UFC veteran Chris Leben has officially decided to end his retirement and return to the combat sports world. While Leben will be facing a fellow veteran of the octagon in his big return, the fight will not be taking place under the banner of the Ultimate Fighting Championship (UFC). Taking to Instagram, Chris Leben has revealed that he has signed a fight contract with the World Bare Knuckle Fighting Federation for a match up against UFC veteran Phil Baroni. The fight will take place Oct. 20 in Casper, Wyoming. "Just signed my contract with the world bareknuckle fighting federation to fight Phil Baroni October 20 I’m back baby" https://www.instagram.com/p/BlWRhTAH3vY/?utm_sourceig_embed For more MMA news click here.