Ken Griffey Jr., Mike Piazza Join Hall of Fame
Has an MLB player ever worn their hat backwards during a game? - Quora
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Hall of Fame open to Griffey's hat backwards on plaque
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Ken Griffey Jr. crushes dreams, says no to backward hat on Hall
2016 Topps Now #281 Ken Griffey Jr. Commemorative Hall
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Warehouse shot in 1993 Home Run Derby helped fuel Ken Griffey Jr
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