Nieky Holzken has officially called time on one of the most accomplished and respected careers in modern combat sports.
The Dutch striker announced his retirement this week on X, bringing an end to a journey that spanned more than two decades across kickboxing, boxing and mixed martial arts.
“After a lot of reflection, I’ve decided to step away from my active career.7x World Champion. 150+ fights. All around the world. Proud of the journey. Grateful for everyone who stood by me.This chapter ends, a new one begins.”
Known worldwide for his technical brilliance, granite toughness and fan-friendly style, Holzken leaves the sport as one of the finest strikers of his generation.
Holzken built his legacy primarily in kickboxing, where he became synonymous with elite-level competition under the GLORY banner. A former GLORY welterweight champion, he ruled the division during one of its most competitive eras, defeating a who’s who of top contenders while consistently delivering high-level performances. His sharp boxing combinations, devastating body work and calm presence under pressure made him a nightmare matchup for anyone standing across from him.
Beyond titles, Nieky Holzken earned admiration for his consistency. Year after year, he stayed relevant at the highest level, adapting his game as new challengers emerged. Even when championship gold slipped away, Holzken remained a staple in marquee fights, often serving as the benchmark younger fighters were measured against.
His combat sports résumé extended well beyond kickboxing. Holzken tested himself in professional boxing, where he held multiple regional titles, and later ventured into MMA, competing under the ONE Championship banner. While mixed martial arts was never his primary domain, his willingness to step outside his comfort zone further cemented his reputation as a true martial artist.
Holzken’s career wasn’t defined solely by wins and losses. It was defined by professionalism, longevity and respect. Promoters trusted him, opponents respected him, and fans knew they were guaranteed a high-level striking display whenever he fought. In an era where careers often burn bright and fade fast, Holzken endured.
Now stepping away from competition, Nieky Holzken leaves behind a legacy that will be difficult to replicate. He exits the sport not as a cautionary tale, but as a blueprint, proof that discipline, evolution and love for the craft can sustain excellence over time.
While the gloves are now hung up, Holzken’s influence will continue to echo through gyms, highlights and the fighters he inspired along the way. For a generation of strikers, Nieky Holzken wasn’t just a champion. He was the standard.
