Griffey stars in debut for Mariners

August 31, 1990: Ken Griffey Jr. and Sr. get back-to-back hits in father-son debut with Mariners – Society for American Baseball Research

April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie Robinson on 50th anniversary – Society for American Baseball Research

Ken Griffey, Jr., Biography, Statistics, & Facts

On This Date: Mariners Select Ken Griffey Jr. #1 Overall in 1987 Draft, by Mariners PR

Ken Griffey Jr. Autographed 1990 Topps Card #336 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS Stock #220301 - Mill Creek Sports

Ken Griffey Jr. Autographed Official MLB Baseball Seattle Mariners HOF 16 Beckett BAS Witness Stock #212463 - Mill Creek Sports

When Griffey Jr played for the Vermont Mariners

Hall of Famer Ken Griffey Jr. joins Seattle Mariners' ownership group - Puget Sound Business Journal

Future Stars Ken Griffey jr. Values - MAVIN

Ken Griffey Jr. Seattle Mariners Autographed White Nike Authentic Jersey with HOF 16 Inscription