• Floyd Mayweather, Jr. of the U.S. poses with his title belts after defeating Manny Pacquiao of the Philippines in their welterweight WBO, WBC and WBA (Super) title fight in Las Vegas, Nevada, May 2, 2015.

Floyd Mayweather, Jr. of the U.S. poses with his title belts after defeating Manny Pacquiao of the Philippines in their welterweight WBO, WBC and WBA (Super) title fight in Las Vegas, Nevada, May 2, 2015. (Photo : REUTERS)

Undefeated boxer Floyd Mayweather Jr. is apparently not happy about Manny Pacquiao's claim of fighting despite suffering a shoulder injury, which for him are just excuses and he lost a lot of respect for the Filipino fighter.

"Excuses, excuses, excuses," said Mayweather Jr. in an interview with Jimmy Gray in  "Inside Mayweather vs. Pacquiao: Epilogue," which will air on Showtime on May 9, Saturday. "I'm not going to buy into the bull---- and I don't want the public to buy into the bull----."

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"He lost," Mayweather Jr. said of Pacquiao. "He knows he lost. I lost a lot of respect for him after all of this."

According to Mayweather Jr., both Pacquiao's left and right hands were fast during their fight on May 2 at MGM Grand in Las Vegas and the Filipino fighter was throwing both hands "fast and strong."

In addition, Mayweather Jr. admitted that he did text a reporter and say he will fight Pacquiao but he changed his mind.

"At this particular time, no, because he's a sore loser and he's a coward," Mayweather Jr. said. "If you lost, accept the loss and say, 'Mayweather, you were the better fighter.'"

Like Mayweather Jr., Alex Ariza believes that Pacquiao's shoulder injury is just an excuse, MLive has learned.

Pacquiao underwent arthroscopic surgery to repair a torn rotator cuff on May 6, Wednesday, in Los Angeles and his surgeon Dr. Neal ElAttrache said he could "not be more pleased with the results," The Guardian reported.

Via unanimous decision, Mayweather Jr. defeated Pacquiao with judges' scores of 118-110, 116-112, 116-112.