t count toward your NTRP rating
6-4, 2-5, 1-0
L
Michael Ho / Jacob Purcell
2026-04-26 · Deuchler/Wolf (S) · #2 Doubles · 4.0 · with Tim Woerther
expectation pending — we’re still fetching an opponent’s record
3-6, 6-7
L
2026-04-19 · Deuchler/Wolf (S) · #1 Doubles · 4.0 · with Edward Bourneuf
expectation pending — we’re still fetching an opponent’s record
4-6, 6-7
L
Keith Allison / Scott Harris
2026-03-29 · Deuchler/Wolf (S) · #1 Doubles · 4.0 · with Edward Bourneuf
expectation pending — we’re still fetching an opponent’s record
7-6, 3-6, 0-1
L
2026-03-22 · Deuchler/Wolf (S) · #2 Doubles · 4.0 · with Benjamin Rafetto
expectation pending — we’re still fetching an opponent’s record
4-6, 3-6
Teams10 teams · 2023–2026
Over timerating by season, and how you rank
By level4 levels played
2.5
75%
3W–1L · 52.9% of games
3.5
64.7%
11W–6L · 55% of games
4.0
16.7%
2W–10L · 44.1% of games
8.0mixed
57.1%
4W–3L · 50.7% 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.

Pressure is a privilege.
Billie Jean King