Former champions “Sugar” Shane Mosley (47-9-1) and Ricardo “El Matador” Mayorga (31-8-1) are set to square off in the ring Aug. 29 in Los Angeles, but they didn’t wait until then to start fighting.

Jose Martino of noted that the two scuffled during Saturday’s press conference in Las Vegas, after Mayorga blew smoke in Mosley’s face. Shane Mosley proceeded to slap the cigarette out of his mouth in the following video.

Shane Mosley SLAPS Ricardo Mayorga Cigarette Out His Mouth