![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://ca-times.brightspotcdn.com/dims4/default/15dddb5/2147483647/strip/true/crop/1374x916+538+29/resize/840x560!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F65%2Fea%2Fe837f4d426bc63aac5e126e1778a%2Fyankees-blomberg.JPG)
This day in sports: Fernando Tatis becomes first player to hit two grand slams in an inning - Los Angeles Times
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://fanbuzz.com/wp-content/uploads/sites/5/2023/02/Daniell-Gibson-softball.jpg?w=1056)
Fernando Tatis' Two Grand Slams Remain an Insane MLB Record
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://i.ytimg.com/vi/3kq_0U3nQX4/sddefault.jpg)
Cardinals @ Dodgers 4/23/99 (Fernando Tatis Two Grand Slams in One Inning)
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://fanbuzz.com/wp-content/uploads/sites/5/2021/05/Fernando-Tatis.png)
Fernando Tatis' Two Grand Slams Remain an Insane MLB Record
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://i.ytimg.com/vi/b68ykeEulHA/maxresdefault.jpg)
Fernando Tatis Jr. suspended 80 games for using Performance Enhancing Drugs - Gaslamp Ball
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://i.ytimg.com/vi/5tghdwMWEis/sddefault.jpg)
Cardinals @ Dodgers 4/23/99 (Fernando Tatis Two Grand Slams in One Inning)
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://fanbuzz.com/wp-content/uploads/sites/5/2021/05/Tatis-Jr..png)
Fernando Tatis' Two Grand Slams Remain an Insane MLB Record
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://img.mlbstatic.com/mlb-images/image/private/t_16x9/t_w1024/mlb/f7vhgan2chzvdl0fv0gx)
Fernando Tatis Jr. homers on dad's anniversary
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://i.ebayimg.com/images/g/dugAAOSw7adk86Xa/s-l1600.jpg)
1999 FERNANDO TATIS HITS 2 GRAND SLAMS IN 1 INNING🔥MLB RECORD TICKET🎟️4/23 PSA
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://fanbuzz.com/wp-content/uploads/sites/5/2023/05/Gary-Sheffield-Son.jpg?w=1056)
Fernando Tatis' Two Grand Slams Remain an Insane MLB Record
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://img.mlbstatic.com/mlb-images/image/private/w_250,h_250,c_thumb,g_auto,q_auto,f_jpg/mlb/zpcbpyjs329qvqjhif3e)
Tatis' two slams in one inning, 04/23/1999
![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](https://bloximages.newyork1.vip.townnews.com/stltoday.com/content/tncms/assets/v3/editorial/5/8f/58ff837f-d255-5e14-bba2-adaf44cad1e0/5addcf3b3d55a.image.jpg)
An electrifying moment': The night Fernando Tatis hit two grand slams in the same inning
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Fernando Tatis Jr. suspended 80 games for violating MLB's PED policy - The Washington Post