LOS ANGELES –  Ruan Potts didn’t have much to offer Derrick Lewis , who was able to take his time in the second round for a convincing TKO. Lewis (12-3 MMA, 3-1 UFC) had to survive a solid submission attempt from Potts (8-4 MMA, 0-3 UFC) in the first round, but tore through him with ease in the second. The heavyweight bout was part of the preliminary card of today’s UFC 184 event at Staples Center in Los Angeles. It aired on FOX Sports 1 following additional prelims on UFC Fight Pass and ahead of a main card on pay-per-view. Potts opened with an outside leg kick, but Lewis calmly stalked from the center and threw a body kick. Both fighters looked for kicks early, but 75 seconds in, Potts worked his way inside and the two clinched up.