![April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research](http://dev.sabr.org/wp-content/uploads/2015/01/TatisFernando-Topps.jpg)
April 23, 1999: Fernando Tatis hits two grand slams in one inning – Society for American Baseball Research
![Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/81esgD2r4QL.jpg)
Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books
![Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51PhYiPYFkL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books
![MLB players blast baseball's 'unwritten rules' following Fernando Tatis Jr.'s 3-0 grand slam - CBSSports.com MLB players blast baseball's 'unwritten rules' following Fernando Tatis Jr.'s 3-0 grand slam - CBSSports.com](https://sportshub.cbsistatic.com/i/r/2020/08/18/55e5dfe0-ad45-4864-bac4-22224a1a9821/thumbnail/1200x675/7e8112301540a24a0bd7ec87117e107d/fernando-tatis-jr.png)
MLB players blast baseball's 'unwritten rules' following Fernando Tatis Jr.'s 3-0 grand slam - CBSSports.com
![Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books Grand Slam (Baseball Genius Series, Book 3): Tim Green, Derek Jeter: 9781508267058: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51PFolAHPJL._AC_UL320_SR214,320_.jpg)