Down two runs to the Chicago Cubs in the ninth inning, the superstar launched a walk-off grand slam that still might not have landed:
He showed his excitement after the game:
Philadelphia trailed by five runs going into the eighth and was down 5-1 in the ninth, but the squad came through with a six-run inning off Rowan Wick, Pedro Strop and Derek Holland to seal the 7-5 victory and a three-game sweep of the Cubs.
In the midst of a tight wild-card race, this game could end up being huge by the end of September.
Harper has had an up-and-down year with the Phillies since signing a 13-year, $330 million deal in the offseason, but there will be no complaints about him Thursday night.