Johnny Walker Destroys Mick Parkin With Knee KO in Heavyweight Debut

Johnny Walker made a statement in his heavyweight debut at UFC 332. The former light heavyweight contender knocked out Mick Parkin with a devastating clinch knee in the first round at the Delta Center in Salt Lake City on Saturday night, per Yahoo Sports.

Walker, 34, caught Parkin with a knee from the Thai clinch that left the Englishman out cold on the canvas at 3:35 of the opening round. The finish drew an eruption from the Salt Lake City crowd and immediately put the heavyweight division on notice.

The Brazilian had spent his entire UFC career at 205 pounds, compiling an 8-7 record with one no-contest since joining the promotion in 2018. His move to heavyweight was driven by the toll of cutting weight, something Walker addressed bluntly after the fight.

"I nerfed myself at light heavyweight. I lost muscle mass, I dehydrated my brain, everything," Walker said. "I don't think there's any heavyweight that can fight like me."

At 6-foot-5 with an 82-inch reach, Walker has always been built more like a heavyweight than a light heavyweight. The question was never whether he had the size but whether the added weight would take away the speed and explosiveness that made him a highlight-reel machine at 205. Saturday's answer was emphatic.

Parkin, who entered the fight at 10-1, had been building momentum with a four-fight winning streak before consecutive losses to Marcin Tybura and now Walker. The Englishman simply had no answer for Walker's length and timing from the clinch.

Where Walker goes from here is the interesting part. The heavyweight division is thin enough that a few more finishes like this one could fast-track him into contender status at a weight class where he clearly belongs.