Complex sentence: In 1972, Emerson was named United States Eventing Association's Rider of the Year and he was a member of the United States Three Day Eventing Team that won the gold medal at the 1974 Eventing World Championships.
Split into simpler sentences: In 1972, Emerson was named United States Eventing Association's Rider of the Year. He was a member of the United States Three Day Eventing Team that won the gold medal at the 1974 Eventing World Championships.