![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://securea.mlb.com/assets/images/2/0/8/146250208/cuts/GettyImages_260965_p0rcy8f2_3ppvgmnj.jpg)
On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://www.gainesville.com/gcdn/authoring/2004/06/21/NTGS/ghows-LK-de43604f-cc50-4b31-8d1b-6c2fbd83c285-f38e81e6.jpeg?width=1200&disable=upscale&format=pjpg&auto=webp)
The 500 club
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://static.moneymade.io/Money_Made_Ken_Griffey_Main_MO_c39c0383fa/Money_Made_Ken_Griffey_Main_MO_c39c0383fa.png)
Top 5 Most Valuable Ken Griffey Jr. Cards - MoneyMade
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://baseballhall.org/sites/default/files/styles/story_popup_thumb_540/public/Griffey%27s%20signed%20ball%20B129%2089.jpg.jpeg?itok=PuWl8miq)
Griffey Jr. and Sr. hit back-to-back home runs for Mariners
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://fox8.com/wp-content/uploads/sites/12/2023/07/AP23192074471396.jpg?w=1024)
Home Run Derby winner 2023
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://thumb.spokesman.com/aeNVFMaK0rl3Vz4qMWQ4ypa4Eqo=/2500x1875/smart/media.spokesman.com/photos/2004/06/21/spt21griffey_06-21-2004_Q51SCAC.jpg)
Griffey joins the club
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://www.si.com/.image/t_share/MTY4MjU2NzA5MzUyMzAyNDkz/1990-ken-griffey-sr-jr-back-to-back-home-runsjpg.jpg)
Hot Clicks: Classic Photos of Ken Griffey Jr. - Sports Illustrated
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://www.baseball-almanac.com/images/Ken_Griffey_Father-and-Son-Promo.jpg)
Ken Griffey Baseball Stats by Baseball Almanac
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://brobible.com/wp-content/uploads/2023/09/Ken-Griffey-Jr.-and-Sr.jpg?w=650)
Ken Griffey Jr. And His Dad Once Hit Back-To-Back Home Runs
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://baseballhall.org/sites/default/files/_MVS4633.jpg)
Griffey Jr. and Sr. hit back-to-back home runs for Mariners
![Ken Griffey, Jr. and Ken Griffey, Sr. become the first father-and-son combination to hit back-to-back home runs - This Day In Baseball](https://bloximages.newyork1.vip.townnews.com/wfmz.com/content/tncms/assets/v3/editorial/e/a3/ea30e166-696a-5631-9abb-a76369dd7167/64acd7801d1d6.image.jpg?crop=1100%2C578%2C0%2C89&resize=1100%2C578&order=crop%2Cresize)
Vladimir Guerrero Jr. joins Vlad Sr. as first father-son Derby