Corrales never won another boxing match. A rematch between him and Castillo occurred on October 8, 2005. On the day before the fight, Castillo weighed-in 1½ lb over the 135 lb (61 kg) lightweight limit. Since Castillo did not make the weight, the fight became a non-title bout. The two fighters continued with the same fighting style that they had used in the first fight, trading inside punches throughout the first three rounds. Early in the fourth round, Castillo knocked down Corrales with a left hook to his chin. Corrales wobbled to his feet at the referee's count of ten, causing the fight to end. A third fight between the two was scheduled, but never took place, due to Castillo again coming in overweight and Corrales not willing to have to try to overcome a weight disadvantage again.

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