Ken Griffey Jr. came up with the idea of wearing No. 42 on April 15th. On the first Jackie Robinson Day when the number was worn league-wide (2009), Junior hit his 400th homer as a Mariner.

Ken Griffey Jr.: Star Rookie #1 [Rookie] 1989 Upper Deck The 1989 Upper Deck set, one of the most revolutionary and influential releases in modern baseball history, contains 800 cards.

Ken Griffey Jr. weighs on Aaron Judge's comment originally appeared on Athlon Sports. The legendary Ken Griffey Jr. unexpectedly entered the Yankees-Red Sox rivalry chat this week. Maybe he was ...