hours after the fight, pacquiao's team disclosed that he had injured his right shoulder in april during a training exercise. the injury was partially healed, but pacquiao requested and was denied an injection of legal painkillers before the fight. pacquiao said he re-injured the shoulder in the fourth round of the fight and was ineffective after that. on may 4, a representative of the nevada state athletic commission said that it was looking into why pacquiao had stated he had no shoulder injuries on pre-fight questionnaire and was considering fining or suspending him for the deception. pacquiao's team responded with a statement saying the united states anti-doping agency had been informed of the injury, but usada head travis tygart said pacquiao's team had only asked about the legality of certain substances for use on an unspecified shoulder injury and had provided "no medical information, no mris, no documents". mayweather initially stated that he would be open to the possibility of a rematch with pacquiao once he had recovered from his shoulder injury, but he changed his mind before talks of a rematch were in the works. pacquiao later underwent surgery to repair a torn rotator cuff and was out of action for nine months to one year.