In 1927, Carr set new indoor and outdoor world records. In February he took the indoor record up to 13-7⅛, which he improved one week later to 13-9¼. In May, as a student at Yale and prior to the use of modern equipment, Carr was the first pole-vaulter in the United States to clear 14 feet at the IC4A outdoor. In 1928, at the AAU indoor, he vaulted 14-1 inch to become the first to clear 14 feet indoors.
In 1928, Carr lost his world outdoor record to the 1924 Olympic champion, Lee Barnes. At the Olympics, however, Carr took the gold medal, with Barnes finishing fifth. Carr, a Yale graduate, had a fine record in major championships, winning the AAU indoor twice, the IC4A outdoor three times, and the IC4A indoor twice. He never placed better than third at the AAU outdoor meet.
Carr eventually went into the lumber business in Oakland, California, and became president of the Sterling Lumber Co.