First of all Mayweather Jr is 8 years younger than Tszyu, Hatton fought a Tszyu who had 3 rounds in 2 and a half years! Fighting in his own backyard, with a referee who inexplicably forgot the rules of boxing that night Hatton got his biggest win. I also think Hatton has not been the same since that fight, it took a lot out of him. Mayweather would beat Hatton in any fight anywhere, anytime. The Tszyu of 1999-2001 KO's Hatton as easily as Pacquiao did!