Roel Mannaart

Manaart beat Semmie Onoiafie at Fighting Rookies in May 2016. He won the fight by a second round TKO. He would notch up three more wins in the Dutch circuit, defeating Michael Lorenz, Thomas Bridgewater and Nico Pereira Horta.^[5][6]

Mannaart participated in the 2017 K-1 Heavyweight Grand Prix, being scheduled to fight Masahiro Iwashita in the quarterfinals.^[7] He beat Iwashita by a first round knockout, but lost to Ibrahim El Bouni by knockout in the semifinals.^[8]

Four months later, Mannaart was scheduled to fight Antonio Plazibat for the K-1 Heavyweight title at K-1: K'FESTA.1.^[9] Roel won the fight by unanimous decision.^[10]

Mannaart subsequently signed with Glory as well, and fought Daniel Škvor at Glory 59: Amsterdam. He beat Skvor by unanimous decision.^[11] In his next fight with Glory, Mannaart was scheduled to fight Kirill Kornilov, whom he beat by unanimous decision.^[12]

Mannaart was scheduled to defend his K-1 title against Chris Bradford, at K-1 World GP 2019 Yokohamatsuri.^[13] He knocked Bradford out in the first round.^[14]

Roel Mannaart returned to Glory at Glory 75: Utrecht to fight Sergej Maslobojev.^[15] Maslobojev won the fight by a first round TKO, with Mannaart suffering a broken jaw during the bout.^[16]

Following the loss to Maslobojev, Mannaart returned to K-1 to defend his Heavyweight title in July of 2025. He would face former K-1 Cruiserweight champion, K-Jee. Mannaart won the fight via KO in the second round, dropping K-Jee multiple times, before finishing him with low kicks.^[17]

• K-1
  • 2018 K-1 World GP Heavyweight Championship
    • Two successful title defenses

• List of male kickboxers
• List of K-1 champions