LAS VEGAS — Natan Levy stepped in on just two days’ notice at a higher weight class, but his performance didn’t suffer one bit. Levy (6-0) secured a UFC contract when he submitted Shaheen Santana in the third round at Dana White’s Contender Series 35 at the UFC Apex, competing at a catchweight of 160 pounds. After not having to drain himself down to his usual fighting weight of 145 pounds, Levy sees the perks of competing at a weight class above