Floyd Mayweather (36-0, 24 KOs) scored a twelve round unanimous decision over Zab Judah (36-4, 24 KOs) to claim Judah's IBF welterweight championship Saturday night at the Thomas & Mack Center in Las Vegas. Judah got off to a good start over the first four rounds, but by round five Mayweather began to solve Judah's southpaw style. Mayweather's fast combinations bloodied Judah's nose and mouth in the seventh as he began to dominate. In round ten, Judah hit Floyd with a low blow followed up by a shot to the back of Floyd's head, prompting Floyd's trainer Roger Mayweather to enter the ring starting a melee that brought members of both corners into the ring. Roger Mayweather was ejected from ringside for the infraction. Not a lot of acton in the last two rounds. The bout ended with Mayweather taunting Judah. Scores were 116-112, 117-111, 119-109.