Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

February 1990: Seattle Mariners outfielder Ken Griffey Jr. (24) on the practice fields during spring training

Seattle Mariners' Ken Griffey Jr. during a baseball game against the Texas Rangers, Sunday, Aug. 2, 2009, in Arlington, Texas. (AP Photo/Tony Gutierrez 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

Griffey 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

Seattle Mariners' Ken Griffey Jr., watches his solo home run to center field in the fifth inning against the L.A. Angels at SAFECO Field in Seattle April 15, 2009. (UPI Photo/Jim Bryant

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., left, and Milton Bradley share a laugh in the dugout as the team takes a lead against the Minnesota Twins in the fourth inning during a baseball

KEN GRIFFEY JR.(Seattle Mariners) 1997.k9033jw. © Jerry Wachier/Globe Photos/ZUMA Wire/ZUMA Wire/Alamy Live News Stock Photo - Alamy

Seattle Mariners Ken Griffey Jr. during a spring training baseball game Friday March 12, 2010 in Peoria, Ariz. (AP Photo/Lenny Ignelzi Stock Photo - Alamy

Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy