On December 30, 2017 Jones announced that he would return to the Bay Center in Pensacola, Florida to headline the Island Fights 46 on February 8, 2018. Jones had previously headlined Island Fights, which is a show that included both boxing and MMA bouts. Speaking of the event, Jones said, "My last day at the Bay. It's my last one for the bayfront ... Civic Center, Pensacola, Bayfront Arena, whatever you want to call it. So if you want to come to see my last day in Pensacola, be there February 8. That's my last one there." He stated it would be his final fight. Jones announced Scott Sigmon (30-11-1, 16 KOs) as his opponent for the 10 round bout. Jones ended his boxing career defeating Sigmon via a one-sided 10 round unanimous decision, also winning the vacant World Boxing Union cruiserweight title in the process. All three judges scored the fight 98-92 in favour of Jones. Jones started off the better boxer landed upper cuts and hooks and remained in control throughout the fight. Jones landed an uppercut in round 5 which knocked Sigmon's mouthpiece out. In round 6, Sigmon began throwing more punches, although they were weak combinations easily blocked by Jones. Jones was also able to counter most of the shots Sigmon threw. After the fight, Jones stated he had fought with a bicep injury. He also called for a boxing match against 42-year-old former UFC middleweight champion Anderson Silva. In the post-fight interview, he said, "I knew Scott was tough, I knew Scott was game and I knew Scott would keep coming. However, I don't make excuses, but last week I tore my biceps in my left arm again and I refused to pull out. Other than that [fight], chapter closed."