April 5, 2010; Oakland, CA, USA; Seattle Mariners right fielder Ken Griffey Jr. (24) before the game against the Oakland Athletics at Oakland-Alameda County Coliseum. Seattle defeated Oakland 5-3 Stock Photo - Alamy

Seattle Mariners' Ken Griffey Jr., Baltimore Orioles' Melvin Mora and umpire Jim Wolf look on as OriolesÕ Brian Roberts tags out the Mariners' Yuniesky Betancourt at third base in the seventh inning

Seattle Mariners right fielder Ken Griffey Jr., left, hugs left fielder Michael Saunders during a spring training baseball practice Thursday, Feb. 25, 2010, in Peoria, Ariz. (AP Photo/Charlie Neibergall Stock Photo - Alamy

The Mariners Retire Ken Griffey Jr.'s Number 24

The Griffey 50 1995 Walk-Off vs. Yankees

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 Stock Photo - Alamy

The Mariners Retire Ken Griffey Jr.'s Number 24

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

April 6, 2010; Oakland, CA, USA; Seattle Mariners right fielder Ken Griffey Jr. (24) before the game against the Oakland Athletics at Oakland-Alameda County Coliseum. Oakland defeated Seattle 2-1 in 10 innings Stock Photo - Alamy

The Mariners Retire Ken Griffey Jr.'s Number 24