Stefan Matschiner is a former Austrian track athlete and sports agent, and a convicted enabler of blood doping. After a brief career as a middle-distance runner (competing in the 800 and 1500 metres for the University of Memphis, and in the 1500 metres event at the 2002 European Athletics Indoor Championships), he became a manager for a number of world-class athletes and helped some of them with blood transfusions and, allegedly, supplied them with EPO. He was arrested in 2009 and convicted in 2010. Since then he has published a tell-all book and given interviews about his career as a doping-enabler.