Before the illegal downward elbow strikes that brought about his disqualification, Jon Jones first put Matt Hamill in real trouble with this leg trip takedown that turned the tide of the fight and, according to Hamill's trainer, broke his left shoulder.  Hamill still fought on after that point and did a surprisingly good job, considering the injury, of defending against the onslaught from Jones that soon followed.  That's why you can't really argue that it was the takedown and not the elbows that ended the fight.  What you could argue, however, is that Hamill got a lucky break when the illegal blows gave the ref a chance to take a look at him ...