Las Vegan Bryce Harper gets 100th MLB homer with grand slam — VIDEO

Washington Nationals' Bryce Harper pumps his fist as he takes a curtain call after he hit a grand slam during the third inning of an baseball game against the Atlanta Braves, Thursday, April 14, 2016, in Washington. This was Harper's 100th home run of his career. (Nick Wass/AP)

Washington Nationals' Bryce Harper pumps his fist as he takes a curtain call after he hit a grand slam during the third inning of an baseball game against the Atlanta Braves, Thursday, April 14, 2016, in Washington. This was Harper's 100th home run of his career. (Nick Wass/AP)

Washington Nationals' Bryce Harper watches his grand slam during the third inning of an baseball game against the Atlanta Braves, Thursday, April 14, 2016, in Washington. This was Harpers' 100th home run of his career. (Nick Wass/AP)

Washington Nationals' Bryce Harper (34) celebrates his grand slam with Daniel Murphy during the third inning of an baseball game against the Atlanta Braves, Thursday, April 14, 2016, in Washington. This was Harper's 100th home run of his career. Also seen is Washington Nationals center fielder Chris Heisey (14). (Nick Wass/AP)

WASHINGTON — Washington Nationals slugger Bryce Harper has hit a grand slam to become the eighth-youngest player to reach 100 career home runs.

The reigning NL MVP hit the mark Thursday with his third-inning slam at home against Atlanta.

Harper got to 100 homers at 23 years and 181 days old. Hall of Famer Mel Ott was more than a full year younger when he became the youngest to do it.

The homer was Harper’s third of the season and gave the Nationals a 4-1 lead. He turned on a fastball from Julio Teheran and sent it sailing over the out-of-town scoreboard in right field.