Brennon Mellgren
“The Marshall”
Standout achievements
Brennon Mellgren is an American mixed martial artist with a professional record of 4-2 across 6 bouts. They've won 2 by KO/TKO, 2 by submission and 0 by decision — a 100 % finish rate. Most wins come by submission. Last competed September 2025 (active). Has fought most often in United States (6 bouts).
Fight locations (2 venues)
Career timeline — fights by year
Frequently asked
What is Brennon Mellgren's MMA record?
Brennon Mellgren has a professional MMA record of 4-2 — 2 wins by KO/TKO, 2 by submission, 0 by decision.
How does Brennon Mellgren usually win?
They most often win by submission (2 of 4 wins).
How does Brennon Mellgren usually lose?
Most of Brennon Mellgren's losses come by decision (1 of 2).
Is Brennon Mellgren still active?
Brennon Mellgren last competed in September 2025, and is considered active (no bout in over two years).
What is Brennon Mellgren's fastest finish?
KO/TKO of Nick Winters in 0:53 (Rd 1) at 3RT - 3 River Throwdown 18.
Where is Brennon Mellgren from?
Brennon Mellgren is a American mixed martial artist.
What is Brennon Mellgren's longest MMA win streak?
Brennon Mellgren's longest winning run on record is 3 straight victories.
Pro MMA (6)
Amateur (3)
Amateur bouts — not counted toward the pro record.