Lt. Bob Borg placed fourth in the 1948 Olympic individual dressage competition, leading the U.S. to the silver medals in the team event, and he was desperately unlucky not to win the individual gold medal. After an almost faultless round which would have given him the Olympic title, one judge placed him first, and another equal second but a third placed him ninth and awarded the first three places to riders from his own country. Borg also competed in the Olympic dressage in 1952 and 1956, finishing 11th and 17th, respectively. At the 1955 Pan American Games he won silver in the individual dressage. He trained the U.S. Three Day Team from 1951 until 1956, but in 1960 he met with a riding accident which left him partially paralyzed. However, he was able to continue his activities at his farm in Michigan, working from a special platform he had devised.