Mayweather: Me fighting Guerrero is just a rumor; not sure who I'll fight

By Chris Williams: Unbeaten Floyd Mayweather Jr. cleared up some confusion about his May 4th fight date by saying he's still not sure who he'll be facing next for that date. Mayweather Jr. said on his twitter "As of right now I don't know who I'm fighting on May 4th. Me fighting Roberto Guerrero is