Zhilei Zhang, known as “Big Bang,” is a Chinese heavyweight boxer whose career trajectory—from a decorated amateur to a rising professional contender—reflects a blend of formidable physical traits, technical skill, and resilience developed over more than a decade in the sport. Born on May 2, 1983, in Zhoukou, China, Zhang stands an imposing 6 feet 6 inches tall with a reach of 79.9 inches and fights from a southpaw stance. These traits have made him a significant presence in the heavyweight division both in Asia and internationally.

Zhang’s amateur career was distinguished and deeply impactful, establishing him as one of China’s most successful boxers on the global stage before transitioning to a professional in 2014. His first major appearances came at the World Championships in the early 2000s. Despite a tough debut in 2003, when he lost in the opening round to Polish southpaw Grzegorz Kielsa, Zhang quickly evolved through the amateur ranks. By 2004, he reached the final of the World University Boxing Championships, narrowly losing to Rustam Saidov, signalling his upward trajectory.

Competing predominantly in the super heavyweight division, Zhang gained wider acclaim with bronze medals at the 2007 and 2009 World Amateur Boxing Championships. At the 2007 Championships, he advanced through wins over competitors like Nurpais Torobekov, Rustam Rygebayev, and Daniel Beahan before a semifinal loss to Vyacheslav Glazkov—a fighter he would face multiple times in high-stakes encounters. His 2009 performances echoed this pattern, defeating notable opponents such as Erik Pfeifer and Primislav Dimovski, before succumbing in the semifinals to Roman Kapitonenko.

Zhang’s most lauded amateur accomplishment came on home soil during the 2008 Beijing Olympic Games, where he earned the silver medal in the super heavyweight division. There, he systematically dispatched Mohamed Amanissi and Ruslan Myrsatayev with commanding scores and advanced past Vyacheslav Glazkov via walkover before a decisive loss to Italy’s Roberto Cammarelle in the final by referee stoppage after 19 seconds of the fourth round. Returning to the Olympics in 2012, Zhang demonstrated competitive grit, defeating Johan Linde by referee stoppage but ultimately losing to the then-emerging British star Anthony Joshua in a closely contested match. His 2011 World Championships also provided a notable highlight when he outpointed future heavyweight contender Joseph Parker, though he was later soundly defeated by Ivan Dychko.
This extensive amateur résumé, featuring bouts against many of the world’s elite heavyweights and consistent podium finishes, endowed Zhang with a deep tactical understanding, honed ring IQ, and the confidence to transition to the professional ranks at the age of 31.

Turning professional on August 8, 2014, Zhang launched his career in Australia, methodically building his record with a combination of powerful punching and measured technique befitting his southpaw style and physical dimensions. His early professional years saw Zhang claim regional titles and steadily escalate the quality of opposition, primarily fighting within Asia and Oceania before expanding his reach internationally. Accumulating a strong knockout ratio, Zhang capitalised on his long reach and mastery of reach control, employing a stiff jab, looming left hooks, and calculated body shots to wear down opponents.

Among his significant professional victories, Zhang’s unanimous decision win over Jerry Forrest in 2022 stood out as a demonstration of endurance and tactical refinement, as he outboxed a durable and seasoned opponent while maintaining his knockout menace. Fighting in major venues internationally, Zhang has been steadily positioning himself among top heavyweight contenders—a noteworthy feat given the division’s heightened competitiveness in recent years.

His continued presence in the division is bolstered by his connection to the global boxing community, now residing and training out of Bloomfield, New Jersey, which has provided him greater access to elite training camps and sparring against world-class competition. Currently, Zhang maintains an active professional record marked by a majority of wins through stoppages, underlining both his power and composure in the ring.

Zhilei Zhang’s boxing career represents a comprehensive evolution from a decorated amateur—marked by Olympic success and multiple World Championship medals—to a professional heavyweight steadily carving out his space on the world stage. His southpaw stance, towering physicality, and extensive international experience establish him as a formidable competitor whose journey bridges the gap between China’s emerging boxing scene and the broader global heavyweight landscape. As his career continues, enthusiasts and historians watch with interest to see how Zhang will further develop amidst the division’s elite.