Jason Duval-Masson is a French mixed martial artist with a professional record of 4-5 across 9 bouts. They've won 3 by KO/TKO, 0 by submission and 1 by decision — a 75 % finish rate. Most wins come by KO/TKO. Currently on a 3-fight skid. Last competed March 2026 (active). Has fought most often in France (8 bouts).
Career timeline — fights by year
Frequently asked
What is Jason Duval-Masson's MMA record?
Jason Duval-Masson has a professional MMA record of 4-5 — 3 wins by KO/TKO, 0 by submission, 1 by decision.
How does Jason Duval-Masson usually win?
They most often win by KO/TKO (3 of 4 wins).
How does Jason Duval-Masson usually lose?
Most of Jason Duval-Masson's losses come by submission (3 of 5).
Is Jason Duval-Masson still active?
Jason Duval-Masson last competed in March 2026, and is considered active (no bout in over two years).
What is Jason Duval-Masson's fastest finish?
KO/TKO of Mamadou Bayo in 5:53 (Rd 2) at MMA Amateurs - Challengers.
Where is Jason Duval-Masson from?
Jason Duval-Masson is a French mixed martial artist.
What is Jason Duval-Masson's longest MMA win streak?
Jason Duval-Masson's longest winning run on record is 4 straight victories.
Where does Jason Duval-Masson rank in MMA?
Jason Duval-Masson sits at #23,740 of 32,631 fighters in the Fight Forensics global MMA rankings.