Justin Bieber and Lil Wayne showed their support for boxer Floyd Mayweather, Jr. by escorting him into the ring for his big fight in Las Vegas on Saturday night (14Sep13). The sportsman took on Saul 'Canelo' Alvarez at the MGM Grand Garden Arena and he was joined by the two music stars who helped warn up the crowd as he took his place ringside. Lil Wayne rapped as he marched Mayweather, Jr. into the ring, while Bieber walked with the pair and later posted a picture on his Twitter.com page, showing him standing with the boxer behind the ropes. Mayweather, Jr. went on to win the fight, and LIl Wayne tweeted, "Proud to be a part of the legacy of one of the greatest athletes that ever lived. & that's the legacy of the great Floyd "$" Mayweather (sic)."