On this week's episode of the Hollywood Beatdown Evan and Tyron react to Brock Lesnar retiring from MMA and if his USADA testing had anything to do with it. They also watch and breakdown some celebs in the fight game this week with Neymar punching a fan and Kevin Hart getting in the boxing ring. And finally, Tyron has a big problem with Paulie Malignaggi spitting on Conor McGregor's mural.