All Star Boxing signs WBC Grand Prix champion Kevin Cristopher Ramírez, the Argentine cruiserweight, in an exclusive promotional deal announced Friday, August 21, 2026.
, led by President Felix “Tuto” Zabala Jr., announced today the exclusive promotional signing of Kevin Cristopher Ramírez, the celebrated Argentine cruiserweight who recently won the Riyadh Season WBC Boxing Grand Prix. This significant move, reported on Friday, August 21, 2026, solidifies All Star Boxing’s growing international stable of fighters.
All Star Boxing signs WBC Grand Prix champion Kevin Cristopher Ramírez in a key move for the organization.
In addition to Ramírez’s acquisition, the promotional outfit also confirmed the extension of its agreement with Mexican lightweight contender Jair “Kaiser” Valtierra, signaling a dual strategic push to bolster its roster with both fresh talent and seasoned professionals.
All Star Boxing Signs WBC Grand Prix Champion
The signing of Kevin Cristopher Ramírez, a 26-year-old from Buenos Aires, comes after his impressive performance in the heavyweight division of the inaugural Riyadh Season WBC Boxing Grand Prix in 2025. Ramírez, despite being a natural cruiserweight, captivated audiences by navigating the tournament against larger opponents.
His victory in the prestigious Grand Prix, where he earned the José Sulaimán Trophy, significantly raised his profile on the global boxing stage. Ramírez now enters All Star Boxing with considerable momentum, currently holding rankings of No. 14 by the World Boxing Organization (WBO) and No. 13 by the World Boxing Council (WBC) in the cruiserweight division.
Felix “Tuto” Zabala Jr. expressed immense enthusiasm about the new addition. “Kevin Cristopher 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,” Zabala stated.
He added, “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.” This sentiment underscores the promotional company’s clear ambition for its new Argentine star.
Ramírez’s triumph at the Grand Prix
Ramírez’s journey through the Riyadh Season WBC Boxing Grand Prix was nothing short of dramatic. He culminated his run on December 20, 2025, in Riyadh, Saudi Arabia, by defeating Bosnia and Herzegovina’s Ahmed Krnjić, who was 28 at the time, via a unanimous decision.
The judges’ scorecards reflected Ramírez’s dominance, reading 77-75 twice and 78-74. This final victory followed a series of challenging bouts, including a first-round knockout over Brian Zwart and a split decision win against Dante Stone, where Ramírez scored an early knockdown.
His path also included a hard-fought unanimous decision over Reagan Apanu, complete with a knockdown, and even advancing past Piotr Lacz despite a split draw in the quarterfinals, thanks to an enhanced scoring system by the WBC Executive Panel. This demonstrated his resilience and ability to perform under pressure on an international platform.
A strategic move for All Star Boxing
The double announcement of the Kevin Ramírez signing and the Jair Valtierra contract extension highlights All Star Boxing’s aggressive strategy in the boxing world. Felix “Tuto” Zabala Jr. emphasized the company’s six-decade legacy in developing fighters and creating world champions.
Their current roster boasts an impressive array of talent from across the globe, including world champions like Anthony “La Princesa” Olascuaga and René “El Chulo” Santiago. Adding a fighter of Ramírez’s caliber, fresh off a major tournament win, undoubtedly strengthens this international ensemble.
Zabala noted, “Adding Kevin Cristopher Ramírez after what he accomplished in the WBC Grand Prix makes that group even stronger.” The move reinforces All Star Boxing’s commitment to scouting and nurturing elite prospects from diverse boxing markets, from the United States to Japan.
This strategy positions their athletes for significant regional and world championship opportunities, reflecting a broad, global outlook. It’s a clear signal of intent to compete at the highest levels of the sport. Promotional deals like this are crucial for a boxer’s career trajectory and often dictate their path to title contention.
Valtierra’s continued journey with the company
Meanwhile, the extension of Jair “Kaiser” Valtierra’s promotional agreement underscores All Star Boxing’s dedication to its existing fighters. Valtierra, a former WBC Latino Lightweight Champion from León, Guanajuato, Mexico, initially joined the company as an undefeated prospect.
He’s since faced world-class opposition, gaining valuable experience. Zabala expressed satisfaction with the continued partnership, stating, “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 also hinted at Valtierra’s future potential, adding, “He has already faced high-level opposition, is still young, and we believe there is another important chapter ahead for him.” This suggests All Star Boxing sees significant further development for the Mexican contender.
The expanding international championship roster
All Star Boxing’s commitment to an international roster is clear, featuring champions and contenders from seven different countries. This diverse lineup, including athletes from the United States, Puerto Rico, Nicaragua, Colombia, Japan, Mexico, and Argentina, underscores their global reach and talent acquisition philosophy. Their stable represents a truly international powerhouse in professional boxing.
The company currently features reigning WBO Flyweight World Champion Anthony “La Princesa” Olascuaga, hailing from Los Angeles, California, USA, who competes at 112 pounds. Puerto Rico’s René “El Chulo” Santiago holds both the WBO and WBA Light Flyweight World Champion titles, making him a dominant force in one of boxing’s most competitive divisions.
