Team Sky sports director Steven de Jongh has quit after three years following his admission that he took a banned substance earlier in his career, the British team said on Monday.
Cycling's Team Sky could suffer in the short term from losing staff because of its anti-doping stance but that it is a price worth paying, team head Dave Brailsford said on Tuesday.
Alberto Contador's Tour de France chances suffered an early blow on Saturday when the Spaniard crashed with about 80 km left in the first stage.