John Costello
33 matches · 12W–21L · seasons 2021–2026
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Match history33 matches
L
expectation pending — we’re still fetching an opponent’s record
4-6, 5-7
Teams9 teams · 2021–2026
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.
By lineusually #1 Doubles, 49% of the time
#1 Doubles
49%
16 matches
#1 Singles
18%
6 matches
#2 Doubles
18%
6 matches
#3 Doubles
9%
3 matches
#2 Singles
6%
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.
Tennis is a perfect combination of violent action taking place in an atmosphere of total tranquillity.