Former heavyweight titlist Charles Martin (23-1-1, 21 KOs), who claimed a vacant belt in 2016 and held it for less than three months before being knocked out in the second round by Anthony Joshua last April, will return from a year layoff on April 25. Martin will take on journeyman Byron Polley (30-20-1, 13 KOs) in a scheduled 10-round bout at Fitzgerald's Casino & Hotel in Tunica, Mississippi, on the undercard of the Mario Barrios-Nelson Lara junior welterweight fight that headlines a Premier Boxing Champions show on Fox Sports 1.