Career
He earned two medals in the 4 x 10 km at the FIS Nordic World Ski Championships with a gold (1974) and a silver (1970). Hessler was also part of the 4 x 10 km relay team that finished 6th at the 1972 Winter Olympics in Sapporo.
He earned two medals in the 4 x 10 km at the FIS Nordic World Ski Championships with a gold (1974) and a silver (1970). Hessler was also part of the 4 x 10 km relay team that finished 6th at the 1972 Winter Olympics in Sapporo.