WATCH: 9-plus great moments in Junior's career
Ken Griffey Sr. and Jr. go back-to-back
Ken Griffey Jr. retiring at age 40 – Delco Times
On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father
Vladimir Guerrero Jr completes father-son double with Home Run
S10 goes Bird Hunting when he rips into this classic 1980 Topps
Ken Griffey Sr. and Jr. make history! They hit BACK-TO-BACK home
Sept. 14, 1990: When the Griffeys made history with back-to-back
Ken Griffey Jr Once Rejected Yankees Over Childhood Dugout Incident
WATCH: Father & son Griffey hit back-to-back HRs
Griffey Jr. and Sr. hit back-to-back home runs for Mariners
Griffeys hit back-to-back home runs in 1990
Ken Griffey Jr. gives backstory of decades-long hatred of Yankees