Loses to a prime ODLH, loses to 99-2000 SSM, loses to BHOP, Quartey (would never get in the ring with Quartey), would duck Tito, IMO would lose to the 2008 version of Pacman, etc.
Prime Mosley defeats Mayweather. Yes, I know he ducked May, but he had every skill necessary to beat him. Mosley was never the same after his first loss (RIP Vernon), but Mayweather was simply to small to compete with him. Shane had the size, he had the power, Shane simply had everything. Even an old, shot Mosley, 10 years after his prime, could rock him seriously. B-Hop would have also defeated him. Sturm maybe. He beats the rest.
Mayweather definitely would not have gone undefeated. His career would have been much more exciting to watch though. Chavez twice Whitaker Trinidad Mosley (twice) Quartey A roided up Vargas Hopkins Pacman Mayorga Camacho Ruelas ect... Excellent opponents like Gonzalez, Hernandez, Gatti, Leija, Castillejo, Molina, Paez, ect... don't even get mentioned as good wins on Oscar's record, because his resume is so stacked. Mayweather was great... you can't take that away from him. However, there is zero chance that he walks through that gauntlet of fighters can remains unbeaten. He would have suffered quite a few losses, imo. Let's also throw in a prime Oscar as an opponent, since an old Oscar also fought a prime Floyd.
Floyd goes through Oscar's resume undefeated, same as he did his own. The only exception being Hopkins, but that fight wouldn't happen due to Hopkins being much too big.
Tito was at 147 when Floyd was at 130 and 135 so yeah, he would have been too big. Tito would have been an easy fight for Floyd though. See the Corrales fight, it would look very similar. Except Tito likely doesn't get TKO'd, but easy wide UD. Tito was too slow, and easily outboxed.
Bell Feces !! With al the Peds , biased officials, Pillow gloves etc he still lost at least 2 CLEARLY already But Moretti & his cohorts made sure he kept his 0 Forget him he's done retired in disgrace a proven cheat:hi::hi: