PHILADELPHIA – A systematic breakdown of Edson Barboza is Justin Gaethje ’s immediate goal. Usually, wins put you opposite winners in the UFC. And if Gaethje beats Barboza at Saturday’s UFC on ESPN 2 event in Philadelphia, that should get him a big fight. But Gaethje’s hope is to get a rematch. So strong is Gaethje’s desire to get another crack at Dustin Poirier , he dismisses a bout with the suddenly surging Anthony Pettis. “As much as I respect Pettis, I won’t be looking for that fight after I win here,” he told MMA Junkie at a media day prior to Saturday’s event at Wells Fargo Center.