Golden Boy has the Zurdo Ramirez vs. Sullivan Barrera undercard, which takes place July 9 at Banc of California Stadium in Downtown Los Angeles and will be streamed live on DAZN.

Joining the already announced Joseph “Jo Jo” Diaz Jr. vs. Javier Fortuna co-main event, WBA female minimumweight champion Seniesa “Super Bad” Estrada (20-0, 8 KOs) moves up a division to challenge Tenkai Tsunami (28-12-1, 16 KOs) for the WBO light flyweight title and lightweight Hector Tanajara Jr. (19-0, 5 KOs) faces William “El Camaron” Zepeda (22-0, 20 KOs) in the two featured clashes.

Also, Diego De La Hoya (22-1, 10 KOs) will face Bryan Chevalier (15-1-1, 12 KOs) in a 10-round featherweight fight.

WBA female flyweight champion Naoka Fujioka (18-2-1, 8 KOs), Japan’s only five-division world champion, will defend against Sulem Urbina (12-1, 2 KOs).

Former world title challenger Lamont Roach Jr. (20-1-1, 8 KOs) will face TBA in a 10-round super featherweight battle.

Super bantamweight contender Azat “Crazy A” Hovhannisyan (19-3, 16 KOs) will against TBA return in a 10-rounder.

Heavyweight standout Mihai Nistor (2-0, 2 KOs) will fight in an eight-round bout against Colby Madison (9-2-2, 6 KOs).

Miguel Gaona will make his pro debut in a four-round lightweight battle.

“When it comes to undercards, nobody does it better than we do,” said Oscar De La Hoya, Chairman and CEO of Golden Boy.