A featherweight match between Charles Oliveira and Estevan Payan has been added to the UFC 166 fight card slated for Oct. 19 in Houston. Oliveira (16-4-1) debuted in the UFC as an undefeated fighter against Darren Elkins in August 2010, winning by submission.  He has gone 4-4-1 during his UFC tenure and is coming off back-to-back losses Cub Swanson and Frankie Edgar in his last two outings. Oliveira has faced nothing but top competition since arriving in the organization, but is in desperate need of a victory. Payan (14-4, 1 no contest) made his UFC debut against Jeremy Stephens at UFC 160 on May 25, losing by unanimous decision.  He’ll be looking to earn his first UFC win when he faces Oliveira. UFC 166 takes place at the Toyota Center in Houston on Oct