Margarito: Forget about Floyd for now; fight those who are calling you out!Last Saturday night in Reno, NV, Paul Williams maintained his mandatory WBO ranking and undefeated record by posting a 4th round TKO of Former two-time Jr Welterweight Champion Sharmba Mitchell.From the opening bell, Williams attacked Mitchell like an angry swarm of bees. Mitchell's size disadvantage was apparent from the outset. Mitchell did, however, manage to connect with a combination in the 2nd round, but was dropped in the third round.The fourth round saw the end for...