Nicaragua’s Eveling “Colocha” Ortega, known as the “First Lady of All Star Boxing,” is the reigning WBO Latino Junior Flyweight Champion and the No. 1-ranked contender in the WBO. Her position puts her firmly in the world championship picture, alongside her strong ranking in the WBA.
Other notable talents include Colombia’s Yuberjen “Tremendo” Martínez, an undefeated professional and Olympic silver medalist, who is the WBO No. 2-ranked flyweight. Japan’s Yuga Ozaki, another undefeated prospect, holds the WBO Asia-Pacific Light Flyweight Championship and is a WBO No. 2-ranked world contender.
Spotlight on rising stars and current champions
The depth continues with promising fighters like Esteban Garzón from Colombia, an undefeated WBO Youth Lightweight Champion and a leading young prospect. Nicaragua also contributes Gerardo Zapata, a flyweight contender ranked No. 7 by the WBO, and Bryan “El Tsunami” Blandón, an undefeated WBO world-ranked junior bantamweight.
The inclusion of Kevin Cristopher Ramírez, with his Riyadh Season WBC Boxing Grand Prix title and his current WBO and WBC rankings at cruiserweight, further solidifies the team’s international prowess. His management by renowned Argentine manager Mario Margossian and sponsorship by the Unión de Camioneros de Argentina highlight his strong domestic backing.
This comprehensive approach to talent management, covering multiple weight classes and nationalities, provides a robust foundation for All Star Boxing’s long-term aspirations. It also offers a blueprint for other promotional companies seeking to build a truly global brand in the sport. Achieving world championship status requires not just talent but also shrewd management and strategic promotion.
Ramírez’s professional trajectory and potential
Kevin Cristopher Ramírez, born December 30, 1999, made his professional debut in 2022. Despite a relatively short professional career, his ascent has been remarkably swift, culminating in his WBC Grand Prix win. His record, as of December 2025, stands at 11 wins (4 by KO), 0 losses, and 2 draws from 14 total fights.
These figures reflect a fighter with genuine potential and a capacity for decisive victories, evidenced by his 33.33% knockout rate. The slight discrepancies in his record across various sources, often conflating him with other fighters named Kevin Ramirez, highlight the challenge of tracking emerging talent in a global sport.
Ramírez’s ability to compete effectively in both cruiserweight and heavyweight divisions speaks to his versatility and physical adaptability. While cruiserweight is his natural home, his success in the heavyweight Grand Prix demonstrates a willingness to take on significant challenges, a trait highly valued in boxing.
His manager, Mario Margossian, has been instrumental in guiding his career, and the backing from Unión de Camioneros de Argentina further supports his journey. This comprehensive support system is often vital for young fighters aiming for the top.
Navigating weight classes and tournament success
His impressive 61 rounds of professional experience, accumulated over a short period, also point to an active and developing fighter. The Riyadh Season WBC Boxing Grand Prix, with its multi-round format and diverse opponents, served as an accelerated learning curve, preparing him for higher-stakes contests.
The Grand Prix itself was a groundbreaking international tournament, organized by the World Boxing Council in collaboration with Saudi Arabia’s Riyadh Season initiative. Featuring quarterfinals, semifinals, and 10-round finals across multiple weight divisions, it provided an unparalleled platform for fighters like Ramírez to prove their mettle.
His success in this rigorous format, particularly against an experienced opponent like Ahmed Krnjić, confirms his readiness for world-level competition. This background, combined with his youth, makes him a compelling prospect for All Star Boxing. A fighter’s ability to adapt and overcome challenges in different weight classes can define their legacy.
Looking ahead for All Star Boxing and its new signees
With Kevin Cristopher Ramírez now firmly under its banner, All Star Boxing is set to unveil his debut details shortly. The boxing world will be watching to see how the promotional company plans to fast-track the Grand Prix champion towards a world title shot in the competitive cruiserweight division.
His next fight will be a crucial step in this journey, likely designed to further elevate his international standing.
Similarly, fans will await news regarding Jair “Kaiser” Valtierra’s next appearance. His contract extension suggests a renewed focus on his career trajectory, potentially aiming for higher-profile bouts or a return to championship contention in the lightweight division. The company’s investment in both fighters indicates a clear plan for their respective futures.
The strategy of developing a truly international team, as articulated by Felix “Tuto” Zabala Jr., seems to be paying dividends. By identifying and nurturing talent from across the globe, All Star Boxing is not only expanding its brand but also enriching the sport with diverse fighting styles and narratives. Their objective remains clear: to guide these fighters to world championships.
The boxing landscape is constantly evolving, with promotional outfits playing a pivotal role in shaping careers. All Star Boxing’s recent moves demonstrate a proactive approach to remain at the forefront, creating opportunities for its fighters and delivering exciting matchups for fans worldwide. The coming months will reveal the immediate plans for both Ramírez and Valtierra, setting the stage for their next important chapters.
