Erwin Fiedor was a good ski jumper and a decent cross country skier, making him a natural Nordic Combined competitor. His best year in that event came in 1964, when he won the Polish title, finished second in the famed Holmenkollrennen in Oslo, and placed 14th at the Innsbruck Olympics. After that year, his focus gradually switched to ski jumping. In 1966-67 he was still runner up at the Polish championships in the combined, while winning two titles on the large hill (1967-68) and one on the small hill (1968). Fiedor also contested the 1968 Olympics and the 1966 and 1970 World Championships, though without major results. After retiring, Fiedor took up coaching, taking among others Jan Legierski and Stanisław Kawulok under his wing.