7. Ken Griffey Sr. and Ken Griffey Jr.
Here we have another case of the father and son both getting to play on the same team together. The Griffeys became the first father-son duo to play on the same team when they appeared together for the Mariners in 1990. The elder Griffey was a three-time all-star and two-time World Series winner while playing with the Cincinnati Reds, and finished his career as a .296 hitter, having recorded over 2,100 hits. Junior quickly proved to be better than his old man, earning an all-star nod in his second season and in each of the next 10. By 2004, he had 500 home runs and surpassed his dad in hits too.
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