Julio Cesar Chavez Jr. 44-0-1-31 KO's and Marco Antonio 53-5-1-46 KO's Rubio weighed in today as well as Nonito 27-1-18 KO's Donaire and Wilfredo Vasquez against 21-1-1-18 KO's. Chavez Jr. will defend his WBC Middleweight Championship against Rubio and Vasquez Jr. and Donaire will fight for the vacant WBA Super Bantamweight title153.75 lbs.