Hari left in anger and trashed his changing room. Six months later, Hari would get a rematch. Despite being knocked out, Hari was once again picked as a reserve fighter in the K-1 Grand Prix 2006 Finals against Paul Slowinski. He won the fight by unanimous decision. Hari then fought the Danish Nicholas Pettas at the K-1 Premium 2006 Dynamite!! event and broke Pettas's left shoulder in the second round with a right high kick. Hari got his revenge against Karaev at the K-1 World GP 2007 in Yokohama. Karaev and Hari's matchup was one of two bouts to qualify for the first K-1 heavyweight title match, scheduled on 28 April 2007 in Hawaii. Hari was knocked down in the second round and was just able to make it back to his feet when Karaev intended to finish the fight with a swinging punch which Hari ducked, and landed a right cross to score a KO. K-1 Heavyweight champion On 28 April, at K-1 World GP 2007 in Hawaii, Badr Hari and Yusuke Fujimoto fought for the newly introduced Heavyweight belt. Hari won the fight in 56 seconds with a kick to the chin. With the knockout Hari became the first ever K-1 Heavyweight champion. Hari got his chance for revenge against Peter Graham, whose turning kick had broken his jaw in 2006, in Hong Kong at the K-1 World Grand Prix 2007 in Hong Kong. He dropped Graham with a body punch and won by unanimous decision. After the bout, Hari and Graham seemed to bury the hatchet, hugging each other, although the two started taunting each other again at the post-fight press conference. In September 2007 at the K-1 World GP 2007 Final Elimination, Badr Hari beat the K-1 World GP 2007 in Las Vegas tournament champion, Doug Viney, by a second-round KO and qualified for his first K-1 World GP Final, held on 8 December in Yokohama, Japan. His winning streak came to an end with a decision loss to Remy Bonjasky, in the quarter finals. 2008 K-1 World GP 2008 All of Hari's wins in 2008 were by knockouts, by beating Ray Sefo in Yokohama, Glaube Feitosa (whom he defended his heavyweight title) in Fukuoka and Domagoj Ostojic in Hawaii. On his next fight in Seoul he qualified for the K-1 World Grand Prix 2008 Final by TKO win over the Korean Hong Man Choi. In