Murray is in action in the seaso - ending ATP World Tour Finals in London. Hoy won the last of his gold medals at the age of 36 .
London. Hoy is a six - time Olympic gold medal winner .
Murray is in action in the seaso - ending ATP World Tour Finals in London. Hoy , who is a six - time Olympic gold medal winner , won the last of his gold medals at the age of 36 .