Boxing News: All Star Boxing Signs WBC Grand Prix Champion Kevin Ramírez » August 20, 2026

All Star Boxing, Inc., led by President Felix “Tuto” Zabala Jr., announced today the signing of highly regarded Argentine cruiserweight Kevin Ramírez, winner of the prestigious Riyadh Season WBC Boxing Grand Prix, to an exclusive promotional agreement.

Ramírez, a native of Buenos Aires, enters the All Star Boxing stable as a top prospect in the cruiserweight division. Currently ranked No. 14 in the world by the World Boxing Organization (WBO) and No. 13 by the World Boxing Council (WBC), Ramírez dramatically raised his international profile by capturing the heavyweight division of the inaugural Riyadh Season WBC Boxing Grand Prix in Saudi Arabia.

Despite being a natural cruiserweight, Ramírez successfully navigated the international tournament and capped his run by defeating Bosnia and Herzegovina’s Ahmed Krnjić by unanimous decision in the championship final in Riyadh. The victory earned Ramírez the prestigious José Sulaimán Trophy and established the Argentine as a legitimate world-level contender.

Ramírez is managed by renowned Argentine boxing manager Mario Margossian and is proudly sponsored by the Unión de Camioneros de Argentina, which has supported him throughout his rise on the international boxing scene.

“Kevin Ramírez represents exactly the type of fighter we want at All Star Boxing — young, hungry, internationally proven and ready to fight the best in the world,” said Felix “Tuto” Zabala Jr., President of All Star Boxing, Inc. “We believe Kevin has all the tools to become a world champion, and our objective is to put him in a position to fight for that opportunity.”

All Star Boxing also confirmed the extension of its promotional agreement with Jair “Kaiser” Valtierra of León, Guanajuato, Mexico.

Valtierra, a former WBC Latino Lightweight Champion, originally joined All Star Boxing as an undefeated prospect and has competed against world-class opposition during his professional career. The new agreement extends the relationship between Valtierra and All Star Boxing as the Mexican contender enters the next stage of his career.

“Jair has been part of our company for several years, and we are pleased that he has chosen to continue his career with All Star Boxing,” Zabala added. “He has already faced high-level opposition, is still young, and we believe there is another important chapter ahead for him.”

AN INTERNATIONAL CHAMPIONSHIP ROSTER

Ramírez and Valtierra join an increasingly international All Star Boxing roster led by reigning world champions Anthony “La Princesa” Olascuaga and René “El Chulo” Santiago, together with the company’s “First Lady,” Eveling “Colocha” Ortega, and a strong group of world-ranked contenders and regional champions representing the United States, Puerto Rico, Nicaragua, Colombia, Japan, Mexico and Argentina.

The roster reflects All Star Boxing’s continued strategy of identifying and developing elite talent across international markets while positioning its fighters for regional and world championship opportunities.

“Having Anthony ‘La Princesa’ Olascuaga and René ‘El Chulo’ Santiago as world champions, together with Eveling ‘Colocha’ Ortega sitting at No. 1 in the WBO and a group of highly ranked contenders behind them, demonstrates the strength and international depth of our stable,” Zabala said. “Adding Kevin Ramírez after what he accomplished in the WBC Grand Prix makes that group even stronger.”

“For more than six decades, our family has been involved in developing fighters and creating world champions,” Zabala continued. “Today, we have champions and contenders from the United States, Puerto Rico, Nicaragua, Colombia, Japan, Mexico and Argentina competing under the All Star Boxing banner. We are building a truly international team, and our goal remains the same: to develop fighters, create opportunities and take them all the way to world championships.”

Details regarding Kevin Ramírez’s All Star Boxing debut, as well as Jair Valtierra’s next appearance, will be announced shortly.

Among the leading members of the All Star Boxing team are:

Anthony “La Princesa” Olascuaga — Los Angeles, California, USA: Reigning WBO Flyweight World Champion and one of the sport’s leading fighters at 112 pounds.
René “El Chulo” Santiago — Puerto Rico: Reigning WBO and WBA Light Flyweight World Champion, representing All Star Boxing at the championship level in one of boxing’s most competitive divisions.
Eveling “Colocha” Ortega — Nicaragua: Known as the “First Lady of All Star Boxing,” Ortega is the reigning WBO Latino Junior Flyweight Champion and currently the No. 1-ranked contender in the WBO, placing her directly in the world championship picture. She is also among the leading world-ranked contenders in the WBA.
Kevin Ramírez — Argentina: Riyadh Season WBC Boxing Grand Prix Champion, currently ranked No. 13 by the WBC and No. 14 by the WBO at cruiserweight. Ramírez is managed by renowned Argentine manager Mario Margossian and sponsored by the Unión de Camioneros de Argentina.
Yuberjen “Tremendo” Martínez — Colombia: Undefeated professional, WBO No. 2-ranked flyweight and WBO Latino Champion, as well as an Olympic silver medalist representing Colombia.
Yuga Ozaki — Japan: Undefeated WBO Asia-Pacific Light Flyweight Champion and WBO No. 2-ranked world contender, positioning him among the leading challengers in the division.
Jair “Kaiser” Valtierra — Mexico: Former WBC Latino Lightweight Champion, continuing his professional career under the All Star Boxing banner after extending his promotional agreement with the company.
Esteban Garzón — Colombia: Undefeated WBO Youth Lightweight Champion and one of Colombia’s leading young professional prospects.
Gerardo Zapata — Nicaragua: International flyweight contender currently ranked No. 7 by the WBO, placing him firmly in the world championship picture at 112 pounds.
Bryan “El Tsunami” Blandón — Nicaragua: Undefeated WBO world-ranked junior bantamweight contender and one of the rising young fighters in the All Star Boxing stable.