Paulie Malignaggi, who won world titles in two weight classes and got as much out of his ability as he possibly could, announced his retirement from boxing on Monday -- the 19th anniversary of his first boxing match as an amateur. Malignaggi's announcement, made via social media, came two days after he suffered an eighth-round knockout loss on a brutal left hook to the body from Sam Eggington on the Tony Bellew-Davis Haye undercard at the O2 Arena in London on Saturday.

"19 years ago today - March 6, 1998 - I entered the ring for the first time as an amateur. That makes this as good a time as any for me to officially announce my retirement from competition," Malignaggi wrote. "My life is in a place 19 years later that I never dreamed it could be in. And I have boxing to thank for that. I gave absolutely everything I had to this sport for almost 2 decades, and I will never lose the many, many incredible memories that were created during that time."