Sebastian Decowski
“ Joker ”
Standout achievements
Sebastian Decowski is a Polish mixed martial artist with a professional record of 6-1 across 7 bouts. They've won 4 by KO/TKO, 2 by submission and 0 by decision — a 100 % finish rate. Most wins come by KO/TKO. Last competed April 2026 (active). Has fought most often in Poland (12 bouts).
Career timeline — fights by year
Frequently asked
What is Sebastian Decowski's MMA record?
Sebastian Decowski has a professional MMA record of 6-1 — 4 wins by KO/TKO, 2 by submission, 0 by decision.
How does Sebastian Decowski usually win?
They most often win by KO/TKO (4 of 6 wins).
How does Sebastian Decowski usually lose?
Most of Sebastian Decowski's losses come by decision (1 of 1).
Is Sebastian Decowski still active?
Sebastian Decowski last competed in April 2026, and is considered active (no bout in over two years).
What is Sebastian Decowski's fastest finish?
KO/TKO of Zoltan Segedi in 0:38 (Rd 1) at Strife 11 - Morelli vs. Korzeniowski.
Where is Sebastian Decowski from?
Sebastian Decowski is a Polish mixed martial artist.
What is Sebastian Decowski's longest MMA win streak?
Sebastian Decowski's longest winning run on record is 6 straight victories.
Pro MMA (7)
Amateur (9)
Amateur bouts — not counted toward the pro record.