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Warren Koss

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San Mateo, CA
3.5S year-end 2026
i
Self-rated, or a medical appeal
2 matches · 0W–2L · seasons 2022–2022
Match history2 matches
L
2022-01-14 · SUNNYVALE TC/SUNNYVALE MTC 65AM7.0C · #3 Doubles · 7.0 · with Jeffrey Peterson
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
2022-01-12 · SUNNYVALE TC/SUNNYVALE MTC 65AM7.0C · #3 Doubles · 7.0 · with Michael Smith
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, 3-6
Where you rank locallyagainst everyone at your level
Teams4 teams · 2020–2022
Over timerating by season, and how you rank
By level1 level played
7.0
0W–2L
not enough matches yet

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

By line2 matches with a court position
#3 Doubles
2
not enough matches yet

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.

Champions keep playing until they get it right.
Billie Jean King