page_title: List of Major League Baseball players with a home run in their first major league at bat
section_title: Players
hierarchical_section_title: List of Major League Baseball players with a home run in their first major league at bat / Players
caption_attribution_description: English: Professional baseball player Mike Griffin as a member of the Brooklyn Bridegrooms in 1898
context_page_description: In baseball, a home run is credited to a batter when he hits a fair ball and reaches home safely on the same play, without the benefit of an error. One hundred and twenty-seven players have hit a home run in their first at bat of a Major League Baseball game to date, the most recent being Keibert Ruiz of the Los Angeles Dodgers on August 16, 2020. George Tebeau and Mike Griffin both hit home runs in their first at bats on April 16, 1887. Both players are recognized as the first player to homer in his first major league at bat because the exact time when each home run was hit is unclear.
  Luke Stuart, Walter Mueller, and Johnnie LeMaster hit inside-the-park home runs in their first at bats. Bill Duggleby, Jeremy Hermida, Kevin Kouzmanoff, and Daniel Nava hit grand slams; Kouzmanoff and Nava did so on the first pitch. Ernie Koy and Heinie Mueller were the first players to accomplish the feat in the same game, doing so for the Brooklyn Dodgers and Philadelphia Phillies, respectively, in the first inning of Opening Day in 1938. This was equalled in 2016 by Tyler Austin and Aaron Judge, who became the only players to achieve the feat as teammates and in back-to-back at bats.
caption: Mike Griffin was one of the first two players to hit a home run in their first major league at bat.
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