PARIS (Reuters) - Lance Armstrong's success pushed Jan Ullrich to resume doping at the start of the last decade to give the German any chance of competing against his American rival, the 1997 Tour de France winner's mentor said on Friday. Under Rudy Pevenage's guidance, Ullrich won the race 15 years ago but finished second to Armstrong three times between 2000-03. The American won the race seven times in a row from 1999. "Did we have a choice? After the Festina scandal in 1998, we had stopped everything at (team) Telekom. ... More...