SUNRISE, Fla. — Late replacement Seth Petruzelli stopped hyped heavyweight Kimbo Slice in just 14 seconds last night, handing the former street fighter his first mixed martial arts loss.

Petruzelli, 28, had been slated to fight on the undercard against Aaron Rosa at the BankAtlantic Center. But he was bumped up to the heavyweight main event of the EliteXC "CBS Saturday Night Fights" card when the athletic commission sidelined Ken Shamrock. The UFC Hall of Famer needed six stitches over his left eye after an old cut reopened when he was bumping heads warming up earlier in the day.

Petruzelli (11-4), a graduate of Season 2 of "The Ultimate Fighter" reality TV show, had been training to fight at light-heavyweight and weighed in 205 1/2 pounds, 29 pounds lighter than Slice. He had also lost two of his last four fights before dispatching Slice.

Slice (3-1) declined to touch gloves in the cage before the fight and came forward at the bell, backing off Petruzelli.

But as Slice looked to block a front kick, he was toppled with a right. Slice fell forward and Petruzelli kept punching. Slice turned on his back and had taken almost a dozen unanswered punches before referee Troy Waugh stepped in.