He won a gold medal in the 400-meter hurdles at the 1952 Summer Olympic Games in Helsinki, Finland. Racing on a rain-soaked track, he set an Olympic record of 50.8 seconds, missing the world-best mark by a mere two-tenths of a second. He also won a silver medal as the third leg on the 4x400 relay team. He later established a world record of 51.6 in the 440-yard hurdles at the British Empire Games in London. Moore set Cornell records in the outdoor 440-yard dash (47.0) and the 400-meter intermediate hurdles (51.1). In 1949, he won the 440-yard dash at the NCAA championships, and in 1951, he helped a five-man Big Red team place second at the NCAAs. He won indoor Heptagonal titles in the 600-yard run and outdoor titles in the 440-yard dash in 1950 and '51. He won the AAU 400-meter hurdles in 1949 and set the American record (50.7) in this event at the Olympic tryouts in 1952. He never lost a race in the 400-meter and 440-yard hurdles during his outstanding track career. He finished second in the balloting for the Sullivan Award in 1952.
