George Kenneth "Ken" Griffey, Jr. 11/21/69 Nicknamed "Junior" & "The Kid", is an American former professional baseball outfielder who played 22 years in the MLB for three teams (1989–2010). He spent most of his career with the Seattle Mariners & Cincinnati Reds, along with a short stint with the Chicago White Sox. A 13-time All-Star, Griffey was one of the most prolific home run hitters in baseball history; his 630 home runs rank as the sixth-most in the MLB.