He was the most unexpected phenomenon—an unbeaten racehorse. The first racing superstar of the 20th century, Colin defied the odds, retiring with a perfect 15-for-15 mark.

Overcoming an ugly lump on his hock, bucked shins, and a series of infirmities as a youngster, when Colin hit the racetrack nothing slowed him down during the 1907-1908 seasons. The handsome seal-brown colt, who sported a star on his forehead with an elegant blaze, would be the last major racehorse to retire unbeaten in the United States until Personal Ensign in 1988.