The Casino Rama in Ontario hosted Acelino Freitas's fifth WBO Junior Lightweight title defence on September 23, 2000, against experienced Argentine challenger Carlos Rios. The matchup proved more competitive than Freitas's recent defences, with Rios's prior championship experience against Floyd Mayweather Jr. and Luisito Espinosa evident in his approach.
Unlike many Freitas opponents, Rios (49-4-2) demonstrated the ability to trade effectively with the champion, occasionally forcing Freitas (26-0) to the ropes while landing combinations. Though Freitas maintained control of the rounds, as reflected in the identical 78-73 scores from all three judges (Harold Gomes, Bernie Cormier, and Harry Davis), Rios's pressure created sustained action.
The bout's competitive nature ended in the ninth round when Freitas dropped Rios, prompting his corner to throw in the towel at 1:18. This Banner Promotions/Sports Network event, broadcast on Showtime, marked one of the longer outings in Freitas's championship reign, demonstrating his ability to adapt when quick knockouts proved elusive.
