The winner of the first (1903) TdF won again the second year but was disqualified for taking a shortcut - LINK. The 1904 TdF was riddled with scandals and in all NINE riders were disqualified, five months after the race was over.

OK, Tour trivia question: LANCE! retired on a win... after his last win he did not try again and lose. Who was the last rider before him to do that?

edit - this is not a trick question about Flandis.