Derek Boyle Flying Knee Knockout Ends Alex Popov Fight (Video)

Another weekend, another knockout by way of a kick to the head. Well, kind of. This time it was a knee, but those are just as fun.  During this week’s Rage Fighting Series event, Derek Boyle ended opponent Alex Popov’s night rather abruptly.  Once again it was hardly as punishing a blow as Vitor Belfort took from Anderson Silva, but the flying knee is always tough to execute.  Check out the Derek Boyle vs. Alex Popov fight video, courtesy of The Big Lead:

How does the flying knee stack up with the other knockout videos we’ve shown you over the past several months?