Filed under: Bellator , Featured Videos , News , Videos For Ken Shamrock , it’s easy now to pinpoint where he went wrong in the final years of his career before he retired. Shamrock, who returns to the cage Friday at Bellator 138 for the first time since 2010, said he was squeezing blood from a stone when he continued to fight through the regional circuit in the late 2000s in hopes of reviving his career. “The thing I didn’t realize is the more I tried to fight, the more I tried to get through it, the worse I was getting,” he said. “I didn’t know that.” Bellator 138 takes place at Scottrade Center in St.