This article is part of a collaboration with iQ by Intel. In the aftermath of one professional player’s admission to using Adderall, the Electronic Sports League (ESL) is cracking down on performance-enhancing drugs by instituting a new set of standards and tests, positioning the league as a role model for professional sports leagues of all stripes. When Oakland Athletics homerun slugger Jose Canseco released his tell-all biography Juiced: Wild Times, Rampant ‘Roids, Smash Hits and How Baseball Got Big in 2005, it landed like a bombshell. The book sparked one of the largest drug scandals in the history of professional sports.…