Trailer: Floyd Mayweather Jr. vs. DeMarcus Corley

Mayweather, 27, the former lightweight and junior lightweight champ making his 140-pound debut, put on a display as he clinically dissected former titlist DeMarcus "Chop Chop" Corley, knocking him down twice officially and scoring a lopsided decision, 119-108 (twice) and 119-107.