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.

In the 1980s and 1990s, Pat Riley and Phil Jackson dominated the National Basketball Association coaching ranks, accounting for 10 championships between them. But during the same time frame another basketball coach was even more dominant than the two NBA legends, he just chose to ply his trade in a different sport.