Michael Rasmussen, the Dane who was kicked out of the 2007 Tour de France when he was wearing the race leader's yellow jersey, has admitted to a 12-year doping career and revealed he has been co-operating with authorities, including the US Anti-Doping Agency, about his drug links and cheating past.
Looking tired and stressed, Rasmussen sat alongside his existing team sponsors, Christina and Claus Hembo of Christina Watches-Onfone, as he told a press conference that he was quitting the sport immediately.
The 38-year-old, who was thrown off the 2007 Tour de France for failing to reveal his whereabouts to drug testers before the month-long tour event, ticked off a cocktail of drugs he used from 1998-2010.
Meanwhile, some of the biggest stars in baseball, as well as professionals from tennis and boxing, have been linked with an investigation into a doping clinic in Florida which could be the most significant drugs scandal to hit American sport since the Balco affair a decade ago.
Irvine will race the individual pursuit and the scratch race, events in which he took a silver medal at the World Cup in Glasgow last December.
Ryan, who is the reigning bronze medallist in the points race, will be racing in the individual pursuit, points race and scratch race, while Mullen will compete in the sprint event.
Pat Wall, Associate Professor of Public Health at UCD and ex-CEO of the Food Safety Authority, has been appointed chairman of Horse Sport Ireland (HSI).
The appointment came less than a week after legendary showjumper Eddie Macken withdrew from the interview process for the job of showjumping team manager.