Jack Krupinski
Add to scout listFree account. Monday email when they play.
San Francisco, CA
15 matches · 13W–2L · seasons 2026–2026
Match history15 matches
L
Felipe Zamora
doesn’t count toward your NTRP rating
0-6
W
Andrew Ng
doesn’t count toward your NTRP rating
6-0
Where you rank locallyagainst everyone at your level
Teams3 teams · 2026–2026
Over timerating by season, and how you rank
By level3 levels played
3.5
100%
4W–0L · 71.4% of games
7.5
100%
4W–0L · 75.4% of games
7.0mixed
80%
4W–1L · 63.2% of games
Games won matters more than matches won — NTRP adjusts on margins.
By lineusually #1 Doubles, 33% of the time
#1 Doubles
33%
5 matches
#2 Doubles
27%
4 matches
#1 Singles
13%
2 matches
#3 Doubles
13%
2 matches
Singles
13%
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 mostly mental. You win or lose the match before you even go out there.