Johnny Walker defeated Mick Parkin via first-round KO (knee) at 3:35 of Round 1 in his heavyweight debut. The finish came on the UFC 332 card at the Delta Center in Salt Lake City. Parkin was left unconscious by the strike.
Johnny Walker made a statement in his first fight at heavyweight, knocking out Mick Parkin with a knee at 3:35 of the opening round at UFC 332 on Saturday. The finish came at the Delta Center in Salt Lake City and left Parkin unconscious.
Walker, 34, arrived in the weight class carrying a 22-10 record and a No. 13 ranking at light heavyweight. The Brazilian trains out of SBG Ireland and stands six-foot-six with an 82-inch reach. He lands 4.06 significant strikes per minute at 55 percent accuracy, and he averages 0.8 submission attempts per 15 minutes. That striking efficiency was on display in a bout that never made it out of the first round.
Parkin, 31, entered with a 10-1 record and represents England, fighting out of TFT MMA. The orthodox heavyweight is six-foot-four with a 79-inch reach. He lands 4.7 significant strikes per minute at 50 percent accuracy and averages 1.38 takedowns per 15 minutes, numbers that pointed to a busy, well-rounded game. None of it mattered once Walker connected with the knee.
Why it matters
- Walker's move up in weight now has an emphatic opening chapter, a first-round knockout in his heavyweight debut.
- Parkin takes the second loss of his career and the first stoppage defeat to go with it, ending a 10-fight run of success before this bout.
- Walker's length, six-foot-six with a 208 cm reach, was a notable physical asset against a heavyweight listed at 193 cm.
- The result adds a high-profile finish to a card headlined at UFC 332 and gives Walker momentum in a new division.
Walker's record now reflects a signature knockout at a new weight. How the UFC positions him among the heavyweights will be the next question following a debut this decisive.
Saturday, October 3, 2026
