Robert Korzeniowski

Korzeniowski is the most successful Olympic walker of all: 50km gold in Atlanta, Sydney and Athens, plus the 20km title in Sydney 2000, making him the only man to win both distances at one Games. His career began with a judges' disqualification in the closing stages of the 1992 Barcelona 50km, and the precise, legal technique he built afterwards is the reason he was never caught again on the biggest stage.