Floyd Mayweather mocks Manny Pacquiao: 'Winners win and losers have excuses'

Pacquiao complained of an injured shoulder after the fight

Floyd Mayweather lands a punch on Manny Pacquiao in Saturday night's fight (Jason Merritt/ Getty)

Floyd Mayweather has mocked his beaten opponent Manny Pacquiao on Instagram, after the Filipino revealed that he had fought in the fight, which Mayweather won convincingly on points, on Saturday with an injured shoulder.

Mayweather posted a picture on his account today, writing: "19 years in the fight game and I've had one excuse: "Don't have an excuse". Winners win and losers have excuses."

The post has emerged following a report that Mayweather has agreed to give Pacquiao a rematch next year. The unbeaten American is said to have told an ESPN journalist Stephen A. Smith that we would be willing to fight Pacquiao again - once he recovers from shoulder surgery to repair a tear in his rotator cuff.

"I will fight him in a year after his surgery," Mayweather is reported to have told Smith in a text message.

The news comes following reports that Pacquiao is the subject of a $5m lawsuit in Las Vegas after being accused if lying over a shoulder injury sustained before the fight.

The Nevada Athletic Commission (NAC) says Pacquiao did not declare he had a problem on a pre-fight questionnaire.

Two people in Nevada have alleged the boxer defrauded ticket buyers, television viewers and gamblers, but Pacquiao's representatives have said that they are confident that the lawsuit will be dismissed.

'The allegations in this lawsuit are demonstrably false,' attorney Daniel Petrocelli, who represents Top Rank, told ESPN. 'There are documents that explicitly show the medications that Manny was using to treat his shoulder and it was fully disclosed with USADA, which we contracted for this fight.'

'This is a frivolous lawsuit and we are confident it will be dismissed,' he added.

Pacquiao can face a fine or suspension for wrongly filling out the medical forms.