Mayweather: At this time rematch is off, Manny Pacquiao a 'coward'

Floyd Mayweather said he's changed his mind about a rematch with Manny Pacquiao and called him a "coward" and a "sore loser."

In an interview with Showtime's Jim Gray, Floyd Mayweather said he's changed his mind about a rematch with Manny Pacquiao and called him a "coward" and a "sore loser," according to Lance Pugmire of the Los Angeles Times.

Mayweather defeated Pacquiao by unanimous decision in their long-awaited May 2 fight in Las Vegas. He confirmed he sent a text to ESPN's Stephen A. Smith earlier this week that said he would be willing to give Pacquiao a rematch.

"Did I text Stephen A. Smith and say I will fight him again? Yeah, but I change my mind," said Mayweather. "At this particular time, no, because he's a sore loser and he's a coward ... If you lost, accept the loss and say, 'Mayweather, you were the better fighter.'"

• BISHOP: Total victory still eludes Mayweather

After the fight, Pacquiao revealed that he was dealing with a shoulder injury. He will likely be out of action for the next 9-12 months after he has surgery to repair a tear in his right rotator cuff, but Top Rank promoter Bob Arum had said Pacquiao would be up for a rematch with Mayweather next year. 

"Excuses, excuses, excuses," said Mayweather. "I'm not going to buy into the bull---- ... and I don’t want the public to buy into the bull----. He lost. He knows he lost. I lost a lot of respect for him after all of this."

After his defeat, Pacquiao said during his post-fight interview that he thought he won the fight and "[Mayweather] didn't do nothing."

• MANNIX: Pacquiao's team gambled with his future

Mayweather, 38, has never lost a fight in 48 tries as a professional. He said after Saturday's bout that he will fight once more in September and "then it's time for me to hang it up."

Gray's full interview with Mayweather will air at 9 p.m. ET on Showtime on Saturday. 

- Molly Geary