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John O'Sullivan

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Naples, FL
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
14 matches · 3W–11L · seasons 2019–2026
Match history14 matches
L
2026-02-18 · Isles Of Collier / C. Young · #2 Doubles · 8.0 · with Ken Walter
loading the estimate
4-6, 5-7
W
2026-02-11 · Isles Of Collier / C. Young · #2 Doubles · 8.0 · with Jonathan Kaylor
loading the estimate
3-6, 7-6, 1-0
L
2026-02-04 · Isles Of Collier / C. Young · #2 Doubles · 8.0 · with Richard Lewis
loading the estimate
1-6, 3-6
L
2026-01-21 · Isles Of Collier / C. Young · #1 Doubles · 8.0 · with Joseph Kardek
loading the estimate
2-6, 4-6
L
2025-02-11 · Naples Grande / Tarantino · #2 Doubles · 8.0 · with Paul Bordeau
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
1-6, 2-6
L
2025-02-04 · Naples Grande / Tarantino · #2 Doubles · 8.0 · with Steven Cohen
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
0-6, 1-6
L
2025-01-28 · Naples Grande / Tarantino · #2 Doubles · 8.0 · with Steven Cohen
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
5-7, 4-6
L
2025-01-14 · Naples Grande / Tarantino · #1 Doubles · 8.0 · with Heiko Osterchrist
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
1-6, 3-6
L
2025-01-07 · Naples Grande / Tarantino · #1 Doubles · 8.0 · with Richard Tarantino
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
2-6, 1-6
L
2019-03-13 · Treviso Bay - O'Sullivan · #3 Doubles · 4.0 · with Daniel Toppin
loading the estimate
2-6, 3-6
W
2019-03-06 · Treviso Bay - O'Sullivan · #2 Doubles · 4.0 · with Michael Stein
loading the estimate
6-3, 4-6, 1-0
W
2019-01-30 · Treviso Bay - O'Sullivan · #3 Doubles · 4.0 · with David Spahn
loading the estimate
6-4, 6-0
Where you rank locallyagainst everyone at your level
Teams3 teams · 2019–2026
Over timerating by season, and how you rank
By level2 levels played
4.0
40%
2W–3L · 46.6% of games
8.0
11.1%
1W–8L · 31.2% of games

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

By lineusually #2 Doubles, 57% of the time
#2 Doubles
57%
8 matches
#1 Doubles
21%
3 matches
#3 Doubles
21%
3 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.

Losing is not my enemy. Fear of losing is my enemy.
Rafael Nadal