Tyrone Spong has suffered an injury and he is off the World Series Of Fighting 26, replacing him against Jake Heun will be Clinton Williams. Heun has won two of three under the WSOF banner, last defeating Davin Clark by submission at the WSOF 22. Williams will be making his WSOF debut in this fight, but he is the current Steel Fist Fight Night Middleweight Champion. World Series Of Fighting 26 takes place on December 18th from The Chelsea At The Cosmopolitan in Las Vegas, Nevada with Lance Palmer and Alexandre Almeida headlining.