There are comparisons to be drawn between two of sport's greatest fallen idols in recent years: Tiger Woods and Lance Armstrong. Both scaled the highest pinnacles of their respective sports, reaping the accolades and rewards that came with their achievements. Both cheated.
Tiger Woods, by his repeated womanising, cheated on his wife and family; he tarnished his own name and that of some of his sponsors who capitalised on his clean-living, family-man image.
However, Tiger never brought shame to his sport nor his colleagues on the professional golf circuit. He achieved his mastery through talent, iron will, practice and hard work and is trying to find his form of old, having returned to the professional circuit. His is an instance of, "how the mighty are fallen".
Lance Armstrong cheated in order to achieve his victories. He cheated in order to cover up what he knew was wrong. He has as a consequence brought shame to his sport and professional colleagues.