Matt Wiman is deciding to call it a career after suffering one of the more brutal knockouts in recent memory at UFC on ESPN 19 . Wiman’s career comeback hit what appeared to be its final snag last week when he was on the receiving end of a devastating slam knockout courtesy of Jordan Leavitt at UFC Apex in Las Vegas. It was a scary scene, but fortunately Wiman (16-10 MMA, 10-8 UFC) left the octagon under his own power