Spong returned to 95 kg to fight in the "" in New York City, New York, United States on June 22, 2013. He had a scare in the quarter-finals when he was dropped by Michael Duut soon after the bout started, although it was not counted by the referee. Just moments after returning to his feet, Spong landed a crushing right hand on Duut, knocking Duut out and ensuring Spong's passage to the semifinals against Filip Verlinden. The Verlinden match was a technical battle, with Spong outpointing the Belgian and taking a unanimous decision. A match with Danyo Ilunga awaited him in the final but it ended in a controversial and anticlimactic fashion. As the fight began, both fighters met in the center of the ring and Spong unloaded a flurry of punches. As Ilunga covered up and prepared to counter, referee Mufadel Elghazaoui jumped in and stopped the fight, giving Spong the TKO win at just sixteen seconds of the first round. Although, it was later revealed that there was a "no standing eight count" rule in effect at the event as per the New York State Athletic Commission's regulations, the stoppage was still deemed premature by much of the kickboxing community.