Two fighters from the UFC’s back-to-back events during International Fight Week failed their drug tests. Kevin Casey at UFC 175 and Robert Drysdale at The Ultimate Fighter 19 Finale each was tested following their respective bouts, and each failed, according to an initial report by MMAJunkie.com . Nevada Athletic Commission Chair Francisco Aguilar confirmed the news to MMAWeekly.com , saying that Casey tested positive for Drostanolone, while Drysdale’s result revealed an elevated Testosterone-to-Epitestosterone ratio. Both fighters are under a temporary suspension pending the NAC convening to take final  action.