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Johnny Walker Flattens Mick Parkin in One Round on Heavyweight Debut

Walker needed less than a round to land a knee KO at UFC 332, and his peers are already floating a Poatan superfight.

By FightSplit Editorial Team · Published Oct 3, 2026

Johnny Walker celebrating a knockout win inside the UFC octagon
FightSplit

Johnny Walker didn't ease into heavyweight. At UFC 332 in Salt Lake City, the Brazilian needed less than a single round to end Mick Parkin's night, landing a vicious knee for the knockout on his debut above 205 pounds. It was exactly the kind of statement that built his reputation in the first place.

Walker carries a 22-10 record with 17 knockouts into his new division, and this one came on the heels of a rough patch — a split-decision loss to Dominick Reyes was his last outing as a ranked No. 12 light heavyweight. One quick finish, and the conversation shifted completely.

The Peers Are Dreaming Big

Afterward, Walker made no attempt at modesty, claiming the best is still ahead and that nobody in the heavyweight division fights the way he does. His fellow fighters ran with it. Former welterweight champ Belal Muhammad posted that he'd seen enough and wanted Walker versus Pereira. Veteran Renato Moicano went further, suggesting the UFC just hand Walker the belt.

The Pereira line is the eye-catcher. Alex Pereira sits at 13-4 (11 KO) and is ranked No. 3 at light heavyweight, though he's coming off a second-round KO loss to Ciryl Gane. A Walker-Poatan matchup would pit two of the division's most explosive strikers against each other — the kind of fight that sells itself, even if it's nowhere near booked.

What It Actually Means

Let's keep the enthusiasm honest. Walker is one heavyweight win deep, and Pereira's name has been floating around different weight classes himself. Still, the move up makes sense for a fighter whose power always traveled well and whose chin struggled at 205. Heavyweight rewards exactly what Walker brings: speed, reach, and the ability to end a fight with one shot.

For now, the booking that matters is the one Walker just completed. A sub-one-round knee KO is a loud way to introduce yourself to a new division. Whether it leads to Poatan or anyone else, Walker did the only thing he could control — he looked like a problem.

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