Ken Griffey Sr. and Ken Griffey Jr. are father and son baseball players who both had successful careers in Major League Baseball. Ken Griffey Sr. played for the Cincinnati Reds, New York Yankees, Atlanta Braves, and Seattle Mariners from 1973 to 1991. Ken Griffey Jr. played for the Seattle Mariners, Cincinnati Reds, and Chicago White Sox from 1989 to 2010. Both Griffeys were known for their power hitting and defensive prowess, and they are the only father-son duo to have both been inducted into the Baseball Hall of Fame.