many thought Hatton had done enough early on to secure victory, with the knockdown a pivotal point in the fight. Return to light-welterweight Hatton vs. Urango Hatton's first fight back at light-welterweight was against then IBF light-welterweight champion Juan Urango for his title and the vacant IBO title on 20 January 2007 in Las Vegas, Nevada. Hatton's promoter, Dennis Hobson, stated that the impetus for moving back down was to set up a fight with José Luis Castillo, a fighter who nearly beat Floyd Mayweather Jr. at lightweight in 2002. Hatton ended up winning a twelve-round unanimous decision (UD) against Urango to re-capture the IBF light-welterweight title. He won all but one round on all three judges' scorecards. Castillo, who was on the undercard, also won, setting up their long-awaited fight. Hatton vs. Castillo Hatton was forced to relinquish his IBF title again on 10 February to be able to fight Castillo. The fight was held on 23 June 2007, at the Thomas & Mack Center in Paradise, Nevada. In round four, Hatton landed a "perfect" left hook to the liver, which put Castillo to the canvas. Hatton later claimed that four of Castillo's ribs were broken with this one punch. Unable to stand up, Castillo was counted out for the first time in his career. Return to welterweight Hatton vs. Mayweather Jr. Hatton agreed to terms on 27 July for an 8 December 2007 welterweight fight with Floyd Mayweather Jr. which was considered to be the biggest welterweight fight since the 1999 clash between Oscar De La Hoya and Puerto Rican legend Tito Trinidad. The MGM Grand Garden Arena in Las Vegas was announced as the venue on 17 August 2007. The fight was agreed to less than three months after Mayweather had said he planned to retire following a victory over Oscar De La Hoya. Hatton was able to bring the fight to Mayweather in the early rounds. In the 1st round, Hatton caught Mayweather with a left jab which knocked Mayweather off balance. His constant pressure appeared to make Mayweather uncomfortable at first. In the third round, Mayweather landed a right that cut Hatton above the right eye. In round six, referee Joe Cortez took a point away from Hatton after he appeared to hit Mayweather on the back of the head while Mayweather was rested between the ropes. However, the punch was revealed to have hit