Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

1990's: Ken Griffey Sr. & Ken Griffey Jr. of the Seattle Mariners stand on the on deck circle. (Photo by John Cordes/Icon Sportswire) (Icon Sportswire via AP Images Stock Photo - Alamy

Ken griffey jr 1997 hi-res stock photography and images - Alamy

Seattle Mariners' Ken Griffey Jr. is greeted in the dugout after hitting a three run RBI homer to right field against the New York Yankees in the second inning at SAFECO Field

Ken griffey jr hi-res stock photography and images - Alamy

Seattle Mariners right fielder Ken Griffey Jr., right, and right fielder Ichiro Suzuki looks on during a spring training baseball practice, Thursday, Feb. 25, 2010, in Peoria, Ariz. (AP Photo/Charlie Neibergall Stock

Former Seattle Mariners player Ken Griffey Jr., left, makes a face as he waits for former pitcher Félix Hernández, right, to notice him taking a selfie during Hernández's induction into the Mariners

Seattle mariners ken griffey hi-res stock photography and images - Alamy

Seattle Mariners Ken Griffey Jr. Los Angeles Angels Wednesday, April 15, 2009, in the inning during a baseball game in Seattle. (AP Photo/Elaine Thompson Stock Photo - Alamy

Ken griffey jr seattle mariners hi-res stock photography and images - Alamy

Seattle Mariners' Ken Griffey Jr. during a baseball game against the Texas Rangers in Arlington, Texas, Friday, July 31, 2009. (AP Photo/Tony Gutierrez Stock Photo - Alamy