Watch: Harper breaks HR slump with 3rd-deck moonshot

Bryce Harper takes "long ball" to a new level.

With the Washington Nationals down 1-0 to the St. Louis Cardinals in the sixth inning Thursday, Mike Leake served up a mistake to the slugger.

Harper sat on a hanging breaking ball, and obliterated it into the third deck at Nationals Park to tie the game 1-1.

The blast was Harper's 12th home run of the season, and his first since May 13.

(Video courtesy: MLB.com)