Doubts over fairness of doping ban for sprinter

A doping case against an Irish sprinter has been thrown into doubt by a series of scientific articles that highlight inconsistencies and raise questions about the anti-doping system.

Steven Colvert was given a two-year ban by a Sport Ireland tribunal in July 2015 after he was deemed to have tested positive for synthetic EPO, a hormone that stimulates production of oxygen-carrying red blood cells.

The two-time Irish 200m champion has always denied doping, but until recently had received almost no media attention outside Ireland or scientific support.