Brandon Rios (31-0-1, 23KOs) became a little hot at the official weigh-in for his rematch with Mike Alvarado (33-1, 23KOs). Both boxers weighed in at the junior welterweight limit of 140-pounds. After they weighed-in, Rios exchanged words with some of the many fight fans who came down from Denver to support Alvarado at the Mandalay Bay in Las Vegas. Video by Ryan Burton.