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Cathryn Duffy

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Woodside, NY
3.0S year-end 2025
i
Self-rated, or a medical appeal
7 matches · 3W–4L · seasons 2026–2026
Match history7 matches
W
2026-08-16 · Metro: Mizumura/Kim · #4 Doubles · 3.0 · with Rena Amitay championship
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6-1, 6-2
L
2026-08-15 · Metro: Mizumura/Kim · #4 Doubles · 3.0 · with Miwako Smith championship
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3-6, 0-6
L
2026-08-14 · Metro: Mizumura/Kim · #4 Doubles · 3.0 · with Emiko Mizumura championship
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2-6, 0-6
L
2026-04-12 · Metro: Mizumura/Kim · #3 Doubles · 3.0 · with Diana Boruch
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3-6, 3-6
L
2026-03-29 · Metro: Mizumura/Kim · #3 Doubles · 3.0 · with Miwako Smith
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2-6, 7-6, 0-1
W
2026-02-06 · Metro: Mizumura/Kim · #3 Doubles · 3.0 · with Lilian Ching
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6-2, 6-1
W
2026-02-01 · Metro: Mizumura/Kim · #3 Doubles · 3.0 · with Emiko Mizumura
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6-2, 6-2
Where you rank locallyagainst everyone at your level
Teams1 team
Over timerating by season, and how you rank
By level1 level played
3.0
42.9%
3W–4L · 48.7% of games

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

By lineusually #3 Doubles, 57% of the time
#3 Doubles
57%
4 matches
#4 Doubles
43%
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.

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