Hamilton's defence

Late Monday, April 18 the US Anti-Doping Agency handed down its decision in the Tyler Hamilton case. The majority of the three-man arbitration panel found that Hamilton had used banned homologous blood-doping methods in the Vuelta a Espana last year, and Hamilton now faces a two-year ban. Combined with the ProTour ethical code regulation that teams should not hire riders found guilty of doping offences for a further two years after their bans, that almost certainly means the end of the 34-year-old's career. Jeff Jones takes a look at the arguments Hamilton himself put forward in his defence.

Although Tyler Hamilton has been relatively quiet about his hearing up until now, his latest diary entry on his website, www.tylerhamilton.com, goes into some detail about the happenings of the last few months. He started by writing about the anomalous blood values measured by the UCI in the spring: Hamilton was warned several times by the UCI for having a high Stimulation Index (SI) or "off score", which is calculated from the rider's plasma haemoglobin and reticulocyte (immature red blood cells) levels.