By Graham Houston
After a retirement lasting 21 months, Floyd Mayweather Jr. returns to the ring on Saturday when he meets Juan Manuel Marquez in a catchweight PPV 12-rounder at the MGM Grand in Las Vegas. No title is at stake in a bout made at 144 pounds, but the prize for the winner could be a blockbuster fight against Manny Pacquiao — always assuming Pacquiao can defeat Miguel Cotto on Nov. 14 . . . Click here for more
