John Heynoski
“ Game Dog ”
1-0
Pro W–L
Am 2–0
John Heynoski is an American mixed martial artist with a professional record of 1-0 across 1 bouts. They've won 1 by KO/TKO, 0 by submission and 0 by decision — a 100 % finish rate. Last competed November 2025 (active).
Finish rate
100 %
Wins by
1 KO · 0 SUB · 0 DEC
Usually wins by
KO/TKO
Fastest win
1:47 (Rd 1)
vs Cliff Jefferson
Last fought
Nov 2025 · Active
Frequently asked
What is John Heynoski's MMA record?
John Heynoski has a professional MMA record of 1-0 — 1 wins by KO/TKO, 0 by submission, 0 by decision.
How does John Heynoski usually win?
They most often win by KO/TKO (1 of 1 wins).
Is John Heynoski still active?
John Heynoski last competed in November 2025, and is considered active (no bout in over two years).
What is John Heynoski's fastest finish?
KO/TKO of Cliff Jefferson in 1:47 (Rd 1) at Bizzarro Promotions - Bayfront Brawl 18.
Where is John Heynoski from?
John Heynoski is a American mixed martial artist.
Pro MMA (1)
Amateur (2)
Amateur bouts — not counted toward the pro record.