Roy Jones, Jr. (born January 16, 1969) is an American professional boxer. As a professional, he has captured numerous world titles in the middleweight, super middleweight, light heavyweight and heavyweight divisions. He is the only boxer in history to start his career as a light middleweight (154 lbs) and go on to win a heavyweight title.

Jones left his mark in boxing history when he won the WBA Heavyweight title, becoming the first former middleweight champion to win a heavyweight title in 106 years. Jones was named "Fighter of the Decade" for the 1990s by the Boxing Writers Association of America.

On turning professional, he had already sparred with many professional boxers, including NABF Champion Ronnie Essett, IBF Champion Lindell Holmes and Sugar Ray Leonard. Jones began as a professional on May 6, 1989, knocking out Ricky Randall in 2 rounds in Pensacola at the Bayfront Auditorium. For his next fight, he faced the more experienced Stephan Johnson in Atlantic City, beating him by a knockout in round eight.

Jones built a record of 15–0 with 15 knockouts before stepping up in class to meet former World Welterweight Champion Jorge Vaca in a Pay Per View fight on January 10, 1992. He knocked Vaca out in round one to reach 16 knockout wins in a row. After one more KO, Jones went the distance for the first time against future world champion Jorge Castro, winning a 10-round decision in front of a USA Network national audience.