WBO featherweight Emanuel “Vaquero” Navarrete (35-1, 29 KOs) will defend his world title in the main event against countryman Eduardo “El Gemelo” Baez (21-2-2, 7 KOs) on Saturday, August 20 at Pechanga Arena San Diego. Navarrete also signed a new multi-year promotional agreement with Top Rank that will see him fight on the ESPN family of networks in events promoted in association with Zanfer Promotions.

The 10-round welterweight co-feature will see local hero Giovani “Gallo de Oro” Santillan (29-0, 16 KOs) risk his unbeaten record against a soon-to-be-announced opponent.

In a four-round special feature, undefeated middleweight prospect Nico Ali Walsh (5-0, 4 KOs), grandson of Muhammad Ali, will fight Reyes Sanchez (7-2, 3 KOs) in a rematch of their December 2021 bout that Ali Walsh edged by majority decision. Ali Walsh will fight in the historic venue that hosted one of his grandfather’s most memorable bouts. In March 1973, Ali and Ken Norton battled for 12 rounds at what was then known as San Diego Sports Arena. Ali suffered a broken jaw and lost a split decision in a major upset.

Undercard action, streaming live and exclusively on ESPN+, includes an eight-round junior welterweight showdown between unbeaten Mexican standouts Lindolfo Delgado (15-0, 13 KOs) and Omar “Pollo” Aguilar (24-0, 23 KOs). Delgado represented Mexico at the 2016 Rio Olympics, while Aguilar has 15 first-round knockouts on his ledger and second-round stoppages in his last three bouts.

IBF #1. featherweight contender Luis Alberto Lopez (25-2, 14 KOs) returns in an eight-rounder, while junior lightweight contender Xavier Martinez (17-1, 11 KOs) looks to bounce back from his first career loss against Alejandro Guerrero (12-2, 9 KOs) in an eight-rounder.