Career
He then made his K-1 debut at K-1 Grand Prix BIH 2004 in June 2004, losing to Josip Bodrozic. He did not return to the promotion until April 2006 when he took part in the eight-man tournament at K-1 Italy Oktagon 2006. He was defeated in the final by Sergei Gur after beating Ricardo van den Bos and Humberto Evora.
On May 21, 2011, he took part in the four-man tournament at SuperKombat World Grand Prix I in Romania.
He lost to Sergei Lascenko at the first stage via knock out due to a knee to the body. On July 30, 2011, Poturak faced Alain Ngalani for the IKA Super Heavyweight World Championship in Las Vegas, Nevada, United States. In the first round, Poturak knocked Ngailani to the canvas and continued to punch him on the back of his head when he was down.
However, the decision was later overturned by the Las Vegas Sports Committee and was ruled a no contest. He next faced Sebastian Ciobanu at the SuperKombat World Grand Prix 2012 IV on October 20, 2012 in Arad, Romania, with a wild card spot for the SuperKombat Final Elimination up for grabs.
He lost via unanimous decision He lost a split decision to Ibrahim Aarab on November 10, 2012 in Craiova, Romania in a non-tournament bout at the SuperKombat World Grand Prix 2012 Final Elimination.
He was then entered into the semi-finals of the competition against Ismael Londt after Badr Hari withdrew with a broken foot. He retired in round two after having his rib broken from a knee. He lost to Igor Jurković by unanimous decision at Final Fight Championship 6 in Poreč, Croatia on June 14, 2013.
Poturak announced his retirement just four days later, stating that he will have one last fight against Stefan Leko at Final Fight Championships 7 in his home town of Sarajevo on September 6, 2013.
On December 8, 2013 Dževad organised another tournament in his nativ Sarajevo, Bosnia and Herzegovina called Number limit K-1 rules, and he announced that this will be his last fight. He fought Mamoudou Keta in an exhibition bout.
At the end of first round Dževad took off his gloves and retired from the sport, fight was declared Number Contest.
