Performance-enhancing drugs are nothing new to sports. When your physical abilities are the difference between victory and defeat, many athletes turn to banned substances to gain a crucial advantage. Now, it seems, the same practice is bleeding into eSports too. A top Counter-Strike: Global Offensive player has admitted that everyone in his former team, Cloud 9, were taking the psychostimulant Adderall during a professional tournament. In a video interview, Kory "Semphis" Friesen said: "The ESL (Electronic Sports League) comms were kinda funny in my opinion -- I don't even care, we were all on Adderall."