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Jan Kosta

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Ann Arbor, MI
2.5S year-end 2025
i
Self-rated, or a medical appeal
5 matches · 1W–4L · seasons 2022–2026
Match history5 matches
L
2026-07-24 · RCAA-Moore 18s 6.0X F · #3 Doubles · 6.0 · with Ari Shwayder mixed
loading the estimate
3-6, 1-6
W
2026-06-19 · RCAA-Moore 18s 6.0X F · #2 Doubles · 6.0 · with Ari Shwayder mixed
loading the estimate
6-4, 6-7, 1-0
L
2025-07-11 · 5RCAA-LOH 60MIX 18&O SEM F3 · #3 Doubles · 6.0 · with Lee Benjamin mixed
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.
3-6, 5-7
L
2023-07-21 · 3RCAA-LOH MIX18&O 60 SEM F1 · #3 Doubles · 6.0 · with Christopher Couch mixed
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.
6-7, 6-2, 0-1
L
2022-07-22 · 1RCAA-FOLEY 6.0 18&O MIXED SEM F2 · #2 Doubles · 6.0 · with Jeremy Konheim mixed
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, 4-6
Where you rank locallyagainst everyone at your level
Teams5 teams · 2022–2026
Over timerating by season, and how you rank
By level1 level played
6.0mixed
20%
1W–4L · 42% of games

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

By lineusually #3 Doubles, 60% of the time
#3 Doubles
60%
3 matches
#2 Doubles
40%
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.

I don’t want to be somebody else. I want to be myself and win in my way.
Rafael Nadal