Rocha, of Santa Ana, California, is No. 2 in the WBO ratings under champion Brian Norman Jnr while Mexico’s Curiel, 29, is No. 3 by the WBC and WBA, No. 5 in the IBF and No. 3 in the WBO following his fourth-round knockout of Victor Rodriguez on the June 28 card headlined by Jake Paul-Julio Cesar Chavez Jnr in Anaheim, California.