Bangaki abaphumelele iTour de France abaphucwe impahla? Okudume kakhulu, uLance Armstrong waphucwa iziqu zakhe eziyisikhombisa zeTour ngokusetshenziswa kwezidakamizwa. U-Alberto Contador ulahlekelwe isicoco sango-2010 kwathi uFloyd Landis waba ngompetha bango-2006. Abaningi abanye abaphumelele, kusukela ngasekupheleni kweminyaka yama-1990s, okubalwa kubo uMarco Pantani, uJan Ullrich noBjarne Riis, nabo babanjelwe amahlazo okusebenzisa izidakamizwa.