Derrick Lewis' flaws are probably going to keep him from becoming a serious heavyweight contender.
But woe be to the opponent who finds himself on the wrong end of "The Black Beast's" heavy hands.
Lewis survived a first-round submission attempt by South African veteran Ruan Potts, then went on to bludgeon his foe. Lewis won via second-round TKO over Potts on Saturday night in at UFC 184 at Staples Center in Los Angeles. The stoppage came at 3:18.
Lewis dropped Potts in the first round, but walked right into a deep leg lock -- one fight after walking straight into a Matt Mitrione knockout. But the Houston native showed poise and rolled with it several times before finally breaking free.
Then he unleashed the onslaught. Potts appeared to have enough by the end of round one. He took more of a beating in round two, as referee Jarin Valel let things go on for way too long. Lewis unleashed a ground-and-pound assault until the fight was finally waved off.
"That fight should have been over with in the first round," said Lewis (12-4), who has scored 11 of his 12 wins by knockout or TKO. He's won eight of his past nine fights.