Roel Mannaart (born 10 February 1994) is a Dutch kickboxer. He currently competes in K-1, where he is the current K-1 Heavyweight Champion. He also competed for Glory. Mannaart was ranked as a top ten heavyweight by Combat Press between July 2019 and July 2021, peaking at #7. Kickboxing career 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. Mannaart participated in the 2017 K-1 Heavyweight Grand Prix, being scheduled to fight Masahiro Iwashita in the quarterfinals. He beat Iwashita by a first round knockout, but lost to Ibrahim El Bouni by knockout in the semifinals. Four months later, Mannaart was scheduled to fight Antonio Plazibat for the K-1 Heavyweight title at K-1: K'FESTA.1. Roel won the fight by unanimous decision. Mannaart subsequently signed with Glory as well, and fought Daniel Škvor at Glory 59: Amsterdam. He beat Skvor by unanimous decision. In his next fight with Glory, Mannaart was scheduled to fight Kirill Kornilov, whom he beat by unanimous decision. Mannaart was scheduled to defend his K-1 title against Chris Bradford, at K-1 World GP 2019 Yokohamatsuri. He knocked Bradford out in the first round. Roel Mannaart returned to Glory at Glory 75: Utrecht to fight Sergej Maslobojev. Maslobojev won the fight by a first round TKO, with Mannaart suffering a broken jaw during the bout. Championships and accomplishments 2018 K-1 Heavyweight Champion Kickboxing record |- style="text-align:center; background:#fbb;" | 2020-02-29 || Loss || align="left" | Sergej Maslobojev || Glory 75: Utrecht || Utrecht, Netherlands || TKO (Corner stoppage) || 1 || 1:48 |- style="text-align:center; background:#cfc;" | 2019-11-24 || Win|| align=left| Chris Bradford|| K-1 World GP 2019 Yokohamatsuri || Yokohama, Japan || KO (Punches)|| 1 || 2:19 |- ! style=background:white colspan=9 | |- style="background:#cfc;" |- align="center" bgcolor="#cfc" | 2018-12-08 || Win ||align=left| Kirill Kornilov || Glory 62: Rotterdam || Rotterdam, Netherlands || Decision (Unanimous) || 3 || 3:00 |- align="center" bgcolor="#CCFFCC" | 2018-09-29 || Win ||align=left| Daniel Škvor || Glory 59: Amsterdam || Amsterdam, Netherlands || Decision (Unanimous) || 3 || 3:00 |- align="center" bgcolor="#CCFFCC" | 2018-03-21 || Win || align=left| Antonio Plazibat || K-1 World GP 2018: K'FESTA.1 || Saitama, Japan || Decision (Unanimous) || 3 || 3:00 |- ! style=background:white colspan=9 | |- align="center" bgcolor="#FFBBBB" | 2017-11-23 ||