Carlos Sastre
In cycling history riders from a single country won all three Grand Tours in a year on only three occasions. In 1964 with French riders Jacques Anquetil and Raymond Poulidor and in 2008 with Spanish riders Alberto Contador and Carlos Sastre. 2018 marked the only time different riders from the same country won all three Tours and this was British riders Chris Froome, Geraint Thomas and Simon Yates.