This Day in History: 1924-06-21

Exterminator, winner of the 1918 Kentucky Derby, concluded his seven-year racing career. Exterminator raced until he was nine, winning 50 of his 100 starts. He seldom carried less than 130 pounds in handicap races. Like other geldings Kelso, Forego, and John Henry, Exterminator improved with age, enjoying his greatest success when he was seven.