No Mercy' by name, no mercy by nature. Ex-UFC bantamweight champion Petr Yan is on the warpath following his two-fight winning streak. Yan recouped with back-to-back wins after enduring three ...

Aljamain Sterling snipes back at a fan for taunting him over a recent clip ... unconscious also featured his one-time nemesis Petr Yan. A clip of the two men engaged in a friendly interaction ...