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Colin O'Brien

Sterling Heights, MI
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
31 matches · 11W–20L · seasons 2021–2026

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Match history31 matches
L
2026-08-12 · PEACH-Mazur 7.5 COMBO MIX · #2 Doubles · 7.5 · with Elizabeth Mazurco
doesn’t count toward your NTRP rating
2-6, 2-6
L
2026-08-11 · PEACH-DeGuzman 18s 8.0X F · #2 Doubles · 8.0 · with Michelle Livingston
doesn’t count toward your NTRP rating
1-6, 0-6
L
2026-07-21 · PEACH-Itchon 18s 4.0M F4 · #1 Doubles · 4.0 · with MacIej Pietrowicz
expectation pending — we’re still fetching an opponent’s record
6-4, 3-6, 1-0
W
Victor Verma / Kim Baslockmixed
2026-07-17 · PEACH-DeGuzman 18s 8.0X F · #2 Doubles · 8.0 · with Michelle Livingston
doesn’t count toward your NTRP rating
7-6, 6-1
L
2026-07-10 · PEACH-Mazur 18s 7.0X F · #3 Doubles · 7.0 · with Gigi Oleson
doesn’t count toward your NTRP rating
7-5, 2-6, 0-1
W
2026-06-05 · PEACH-DeGuzman 18s 8.0X F · #3 Doubles · 8.0 · with Michelle Livingston
doesn’t count toward your NTRP rating
6-4, 7-6
W
Morgan Warner / Brad Terry
2026-06-02 · PEACH-Itchon 18s 4.0M F4 · #2 Doubles · 4.0 · with Al Itchon
expectation pending — we’re still fetching an opponent’s record
6-4, 2-6, 1-0
L
2026-05-29 · PEACH-Mazur 18s 7.0X F · #2 Doubles · 7.0 · with Gigi Oleson
doesn’t count toward your NTRP rating
4-6, 7-5, 0-1
W
Stephen Brooks / Mitchell Winowiecki
2026-05-19 · PEACH-Itchon 18s 4.0M F4 · #2 Doubles · 4.0 · with MacIej Pietrowicz
expectation pending — we’re still fetching an opponent’s record
7-6, 6-3
W
2026-04-11 · EAST-Horn LOW TRI MEN F · #1 Doubles · 4.0 · with Blaine Borchardt
doesn’t count toward your NTRP rating
7-6, 6-4
L
2026-04-10 · PEACH-KLUNGLE 40 MEN SINGLES F1 · #2 Singles · 8.0
doesn’t count toward your NTRP rating
4-6, 2-6
L
2026-02-15 · PEACH-KLUNGLE 40 MEN SINGLES F1 · #1 Singles · 8.0
doesn’t count toward your NTRP rating
2-6, 3-6
Where you rank locallyagainst everyone at your level
Teams13 teams · 2025–2026
EAST-Horn LOW TRI MEN F
2026 aSEM TRI-LEVEL - WINTER · 2026 Tri-Level Jan Low 4.0 3.5 3.0 Men SEM
2026
PEACH-DeGuzman 18s 8.0X F
2026 bSEM MIX SUMMER 18 & OVER · 8.0 SEM SUM MIX 18 & OVER · 18+
2026
PEACH-Itchon 18s 4.0M F4
2026 bSEM ADULT 18 & OVER NIGHT MEN · 4.0 MEN TUES PM SEM · 18+
2026
PEACH-KLUNGLE 40 MEN SINGLES F1
2026 aSEM WINTER TEAM SINGLES · 2026 MEN 4.0 WINTER SINGLES SEM
2026
PEACH-Klungle 4.0M Fall Singles F
2026 cSEM FALL TEAM SINGLES · MEN 4.0 SINGLES SEM
2026
PEACH-Mazur 18s 7.0X F
2026 bSEM MIX SUMMER 18 & OVER · 7.0 SEM SUM MIX 18 & OVER · 18+
2026
PEACH-Mazur 7.5 COMBO MIX
2026 bSEM COMBO MIXED AUGUST · 7.5 COMBO MIXED MON
2026
PEACH-White 7.5M Weekend Combo F
2026 cSEM FALL COMBO DOUBLES · MEN 75 COMBO SEM
2026
Over timerating by season, and how you rank
By level7 levels played
4.0
41.2%
7W–10L · 50.2% of games
5.0
1W–0L
not enough matches yet
7.5
0W–2L
not enough matches yet
8.0
0W–2L
not enough matches yet
7.0mixed
20%
1W–4L · 45% of games
7.5mixed
0W–1L
not enough matches yet
8.0mixed
2W–1L
not enough matches yet

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

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.

It’s one of the reasons why I like tennis so much. Because you have to figure it out on your own.
Roger Federer