1-0
Pro W–L
Collin O'Brien is an American mixed martial artist with a professional record of 1-0 across 1 bouts. They've won 0 by KO/TKO, 1 by submission and 0 by decision — a 100 % finish rate. Last competed June 2026 (active).
Finish rate
100 %
Wins by
0 KO · 1 SUB · 0 DEC
Usually wins by
submission
Fastest win
1:20 (Rd 1)
vs Anderson Roberts
Last fought
Jun 2026 · Active
Frequently asked
What is Collin O'Brien's MMA record?
Collin O'Brien has a professional MMA record of 1-0 — 0 wins by KO/TKO, 1 by submission, 0 by decision.
How does Collin O'Brien usually win?
They most often win by submission (1 of 1 wins).
Is Collin O'Brien still active?
Collin O'Brien last competed in June 2026, and is considered active (no bout in over two years).
What is Collin O'Brien's fastest finish?
submission of Anderson Roberts in 1:20 (Rd 1) at K4 Fighting - Locked In.
Where is Collin O'Brien from?
Collin O'Brien is a American mixed martial artist.