KO in the final second of the third round. It was a knockout that caused Fulton, who had never been knocked out, to regain consciousness about 5 minutes after the fight was stopped. Fulton later admitted to Arlovski in the locker room that he has never been hit that hard in all of his 300 bouts. ONE Fighting Championship In mid-July 2012, it was announced that Arlovski had signed with the Asia-based promotion ONE Fighting Championship. Originally Arlvoski was scheduled to fight Soa Palelei but Soa Palelei was later replaced with Tim Sylvia. The promotion quickly announced that Arlovski would face Tim Sylvia in his debut, marking the fourth time the two fighters had faced each other. Arlovski and Sylvia faced off at ONE Fighting Championship: Pride of a Nation on 31 August 2012, in Manila. The fight between Arlovski and Tim Sylvia ended in a no-contest due to an illegal soccer kick by Arlovski. According to ONE FC rules, soccer kicks are legal only if the referee clears the fighter to do so after determining the grounded fighter can still intelligently defend himself. Arlovski received no such clearance and the kick was therefore deemed illegal. Four days later, One FC eliminated this restriction. This rule change, had it been enforced prior to the bout, would have resulted in Arlovski winning by TKO. Arlovski had knocked Tim Sylvia down with punches before he landed the illegal kicks that caused the referee to stop the fight. World Series of Fighting Arlovski headlined the debut event from the World Series of Fighting against fellow Strikeforce veteran Devin Cole on 3 November 2012, at World Series of Fighting 1 in Las Vegas, Nevada. This event aired live on NBC Sports. He won the fight via TKO in the first round. Arlovski fought Anthony Johnson in the main event at World Series of Fighting 2 on 23 March 2013. He lost the fight via unanimous decision. Controversy arose after the fight when it was revealed that multiple rounds exceeded the five-minute time limit. The punch believed to have broken Arlovski's jaw was landed after the time at which the round should have ended. Arlovski next replaced an injured Anthony Johnson against Mike Kyle at WSOF 5 on 14 September 2013. He won the fight via unanimous decision. Independent promotions Arlovski faced Bellator veteran Mike Hayes at Fight Nights: Battle of Moscow 9 on 16