He competed at the
1948 Summer Olympics in
London, where he received a gold medal on the
horizontal bar, a silver medal in team combined exercises, and a bronze medal on the
parallel bars. He also won four medals at the
1952 Summer Olympics in
Helsinki. He was the originator and namesake of stalder circles, now a common skill on both the horizontal bar and the
uneven bars. He was inducted posthumously to the
International Gymnastics Hall of Fame as a member of the Class of 2024. ==References==