The following year, 1959, Simpson turned professional. Within a few years, he had established himself as one of the great riders in the pro peloton. In 1962, he became the ﬁrst British cyclist to wear the Maillot Jaune (the yellow jersey), which symbolizes the race leader in the Tour de France. Simpson only wore the yellow jersey for a single day, but even so, it was a remarkable moment in Tour history. At the time relatively few English or English-speaking riders raced the Tour. Three years later, Simpson won the world championship road race.