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

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Mariners PR on X: On Sept. 14, 1990, Ken Griffey Sr. and Ken Griffey Jr. made history as they became the first father-son duo to hit back-to-back home runs. #BHM /

Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball

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

Sept. 14, 1990: When the Griffeys made history with back-to-back homers

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Ken Griffey, Jr., Biography, Statistics, & Facts