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Jason Guillen

Santa Ana, CA
4.5C year-end 2025
i
Computer — generated by the USTA algorithm from match play
15 matches · 8W–7L · seasons 2022–2026

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Match history15 matches
L
2026-06-21 · OC Cabrillo Santa Ana - Earl - Sun1 · #1 Doubles · 8.0 · with Daniel Riekes
expectation pending — we’re still fetching an opponent’s record
2-6, 4-6
W
Binh Nguyen / Linh Trinh
2026-06-14 · OC Cabrillo Santa Ana - Earl - Sun1 · #1 Doubles · 8.0 · with Daniel Riekes
expectation pending — we’re still fetching an opponent’s record
3-6, 6-2, 1-0
W
2026-05-31 · Brotherly LV · #1 Doubles · 4.5 · with Jonah Buczewski
expectation pending — we’re still fetching an opponent’s record
4-6, 7-6, 1-0
L
2026-05-16 · Brotherly LV · #2 Singles · 4.5
expectation pending — we’re still fetching an opponent’s record
0-6, 6-7
L
2026-05-09 · Brotherly LV · #2 Doubles · 4.5 · with Kieran Pisani
expectation pending — we’re still fetching an opponent’s record
6-4, 2-6, 0-1
W
James Lee / Richard Young
2026-05-03 · Brotherly LV · #1 Doubles · 4.5 · with Jonah Buczewski
expectation pending — we’re still fetching an opponent’s record
6-4, 7-6
W
2025-08-10 · OC LLW CMTC - Frank - Sat3 · #1 Doubles · 8.0 · with Jeffery Kam
expectation pending — we’re still fetching an opponent’s record
6-0, 6-3
W
2025-08-09 · OC LLW CMTC - Frank - Sat3 · #2 Doubles · 8.0 · with Quan Pham
expectation pending — we’re still fetching an opponent’s record
6-4, 6-3
L
2025-02-22 · #2 Doubles · 4.5 · with Mike Vieane
expectation pending — we’re still fetching an opponent’s record
2-6, 6-4, 0-1
W
John Lee / Ronald Nam
2025-02-08 · #2 Doubles · 4.5 · with Mike Vieane
expectation pending — we’re still fetching an opponent’s record
6-4, 7-5
L
2024-12-06 · #2 Doubles · 8.0 · with Eric van Hoven
expectation pending — we’re still fetching an opponent’s record
1-6, 6-2, 0-1
L
Noah Potts / Joe Stevenson
2024-05-25 · #2 Doubles · 4.5 · with Terry Briggs
expectation pending — we’re still fetching an opponent’s record
4-6, 6-1, 0-1
Where you rank locallyagainst everyone at your level
Teams17 teams · 2021–2026
Over timerating by season, and how you rank
By level2 levels played
4.5
50%
5W–5L · 49.7% of games
8.0
60%
3W–2L · 54.7% of games

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

By lineusually #1 Doubles, 47% of the time
#1 Doubles
47%
7 matches
#2 Doubles
40%
6 matches
#2 Singles
7%
1 match
#3 Doubles
7%
1 match

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.

Pressure is a privilege.
Billie Jean King