"Sugar" Shane Mosley announced Monday that he was hanging up the gloves after an illustrious 19-year career that will likely earn him a place in the International Boxing Hall of Fame.
A month after losing to junior middleweight titlist Saul Alvarez by unanimous decision, the 40-year-old said he was going to concentrate on training his son, 21-year-old amateur Shane Mosley Jr., and promoting.
"I'm going to leave it alone," Mosley told ESPN.
"I'm good. I'm going into the promotional world, I'm training my son.
"It was a hell of a career. I'm happy for all the great memories and all the great fighters that I fought. Now it's time to give back. I'm ready to train my son full-time now."
Mosley won five world titles across three different weight titles and was never knocked out in his career, posting a 46-8-1 record.
He said he knew it was time to retire after being manhandled by the 21-year-old Alvarez on May 5 in Las Vegas.
"When you get older, you see what happens. You think you can do things. You see stuff that you think you can do, that you want to do, but you just can't do it anymore," Mosley said.