At 20, Braves’ Acuna becomes youngest to hit postseason slam

October 8, 2018 GMT
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Atlanta Braves left fielder Ronald Acuna Jr. (13) hits a grand-slam homer against Los Angeles Dodgers starting pitcher Walker Buehler during the second inning in Game 3 of MLB baseball's National League Division Series, Sunday, Oct. 7, 2018, in Atlanta. (AP Photo/John Amis)
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Atlanta Braves left fielder Ronald Acuna Jr. (13) hits a grand-slam homer against Los Angeles Dodgers starting pitcher Walker Buehler during the second inning in Game 3 of MLB baseball's National League Division Series, Sunday, Oct. 7, 2018, in Atlanta. (AP Photo/John Amis)

ATLANTA (AP) — Atlanta Braves rookie Ronald Acuna Jr. has become the youngest player to hit a grand slam in the postseason.

The 20-year-old Acuna made history with his second-inning homer off Walker Buehler in the NL Division Series on Sunday night.

The previous youngest hitter with a postseason grand slam was Yankees Hall of Famer Mickey Mantle, who was 21 when he accomplished the feat against the Brooklyn Dodgers in the 1953 World Series.

Buehler issued a bases-loaded walk to Braves pitcher Sean Newcomb to force in a run. Acuna took three balls and a questionable called strike before pulling a 98-mph fastball from Buehler into the seats in left-center.

The homer gave the Braves, who trail 2-0 in the series, a 5-0 lead. The five second-inning runs were the first of the series for Atlanta.