Earlier this week I blogged about the fact that European referees will not be tested for doping. But they should summon players to be tested if there’s suspicion of using performance enhancing drugs. Referees have an active task next season when they suspect players of using doping, is what the UEFA Anti-Doping Regulations say. “If doping is suspected, the UEFA match delegate and/or the referee and/or the DCO are entitled to summon additional players to be tested.” I was a bit surprized by that. How can a referee recognize doping or use of performance enhancing stuff? I checked out the website of the World Anti-Doping Agency (WADA) and found a…