Floyd Mayweather Jr. has begun training for what is likely his final bout.
On Monday, Mayweather, 48-0, posted a montage of videos on social media announcing that he was preparing for the fight on Sept. 12.
An opponent has yet to be named, but that hasn't stopped speculation.
Mayweather’s last fight against Manny Pacquiao was one of the most anticipated matches in the history of the sport and shattered pay-per-view records with 4.4 million people purchasing the fight. The price tag for viewing the fight on TV, $100 for HD, was more than any other prior to that bout.
Mayweather won by a unanimous decision, with scores of 118-110, 116-112, 116-112.
For the third time in four years, Mayweather was ranked by Forbes as the world’s highest-paid athlete, taking in $300 million, the largest portion coming from the Pacquiao fight, according to Forbes.
Mayweather’s 2015 earnings broke the record for athlete earnings in a single year, which was previously held by Tiger Woods.