The UFC’s first five round non-title fight happened last night in England, but it ended in the second round. Not with a bang, but a whimper. That’s not to say we didn’t get enough bang in the 10 minutes we did see. Chris Leben and Mark Munoz beat the crap out of each other at UFC 138 in an exciting back and forth battle. But in the end, a bad cut above Chris Leben’s eye forced an end to the fight between rounds 2 and 3.Leben was having issues with Mark Munoz’s wrestling and pace from the start…