Standout achievements
Stephen Costello is an Irish mixed martial artist with a professional record of 6-4 across 10 bouts. They've won 2 by KO/TKO, 2 by submission and 2 by decision — a 67 % finish rate. Most wins come by decision. Last competed June 2026 (active). Has fought most often in Ireland (5 bouts).
Fight locations (6 venues)
Career timeline — fights by year
Frequently asked
What is Stephen Costello's MMA record?
Stephen Costello has a professional MMA record of 6-4 — 2 wins by KO/TKO, 2 by submission, 2 by decision.
How does Stephen Costello usually win?
They most often win by decision (2 of 6 wins).
How does Stephen Costello usually lose?
Most of Stephen Costello's losses come by submission (2 of 4).
Is Stephen Costello still active?
Stephen Costello last competed in June 2026, and is considered active (no bout in over two years).
What is Stephen Costello's fastest finish?
KO/TKO of Martin Antevski in 0:58 (Rd 1) at CFC Malta 8 - Centurion Fight Championship 8: New Era.
Where is Stephen Costello from?
Stephen Costello is a Irish mixed martial artist.
What is Stephen Costello's longest MMA win streak?
Stephen Costello's longest winning run on record is 3 straight victories.
Where does Stephen Costello rank in MMA?
Stephen Costello sits at #14,621 of 32,631 fighters in the Fight Forensics global MMA rankings.
Pro MMA (10)
Amateur (8)
Amateur bouts — not counted toward the pro record.