2003-04-12 Derrick Gainer w pts 12 Oscar Leon, MGM Grand, Las Vegas, Nevada, USA - WBA
2003-04-12 Derrick Gainer w pts 12 Oscar Leon, MGM Grand, Las Vegas, Nevada, USA - WBA. Referee: Kenny Bayless. Scorecards: 114-112, 117-110, 112-114. Struggling to retain his title having lost the first five rounds, Gainer (126), his trusted left jab strangely missing, came back to knock Leon (126) down twice, in the eighth and tenth, before going back into his shell. Leon, who was always looking to get his punches off despite being handsomely outreached, proved to be a worthy challenger as he picked up the last two sessions to take the result to a split decision.
With Gainer due to meet the IBF champion, Juan Manuel Marquez, in a unification match, Chris John outpointed Leon over 12 rounds on 26 September at the Kartika Plaza Hotel, Bali, Indonesia, to win the ‘second tier’ title.