This is the lead as it currently reads: Lance Edward Armstrong (born Lance Edward Gunderson, September 18, 1971) is an American former professional road racing cyclist and triathlete. He won the Tour de France seven consecutive times (1999-2005) but was stripped of those titles by the U.S. Anti-Doping Agency (USADA) and banned from cycling in 2012.

We have basically two things to consider: whether this is factually correct and whether it provides the proper emphasis. I'd say that the first clause of the second sentence is at the very least misleading since 1) there is now a consensus in the world at large that Armstrong did not properly win the Tour de France ever and since 2), as far as official racing he is concerned, he did not win the Tour de France at all. It would be far more accurate to say that Armstrong was once considered to have won the Tour de France seven times. This state of affairs is very unlikely to change. As for emphasis, at this point Armstrong is more known as a cheater and a fraud than as anything else. As time passes this is bound to  intensify. Since it is now obvious that Armstrong achieved his original fame by cheating and committing fraud, there is no reason he should not be more known as a cheater and a fraud than as anything else.