Diego Corrales vs. Joel Casamayor (1st meeting)
2003-10-04 : Joel Casamayor 130 lbs beat Diego Corrales 128½ lbs by TKO at 3:00 in round 6 of 12
- Location: Mandalay Bay Resort & Casino, Las Vegas, Nevada, USA
- Referee: Tony Weeks
- Judge: Burt A. Clements
- Judge: Chuck Giampa
- Judge: Glenn Trowbridge
- IBA Super Featherweight Title (Vacant title)
- IBF Junior Lightweight Title Eliminator
- Time: 3:00
- Weights: Corrales 128.5 lbs, Casamayor 130 lbs
- Corrales was down once in the third and once in the fourth round.
- Casamayor was deducted a point in the third round.
- Casamayor was down once in the fourth round.
- Fight stopped due to two cuts inside Corrales's mouth.