Mexican world champion Emanuel “El Vaquero” Navarrete hopes to join an elite circle of his countrymen, but he’ll have to venture into a new weight class against one of its top contenders.

Navarrete will take on Ukraine’s Denys Berinchyk for the vacant WBO lightweight world championship on Saturday, May 18 at Pechanga Arena San Diego. The fighting pride of San Juan Zitlaltepec will attempt to join Mexican-born warriors Erik Morales, Jorge Arce, Juan Manuel Marquez, Leo Santa Cruz, and Canelo Alvarez in becoming a four-weight world champion.

In the 12-round welterweight co-feature, San Diego’s Giovani Santillan will face Puerto Rican contender Derrieck Cuevas. Santillan is the WBO No. 1 contender at 147 pounds, a status he’ll seek to retain in front of his hometown fans.