Zuffa Boxing 08 happens on June 28th  at The Cosmopolitan In Las Vegas. The main event features Dominican southpaw Edwin De Los Santos (17-2, 15 KOs) against the Mexican-born Jose "Rayo" Valenzuela (15-3, 9 KOs) in a ten-round rematch of their memorable 2022 battle. In their first meeting, De Los Santos stepped in on one day's notice and earned a sensational technical knockout victory over Valenzuela, who was a heavy favorite. The fight was nonstop action from start to finish, with the southpaws trading knockdowns in the second round. De Los Santos scored another knockdown in the third, securing the KO after a furious follow-up wobbled Valenzuela. However, Valenzuela would go on to win the WBA 140-pound title in 2024, while De Los Santos lost a 2024 135-pound title bid to Shakur Stevenson.