George Ken Kenneth Griffey Jr, Seattle Mariner Outfielder as a Rookie in 1989. Elected into the Baseball Hall of Fame in 2016 on the first ballot, MLB Stock Photo - Alamy

Ex-Mariners star Ken Griffey Jr. prepares to join baseball's greats in Cooperstown

Seattle Mariners Ken Griffey Jr. runs toward first after hitting a single off Texas Rangers starting pitcher Scott Feldman during the second inning of a baseball game Sunday, April 11, 2010, in

George Ken Kenneth Griffey Jr, Seattle Mariner Outfielder as a Rookie in 1989. Elected into the Baseball Hall of Fame in 2016 on the first ballot, MLB Stock Photo - Alamy

George Kenneth Ken Griffey Jr. attends a first pitch of the MLB Seattle Mariners VS Oakland

Seattle Mariners' Ken Griffey Jr. waves to fans after hitting a home run against the Los Angeles Angels in the fifth inning of a baseball game Wednesday, April 15, 2009, in Seattle. (

Ken Griffey Jr. elected to National Baseball Hall of Fame

MLB Hall of Fame: Ken Griffey Jr., Mike Piazza elected as 2016 class - Sports Illustrated

On this day in 1989: Mariners' Ken Griffey Jr. starts Hall of Fame career with double in first MLB at-bat

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

Ken Griffey Jr. elected to the Baseball Hall of Fame - Lookout Landing

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

Ken Griffey Jr, Seattle Mariners Stock Photo - Alamy

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

George Ken Kenneth Griffey Jr, Seattle Mariner Outfielder as a Rookie in 1989. Elected into the Baseball Hall of Fame in 2016 on the first ballot, MLB Stock Photo - Alamy

2016 Baseball Hall of Fame: Ken Griffey Jr, Mike Piazza elected - Sports Illustrated