Fernando Tatís, Jr. who was born on January 1, 1975 is a U.S. Major League Baseball (MLB) professional player. Over his 11 year MLB career, he played for the Texas Rangers, St. Louis Cardinals, Montreal Expos, Baltimore Orioles, and the New York Mets.

Tatis, Jr. achieved a Major League record by hitting two (2) grand slam home runs in one inning during a game on April 23, 1999, becoming the only player in Major League history to do so.

Tatis,Jr. hit both of his grand slams as a member of the St. Louis Cardinals against the pitcher Chan Ho Park of the Los Angeles Dodgers. With his home run feat, he also set a Major League record with eight runs batted in during a single inning.

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