Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

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

Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

Ken griffey jr seattle mariners hi-res stock photography and images - 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, Seattle Mariners Stock Photo - Alamy

Seattle Mariners Ken Griffey Jr. (24) in action during a game from the1996 season against the Milwaukee Brewers at County Stadium in Milwaukee, Wisconsin. Ken Griffey Jr. played for 22 years with

Seattle Mariners Ken Griffey Jr. watches his single to right field in the eighth inning against the Detroit Tigers in a MLB baseball game Friday, April 17, 2009, at Safeco Field in