@baseballbybsmile: Happy 56th Birthday Ken Griffey Jr. ~ "Junior" was born in Donora, PA on this day in 1969! ⚾️ Here's his first career HR with the Seattle #Mariners! The 19-year-old #rookie hits it on the first pitch he ever sees at the #Kingdome! (1989) #MLB #Seattle #Legend #Baseball #History