Harmon Killebrew Harmon Killebrew was the epitome of raw power. His 573 career roundtrippers rank fifth on the all-time list and second only to Babe Ruth among American League sluggers. Over his 22-year career with Washington, Minnesota and Kansas City, he tied or led the American League in home runs six times, belted 40 or more on eight occasions, and knocked in 100 or more runs nine times.