Punk falters in debut as Gall wins by submission

 The odds were against CM Punk succeeding in his first mixed martial arts bout, but that didn’t stop the former WWE superstar from making the walk to the Octagon to face Mickey Gall Saturday night at Quicken Loans Arena in Cleveland. And while Gall secured the first-round submission victory in dominant fashion, Punk remained unbowed in defeat.“In life, you go big or go home,” Punk said. “I like to take challenges. This was a helluva mountain to try to climb, and I di