The Tour de France will have no official winner for the seven races from 1999 to 2005 if Lance Armstrong is stripped of his victories by the International Cycling Union.

In an interview with The Associated Press on Friday, Tour director Christian Prudhomme called the U.S. Anti-Doping Agency's report on Armstrong "damning." It raises doubts, he said, about "a system and an era."

Tour officials are still waiting on the UCI's decision on whether to go along with USADA's decision to ban Armstrong for life and erase his racing results. A spokesman for the sport's governing body, Enrico Carpani, said it was "too early to say" what would happen. The UCI must decide by the end of the month whether to appeal USADA's ruling.