2004 — Ken Griffey Jr. hit the 500th home run of his career, off Matt Morris, to help the Cincinnati Reds beat the St. Louis Cardinals 6-0. 2007 — Sammy Sosa hit his 600th home run, making him the ...

2004 — Ken Griffey Jr. hit the 500th home run of his career, off Matt Morris, to help the Cincinnati Reds beat the St. Louis Cardinals 6-0.

For this, collectors would have to wait until 1991, and even then, if they blinked they'd probably miss the cards entirely. 1991 Bleachers 23 KT Ken Griffey, Jr.

This Date in Baseball, June 20 - Ken Griffey Jr. hits career HR #500 and Sammy Sosa hits career HR #600 June 20 1912 — The New York Giants outslugged the Boston Braves 21-12 with the teams ...