Roy Jones by a blow out after a few rounds of feelin out. By this time in Mayweathers career, Jones had dominated all of his oppents besides maybe B-hop and hardly lost a round. Mayweather has already lost a fight (First Castillo match, no doubt) and barely won last night, although he did win. Jones is the greatest fighter of all time, and no matter how much shit HBO talks, Floyd ain't da next Roy Jones. Fighters like Roy don't come around too often if ever again.