Hands down, 7 consecutive Tour de France wins and a list of other wins prove it.
Armstrong Victories: 1992, First Union Grand Prix, GP Sanson, Longsjo Classic (1 stage win), Thrift Drug Classic, Tour de Ribera (4 stage wins). 1993, Thrift Drug Classic, Trofeo Laigueglia, 8th stage of the Tour de France, USPro Championship, West Virginia Classic (2 stage wins), World Road Championships. 1994, Thrift Drug Classic. 1995, Clasica San Sebastian, 18th stage of the Tour de France, Tour du Pont (3 stage wins), West Virginia Classic (1 stage win), Stage 5 Paris Nice. 1996, Tour du Pont (5 stage wins), La Fl che Wallonne. 1998, Rheinland-Pfalz Rundfahrt, Tour de Luxembourg (1 stage win), Cascade Classic. 1999, Tour de France (4 stage wins), Prologue Crit rium du Dauphin Lib r (ITT), Stage 4 Route du Sud, Stage 4 Circuit de la Sarthe (ITT). 2000, Tour de France (1 stage win), GP des Nations, GP Eddy Merckx, Stage 3 Crit rium du Dauphin Lib r (ITT), Bronze medal in the 2000 Summer Olympics Individual Time Trial, Men. 2001, Tour de France (4 stage wins), Tour de Suisse (2 stage wins). 2002, Tour de France (4 stage wins), Crit rium du Dauphin Lib r , Stage 6 Crit rium du Dauphin Lib r, GP du Midi-Libre. 2003, Tour de France (1 stage win and the Team Time Trial), Crit rium du Dauphin Lib r (Overall), Stage 3 Crit rium du Dauphin Lib r (ITT). 2004, Tour de France (5 stage wins and the Team Time Trial), Tour de Georgia (2 stage wins), Stage 5 Tour du Languedoc-Roussillon, Stage 4 Volta ao Algrave (ITT). 2005, Tour de France (1 stage win and the Team Time Trial)
There are a lot of people who call Lance Armstrong a doper even though there is no empirical evidence proving that Lance Armstrong ever illegally used performance enhancing drugs. A lot of these allegations are based on a conversation that Lance Armstrong had with a doctor during his cancer treatment where he admitted taking some steroids. Steroids are often used to treat cancer patients and human growth hormone is used to help cancer patients after cancer is gone. Repeated testing has always exonerated Armstrong from accusations that he used performance enhancing drugs to further his cycling career. The United States is not a big cycling nation and yet it has produced two of the best cyclists of all time, Lance Armstrong and Greg LeMond.