Chael Sonnen looked like he hadn't missed a day in the Ultimate Fighting Championship.

Sonnen elicited a tapout from fellow top-10 middleweight Brian Stann in the second round of their bout at UFC 136 in Houston. It was Sonnen's first fight since losing 14 months ago to middleweight champion Anderson Silva.

A head-and-arm choke forced Stann to give up, not long after Sonnen took him down with authority to start the round. (MORE>>>)