Mayweather says 'losers have excuses' after Pacquiao blamed injury for defeat in Las Vegas

Floyd Mayweather Jr. has taken a swipe at Manny Pacquiao by saying 'winners win and losers have excuses' after the Filipino rival blamed a shoulder injury for his defeat against the unbeaten American boxing champion in the 'fight of the century' bout in Las Vegas.

Mayweather extended his unbeaten record to 48-0 with a unanimous-decision win over the Filipino politician-turned boxer on Saturday night.

According to the BBC, the Nevada Athletic Commission (NAC) said Pacquiao did not declare his injury on a pre-fight questionnaire. The boxer, however, has claimed that he was transparent and a treatment plan had been agreed.

Meanwhile, two people in Nevada have alleged the boxer defrauded ticket buyers, television viewers and gamblers. They have opened lawsuits just hours after the NAC accused the fighter of being dishonest.

However, Pacquiao's adviser Michael Koncz said that he was taking 'full responsibility' for the 'inadvertent mistake', claiming that it was him who checked the box rather than the Filipino. He added that he didn't think he read the questionnaire correctly.

Although Mayweather had previously voiced his intention to retire after a bout fight in September, the American has reportedly revealed that he is open to a re-match in 12 months time after Pacquiao recovers from shoulder surgery.