All you need to do is look at both Indurain's and Lance's results pre-EPO and compare it to what they did after. Indurain DNF'd a few and then finished one Tour around 85th place overall, and then almost miraculously jumped to 11th. All of a sudden, a 185 lb. time trial specialist was a world class climber. Lance never finished one. Then, they never lost another one, until Lance decided to make his ill-advised comeback. And even then he finished on the podium..