On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father
Ken Griffey Jr. - Wikipedia
On This Day In Sports: August 31, 1990: Griffey Sr. and Jr. Become the First Father/Son Duo to Play Together in The Majors
Ken Griffey Baseball Stats by Baseball Almanac
MORE
Happy Birthday to the Kid, by Mariners PR
On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history
OTD: Griffey Jr. and Sr. Play Together, #OTD in 1990, baseball fans witnessed the ultimate father & son moment in MLB history between the Griffey's., By Stadium
ESPN - On this date in 1990, Ken Griffey Sr. and Ken
Ken Griffey Jr. – Society for American Baseball Research
1991 Mother's Cookies Ken Griffey Jr K.Griffey Jr.& Sr. (Holding Gloves)
