With the welterweight title up for grabs and Floyd Mayweather Jr.'s undefeated record on the line, Robert Guerrero and Mayweather went at it for 12 rounds on Saturday night.

With some concerns revolving around Mayweather's defense and questions about his seemingly heavy feet the past few fights, "Money" stepped into the ring and proved he's still in top physical form.

Robert Guerrero simply didn't have an answer for Mayweather, as he handed Guerrero his first loss in eight years.

Guerrero regarded Mayweather as "slick and quick" after the fight, as all three judges had 117 to 111 on their scorecards for the bout.