2006-05-06 Luis Alberto Perez w pts 12 Dmitryi Kirillov, DCU Centre, Worcester, Massachusetts, USA - IBF
2006-05-06 Luis Perez w pts 12 Dimitri Kirilov, DCU Centre, Worcester, Massachusetts, USA - IBF. Referee: John Zablocki. Scorecards: 115-113, 114-113, 110-117. Due to defend his title against Ricardo Vargas on 4 November in Phoenix, Arizona, when Perez came in over the weight and the fight had to be scrapped the latter forfeited his belt.