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Jason Guillen

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Santa Ana, CA
4.5C year-end 2025
i
Computer — generated by the USTA algorithm from match play
149 matches · 82W–67L · seasons 2016–2026
Match history149 matches
W
2026-10-18 · Valley Royale · #1 Doubles · 4.5 · with SCOTT ZANON
loading the estimate
6-2, 6-3
L
2026-10-17 · Valley Royale · #1 Doubles · 4.5 · with Lance Heil
loading the estimate
3-6, 7-5, 0-1
L
2026-09-07 · Singles tourney
doesn’t count toward your NTRP rating
2-6, 2-6
L
Hector Coria
2026-08-23 · Singles tourney
doesn’t count toward your NTRP rating
6-7, 0-3
W
2026-08-22 · Singles tourney
doesn’t count toward your NTRP rating
6-3, 6-1
W
Eric Schantz
2026-08-21 · Singles tourney
doesn’t count toward your NTRP rating
6-0, 6-4
W
2026-08-21 · Singles tourney
doesn’t count toward your NTRP rating
6-2, 6-0
L
2026-06-21 · OC Cabrillo Santa Ana - Earl - Sun1 · #1 Doubles · 8.0 · with Daniel Riekes
loading the estimate
2-6, 4-6
W
2026-06-14 · OC Cabrillo Santa Ana - Earl - Sun1 · #1 Doubles · 8.0 · with Daniel Riekes
loading the estimate
3-6, 6-2, 1-0
L
James Lievers
2026-06-08 · Singles tourney
doesn’t count toward your NTRP rating
6-7, 1-6
W
Pedro Chou
2026-06-07 · Singles tourney
doesn’t count toward your NTRP rating
6-2, 6-1
W
2026-05-31 · Brotherly LV · #1 Doubles · 4.5 · with Jonah Buczewski
loading the estimate
4-6, 7-6, 1-0
Where you rank locallyagainst everyone at your level
Teams21 teams · 2019–2026
Over timerating by season, and how you rank
By level3 levels played
4.5
62.5%
35W–21L · 54.2% of games
8.0
66.7%
4W–2L · 57.3% of games
9.0
50%
3W–3L · 48.1% of games

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

By lineusually Singles, 54% of the time
Singles
54%
81 matches
#1 Doubles
11%
17 matches
#1 Singles
11%
17 matches
#2 Doubles
9%
13 matches
#3 Doubles
7%
11 matches
#2 Singles
7%
10 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.

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Billie Jean King