Johnny Walker ended a skid of two straight knockout losses by scoring a shocking knockout of his own in a comeback win against Chinese light heavyweight Zhang Mingyang in the main event of UFC Fight Night in Shanghai.

Zhang Mingyang got what they call “fraud checked” earlier today (Sat., Aug. 23, 2025) at UFC Shanghai LIVE on ESPN+ from inside the Shanghai Indoor Stadium in Shanghai, China, suffering an upset TKO (leg kicks and punches) to light heavyweight veteran Johnny Walker in the main event.

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.