WASHINGTON (AP) - Nationals center fielder Bryce Harper has become the first teenager to hit a triple in a postseason game - and the second-youngest player to homer.

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The 19-year-old Harper tripled to drive in a run in the first inning, then hit a solo shot leading off the third, both against St. Louis Cardinals starter Adam Wainwright in Game 5 of an NL division series Friday night.

The only player younger than Harper, who turns 20 on Tuesday, to hit a home run in the postseason is Andruw Jones, who was about 19½ when he had two for the Atlanta Braves in 1996.

The previous youngest with a triple was 20-year-old Justin Upton for Arizona in 2007, according to STATS LLC.

Harper entered Friday in a 1-for-18 slump in these playoffs.