Following his victory over Molina, Khan returned to the UK for a fight against 33 year old Julio Díaz (40–7–1, 29 KOs) on 27 April 2013 in a 143 lbs catch-weight bout. The fight took place at the Motorpoint Arena in Sheffield. Khan was able to control some of the fight and managed to survive a fourth-round knockdown from Díaz. Khan managed to hold on throughout the fight to go onto win by UD. The scorecards read 115–113, 115–112, and 114–113. In the aftermath, Khan praised Díaz, "He caught me while I was off balance, and I couldn't get my stance back. I went down. I kept moving to recompose myself. That's what happens. There are little things to work on when we go back in the gym." Khan stated the fight could be his last in the UK.