Jorge Rodrigo Barrios vs. Joan Guzman
2006-09-16 : Jorge Rodrigo Barrios 131½ lbs lost to Joan Guzman 129 lbs by SD in round 12 of 12
- Location: MGM Grand, Las Vegas, Nevada, USA
- Referee: Vic Drakulich
- Judge: Carol Castellano 113-114
- Judge: Bill Graham 114-113
- Judge: Bill Lerch 112-115
- World Boxing Organization Junior Lightweight Title
- Barrios lost his title on the scales when he failed to make the weight so that the title was declared vacant after the weigh-in. The belt was on the line for Guzman only.
- Had Barrios not lost the fight, the title would have still been considered vacant.
- Barrios lost a point in the sixth round for repeated low blows.
- Unofficial weight on the day of the fight: Joan Guzman 143 lbs, Jorge Barrios 148lbs