UBERLANDIA, Brazil – Some nights all you need is a couple good takedowns, some decent ground-and-pound and one solid submission. This was just such a night for  Colby Covington (7-0 MMA, 2-0 UFC), who wore down  Wagner Silva (3-2 MMA, 0-2 UFC) on the mat before sinking a rear-naked choke to force the finish at the 3:26 mark of Round 3.