A staple of the Ultimate Fighting Championship lightweight division, Donald Cerrone will test the waters at 170 pounds when he faces Alex Oliveira in the UFC Fight Night 83 main event on Sunday at the Consol Energy Center in Pittsburgh. Meanwhile, middleweights Derek Brunson and Roan Carneiro will lock horns in the co-main event. The rest of the six-fight main card features Dennis Bermudez-Tatsuya Kawajiri, Cody Garbrandt-Augusto Mendes, Chris Camozzi-Joe Riggs and James Krause-Shane Campbell. A welterweight clash pairing Tristar Gym export Alex Garcia with former King of the Cage champion Sean Strickland highlights the undercard. These are the UFC Fight Night “Cerrone vs. Oliveira” fighters, in pictures: