Colleen Callahan
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Littleton, CO
166 matches · 63W–103L · seasons 2019–2026
Match history166 matches
Where you rank locallyagainst everyone at your level
Teams42 teams · 2019–2026
Over timerating by season, and how you rank
By level6 levels played
0.0
1W–1L
not enough matches yet
2.5
50.5%
49W–48L · 48.9% of games
3.0
13%
3W–20L · 35.1% of games
5.5mixed
23.1%
3W–10L · 44.1% of games
6.0mixed
21.4%
6W–22L · 38.2% of games
6.5mixed
1W–2L
not enough matches yet
Games won matters more than matches won — NTRP adjusts on margins.
By lineusually #1 Singles, 56% of the time
#1 Singles
56%
93 matches
#1 Doubles
20%
33 matches
#2 Doubles
13%
22 matches
#3 Doubles
7%
11 matches
#2 Singles
3%
5 matches
#1 Female Doubles
1%
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.
What matters isn’t how well you play when you’re playing well. What matters is how well you play when you’re playing badly.