Johnny Walker Wins Heavyweight Debut With First‑Round Knee Knockout

Overview

• Johnny Walker moved up from light heavyweight and scored a first‑round knockout of Mick Parkin in his heavyweight debut at UFC 332 on Saturday, October 3, 2026.
• The finish came in a clinch when Walker landed a knee that struck Parkin flush and left him unconscious before he hit the canvas.
• Walker told broadcasters he moved divisions because repeated cuts to 205 pounds left him depleted and that he now fights naturally near 245 pounds.
• He credited training at Rey Sefo’s Porrada Training Center in Las Vegas and working with established heavyweights such as Alex Volkov for the timing of his jump to heavyweight.
• The quick, decisive win has been framed as a career reset that could boost Walker’s stamina, durability, and matchmaking options as he begins a new path in the heavyweight ranks.