Ken Griffey Sr. and Jr. become the first father-son duo to ever play together

ESPN - On this date in 1990, Ken Griffey Sr. and Ken

Ken Griffey Sr. and Ken Griffey Jr. Make Father-Son History With Back-to-Back Home Runs - FanBuzz

ken griffey father & son Values - MAVIN

Ken Griffey Jr. and Sr. hit back-to-back home runs

August 31, 1990: Ken Griffey Jr. and Sr. get back-to-back hits in father-son debut with Mariners – Society for American Baseball Research

Ken Griffey Sr Talks Prostate Cancer – Coping with Cancer

Father's Day: Ranking MLB's 10 best father-son duos, as Bonds and Griffey battle for top spot

August 31, 1990: Ken Griffey Jr. and Sr. get back-to-back hits in father-son debut with Mariners – Society for American Baseball Research

Today In 1990: Ken Griffey Sr. & Ken Griffey Jr. of the Seattle Mariners become the first and only father-son duo to hit a HR in the same major league game with

Ken Griffey Sr. and Ken Griffey Jr. Make Father-Son History With Back-to-Back Home Runs - FanBuzz

The Junior Junkie: the Baseball Cards of Ken Griffey, Jr. and Beyond: Happy Father's Day: the Griffeys on Cardboard

Griffey turns 46: 'The Kid' through the years