Alejandro Marque (who was in bad form at the 2003 Olympics) tested positive for cocaine after the race which resulted him to loose a contract with the Sharks team for the 2004 season.
Alejandro Manuel Marque Porto (born 23 October 1981 in Pontevedra) is a Spanish cyclist, who currently rides for UCI Continental team Atum GeneralTaviraMaria Nova Hotel. Marque was in fine form at the 2013 Volta a Portugal, winning the ninth stage, a 35.6-kilometre (22.1-mile) individual time trial, before winning the race overall. However, Marque tested positive for betamethasone during the race. The result still stands, but Marque never went to the Movistar Team as a clause in the contract he had signed allowed the team to terminate the contract if there were any problems with doping. 
