oscar valdez

Former flyweight and 115-pound titleholder Vic Darchinyan dropped Javier Gallo four times en route to fourth-round stoppage in a wild UniMas-televised featherweight main event from Laredo, Texas, on Saturday.

Fighters from the undercard of Saturday's Bradley-Provodnikov matchup -- including Jessie Vargas, Jesse Magdaleno, Andy Ruiz and Oscar Valdez -- held a media day workout in Los Angeles on Thursday.

Unbeaten WBO welterweight beltholder Tim Bradley will make the first defense of his title against Russian Ruslan Provodnikov on March 16 at The Home Depot Center ini Carson, Calif.

Saturday night's fourth bout between Manny Pacquiao and Juan Manuel Marquez has sold out at the MGM Garden Arena, producing a live gate of $10.5 million.

Mexican amateur sensation Jose Ramirez participated in his first workout under the Top Rank banner at The Wild Card in Hollywood, Calif., on Wednesday, and will make his professional debut on the Dec. 8 undercard of Manny Pacquiao-Juan Manuel Marquez IV.

Highly-celebrated 2012 U.S. Olympian Jose Ramirez has signed with Top Rank. The lightweight will make his professional debut on the undercard of the fourth bout between Manny Pacquiao and Juan Manuel Marquez on Dec. 8 at the MGM Grand in Las Vegas. 

Featherweight Oscar Valdez made his professional debut under the Top Rank banner with Saturday night's second-round stoppage of Angel Prado.

Top Rank has signed two-time Mexican Olympian Oscar Valdez, who will make his professional debut on Nov. 3, to a promotional contract.