About Wim van Est
Willem "Wim" van Est was a Dutch racing cyclist. He is best known for being the first Dutch cyclist to wear the yellow jersey as leader of the general classification in the Tour de France of 1951, and for falling into a ravine while wearing it. His first major victory came in 1950, when he won the 600 km Bordeaux–Paris race. He won the stage and gained 19 minutes on the leader, enough to move up to first place in the general classification.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.