1915 Kentucky Derby

The 1915 Kentucky Derby was the 41st running of the Kentucky Derby. The race took place on May 8, 1915. Horses Kilkenny Boy, Phosphor, and Commonada scratched before the race. Regret, the first filly to ever win the Derby, generated significant publicity for the race, causing Churchill Downs president Matt Winn to observe that because of Regret's win "the Derby was thus made an American institution."