While most in North America were fast asleep, Johnny Walker was putting in work. Walker scored a convincing finish in the main event of UFC Shanghai early Saturday morning. MORE: Fabian Edwards with dominating performance as PFL crowns new champions

Tonight's UFC Fight Night looks to inject some ferocious Chinese talent into the light heavyweight division. Prolific finisher Mingyang Zhang has ended all 19 of his wins inside the first round, and standing in the way of a top spot in the 205 division is perennial contender Johnny Walker.

Charles Johnson (18-7 MMA, 7-5 UFC) had a rough first round against the unbeaten Lone'er Kavanagh (9-1 MMA, 2-1 UFC). But late in the second round, while he was backing up from a Johnson attack, Kavanagh dropped his hands and Johnson drilled him on the button to put his lights out for the first loss of his career.