Jose Luis Castillo vs. Floyd Mayweather Jr. (1st meeting)
2002-04-20 : Floyd Mayweather Jr 134 lbs beat Jose Luis Castillo 134½ lbs by UD in round 12 of 12
- Location: MGM Grand, Las Vegas, Nevada, USA
- Referee: Vic Drakulich
- Judge: Anek Hongtongkam 116-111
- Judge: John Keane 115-111
- Judge: Jerry Roth 115-111
Castillo penalized in the 8th for hitting on the break. Mayweather penalized in the 10th for elbowing.
Floyd Mayweather Jr. wins the vacant RING magazine lightweight championship of the world.