Boxing icon Floyd Mayweather Jr. is flexing his muscles. The sports mogul has stepped forward to let people know his career record makes him the greatest fighter of all time.

On Tuesday, Mayweather went to Instagram to remind fans and haters alike he’s deserving of all the G.O.A.T. talk.

Last week, Mayweather Jr. delivered some digital KO punches on estranged pal 50 Cent about his rap career obstacles.

Initially, Fif went to Instagram Saturday to wave the white flag on their feud and called Mayweather the greatest of all time.

Earlier this summer, Fif went to Twitter to flame Mayweather about catching a huge on-court L.