World Championship Tournament in Tokyo, Japan on 21 December 2013. Verhoeven was scheduled to make his professional boxing debut against Nikolaj Falin at Mix Fight Gala XV in Darmstadt, Germany on 26 April 2014 but his opponent was changed to János Finfera for undisclosed reasons. Verhoeven defeated the Hungarian by second-round knockout. He rematched and defeated Daniel Ghiță via unanimous decision in a bout for the vacant Glory Heavyweight (+95 kg/209 lb) Championship at Glory 17: Los Angeles in Inglewood, California, US on June 21, 2014. Zimmerman trilogy Verhoeven was scheduled to make the first defense of his Glory Heavyweight title against Errol Zimmerman at Glory 19: Virginia, in what would be their trilogy match. Each fighter had previously won once, Verhoeven by decision, and Zimmerman by knockout. Verhoeven kept to out fighting, looking to deal damage with body kicks and straight shots, while keeping his opponent at distance with snap kicks and teep kicks. With a minute left in the first round, both fighters engaged in a wild exchange, with Errol being dropped at the end of it. He was once again dropped with a front kick, with half a minute left in the round. The fight ended in a technical knockout, as Zimmerman injured his left knee, following a missed spinning back kick. Adegbuyi fights For his second title defense, Verhoeven was scheduled to fight the former SUPERKOMBAT Heavyweight GP winner Benjamin Adegbuyi at Glory 22: Lille. Adegebuyi managed to stun the champion in the first round, before Verhoeven took over in the second. He dominated the rest of the affair, picking up in both volume and pace as the fight went on, while Adegbuyi slowed down. Rico won the fight by unanimous decision (49–47, 49–47 and 50–45). After this loss, Adegbuyi won the 2015 Glory Heavyweight Contender Tournament, to once again earn a title shot at Glory 26: Amsterdam, six months after their first fight. The second fight ended with a first-round KO, with Verhoeven quickly overwhelming his opponent and knocking him out with right hook. After this fight, Verhoeven changed his nickname from "Prince of Kickboxing" to "King of Kickboxing". Verhoeven was scheduled to defend his title for the fourth time just three months later, at Glory 28: Paris, against the newly crowned FFC Heavyweight champion Mladen Brestovac. Just as with his two previous title bouts against Benjamin Adegbuyi, Verhoeven was thoroughly dominant, despite a slow