The best of 'The Natural,' Ken Griffey Jr. - Sportspress Northwest
On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history
In 1990, the Griffeys became the first father-son pair to play in the same Major League lineup
Ken Griffey Jr. Takes His Rightful Place in the HOF - Sports Collectors Digest
Ken Griffey Sr. and Jr. become first father/son combo to appear in the same lineup
What father and sons have been in professional sports at the same time? - Quora
Ken Griffey Sr.: A look back at the member of the Big Red Machine
Out of Right Field: To Ken Griffey Jr., Father's Day always meant more
Ken Griffey Jr. elected to Hall of Fame
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