MLB first father/son to play in same game

August 31, 1990

MLB first father/son to play in same game

Ken Grffey, Sr. and Ken Griffey, Jr. both played for the Seattle Mariners. On August 31, 1990, they became the first father/son team to play in the same game. On that occasion they hit back to back singles. Two weeks later (September 14) they hit back to back home runs.

http://www.omg-facts.com/Celebs/Ken-Griffey-Sr-and-Ken-Griffey-Jr-Hit-ba/52805