April 23, 1999, remains one of the most iconic dates in Major League Baseball history. On that day, a St. Louis Cardinals player accomplished what statistics deemed almost impossible: hitting two grand slams in the same inning. Fernando Tatís Sr., a name that was relatively unknown at the time, entered the history books with a performance no one else has ever matched. Let’s dive into this legendary moment in baseball.
A wild inning that defied all logic
It all happened at Dodger Stadium during a matchup between the St. Louis Cardinals and the Los Angeles Dodgers. In the third inning, with the bases loaded, Tatís stepped up to the plate and launched a grand slam off pitcher Chan Ho Park. Incredible already. But what came next stunned the baseball world.
Later in the same inning, the Cardinals once again filled the bases. Tatís returned to the plate—facing the same pitcher—and hit another grand slam. The crowd was stunned. The broadcasters couldn’t believe what they were seeing. Tatís had done the unthinkable—twice in one inning.
According to some estimates, the odds of this happening were roughly 1 in 75 billion. Everything had to align perfectly: two plate appearances in one inning, the bases loaded each time, and home runs on both swings.
Eight RBIs in one inning: a second record
This double grand slam didn’t just make history for its rarity. It also allowed Fernando Tatís Sr. to record eight RBIs in a single inning, another MLB record that still stands. In mere minutes, he crushed the Dodgers’ hopes and etched his name in baseball lore.
Interestingly, Tatís was not a superstar at the time. He was a solid, dependable player, but not someone fans expected to rewrite the record books. This one inning changed everything. The Cardinals scored 11 runs that inning—mostly thanks to Tatís.
It’s a perfect example of how baseball can turn ordinary players into legends in an instant. And this moment remains unmatched to this day.
Humiliation for the pitcher, eternal glory for the hitter
The pitcher on the wrong end of this historic moment was Chan Ho Park. He became forever associated with this low point in MLB history, giving up two grand slams to the same batter in a single inning.
Despite having a respectable career with teams like the Dodgers and Rangers, Park’s name is inevitably tied to this record. For pitchers, being part of a negative record is a hard stain to erase.
This moment is a reminder that in sports, one player’s triumph can become another’s nightmare. While Tatís ascended to legendary status, Park had to carry the burden of this unique humiliation.
A legendary feat passed down to the next generation
What makes this moment even more fascinating is the legacy that followed. Tatís’s son, Fernando Tatís Jr., is now one of MLB’s most exciting young stars, playing for the San Diego Padres.
Known for his energy, showmanship, and talent, Tatís Jr. keeps his family’s name in the spotlight. Every time he shines, fans are reminded that his father holds one of baseball’s most incredible records.
It’s rare for a unique feat like the 1999 double grand slam to remain so relevant, but with the continued rise of his son, Fernando Tatís Sr.’s name lives on through generations.
| Player Profile: Fernando Tatís Sr. | |
|---|---|
| Full name | Fernando Gabriel Tatís |
| Date of birth | January 1, 1975 |
| Place of birth | San Pedro de Macorís, Dominican Republic |
| Position | Third baseman / Left fielder |
| Throws / Bats | Right / Right |
| MLB debut | July 26, 1997 with the Texas Rangers |
| Final MLB game | October 4, 2010 with the New York Mets |
| Main teams | Texas Rangers (1997–1998) St. Louis Cardinals (1998–2000) Montreal Expos (2001–2003) Baltimore Orioles (2006) New York Mets (2007–2010) |
| Career stats (MLB) | Batting average: .265 Home runs: 113 Runs batted in: 448 |
| Notable achievement | Only player in history to hit two grand slams in the same inning (April 23, 1999) |
| Son | Fernando Tatís Jr. (San Diego Padres star) |