Floyd Mayweather tweeted last night that he's back together with his father, as the two are in training camp for Floyd's May 4 fight in Las Vegas, where he's expected to fight Robert Guerrero, but Devon Alexander is also supposedly in the mix.

Mayweather (43-0, 26 KO) has trained with his uncle Roger for years, but Floyd said in December that Roger was having some medical issues, and a trainer change back to his father, who taught him the sport as a child, was possible.

Floyd's father has, of course, been a highly successful trainer in the sport, but less so in recent years, as he's battled his own health issues, and has also been known to have difficult relationships with his fighters, including Chad Dawson and Ricky Hatton.

The move likely won't turn out to be anything truly significant as far as the in-ring results go. Mayweather, who turns 36 in 10 days, is a veteran fighter who knows what he's doing, and Roger and Floyd Sr likely aren't drastically different as trainers, anyway. The only thing that could really affect the in-ring aspect of this reunion would be if the two have another one of their blow-ups during camp.