LAS VEGAS – Mike Pierce was well on his way to a snoozer of a win when his hands did the job quicker. Pierce smothered David Mitchell before landing a left hand that set the end in motion midway through the second frame. The welterweight bout opened up today’s UFC 162 event at MGM Grand Garden Arena in Las Vegas. It streamed on Facebook ahead of additional prelims on FX and a main card on pay-per-view. From the opening bell, Pierce refused to let Mitchell get any space to strike, and the two spent the bulk of the first frame in the clinch.