Los Mochis, Sin .- The world lightweight champion WBC Humberto “Zorrita” Soto, met with the pre weighing of seven days before the fight  as ordered by the World Boxing Council, in order to make his first title defense next Saturday, May 15th in the “Centenario Stadium” of  Los Mochis city againts Ricardo “Pelon” Dominguez (The Azteca Champion).