On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father

In 1990, the Griffeys became the first father-son pair to play in the same Major League lineup

Ken Griffey Sr.: A look back at the member of the Big Red Machine

Griffey Jr. and Sr. hit back-to-back home runs for Mariners

Ken Griffey Jr Biography

Ken Griffey Jr. - Wikipedia

Griffey family makes history 30 years ago It's been 30 years since Ken Griffey Sr. and Ken Griffey Jr. both suited up for the Seattle Mariners, becoming the first father and

Ken Griffey Jr. Takes His Rightful Place in the HOF - Sports Collectors Digest

Baseball Sisco Kid Style: The Griffeys Play In The Same Game For First Time August 31, 1990

Ken Griffey Jr. News, Biography, MLB Records, Stats & Facts

Five things to know about Ken Griffey Jr.'s career

On this day in 1990, Ken Griffey Sr. and Ken Griffey Jr. became the first father/son duo to play together in a Major League game!

This Day in Sports: A Griffey Family Reunion in Seattle - ESPN - SportsCenter.com- ESPN

Ken Griffey Jr. - Wikipedia

DraftKings on X: On Aug. 31, 1990, 40-year-old Ken Griffey Sr. and 20-year-old Ken Griffey Jr. became the first father and son to play as teammates in an MLB game. Griffey Sr.