By John Morgan, MMA Underground Highly anticipated heavyweight headliner ends in frustrating fashion in London. View the original article to see embedded media. For the second consecutive week, a highly anticipated UFC main event ended prematurely due to injury. This time, it was perennial heavyweight contender Curtis Blaydes who was awarded a TKO victory when fast-rising prospect Tom Aspinall had his knee give out just 15 seconds into the contest. The two clashed in the featured bout of Saturday’s UFC Fight Night 208 event, which streamed live on ESPN+ from The O2 Arena in London. In the bigg…