Pikeur participated in the 2015
K-1 Super Welterweight Grand Prix. In the quarterfinals, he defeated Daiki Watabe by a second round KO. In the semifinals, he defeated
Sanny Dahlbeck, likewise by a second round KO. In the finals, Pikeur faced
Marat Grigorian, and lost the fight in the first round, by knockout. During Krush 65, Pikeur was scheduled to fight
Hiroki Nakajima for the
Krush Super Welterweight title. He won the fight by unanimous decision. He successfully defended his title three months later, during Krush 67, defeating Yoichi Yamazaki by knockout. He defended his title for the second time with a unanimous decision win against Yu Hirono. Pikeur took part in the 2017 K-1 Middleweight Grand Prix. He beat
Hinata by unanimous decision in the quarterfinals. He lost by KO, to the eventual tournament winner,
Chingiz Allazov in the semifinals. In his next fight, Jordann was scheduled to defend his Krush title against Yutaro Yamauchi. He beat Yamauchi by a second round KO. He defended his Krush title for the fourth time during Krush 93, when he was scheduled to fight
Hiromi Wajima. Pikeur won the fight by unanimous decision. In November 2018, Pikeur was scheduled to fight the future
K-1 Super Welterweight champion
Minoru Kimura. He beat Kimura by a third round TKO. During K'Festa 2, Pikeur beat
Masaaki Noiri by majority decision. Jordann was scheduled to defend his Krush title for the fifth time against Katsuya Jinbo during Krush 102. He won the fight by unanimous decision. He extended his winning streak with a knockout of
Kaisei Kondo in November 2019. Pikeur challenged
Yuta Kubo for the K-1 Welterweight title during K'Festa 3. Kubo won the fight by unanimous decision. ==Championships and awards==