So that’s what a big home run looks like.

Curtis Granderson delivered a timely two-run homer in the seventh inning Saturday night snapping a scoreless tie and lifting Ivan Nova and the Yankees to a 3-0 victory over the Padres at Petco Park.

Granderson’s home run was only the fourth for the Yankees in 13 games since the All-Star break with all four coming from players who didn’t join the lineup until last week.

“I’ve talked about how Curtis can change the complexion of a game really quickly” Joe Girardi said of the outfielder who came off the disabled list Friday. “That’s what he did tonight.”

Meanwhile Nova (5-4) was brilliant again though it appeared for a while that the Yankees were going to reward his effort with another anemic offensive performance.

The righthander held the Padres to four hits and one walk over seven shutout innings striking out eight. Nova is now 3-2 with a 1.66 ERA over his past five starts averaging more than seven innings per outing.

“I don’t remember the last time I felt the way I feel now” Nova said. “I’m working hard to try to repeat it every time. I’m trying to go out there and do my job try to help the team to win games.”

Tyson Ross (2-5) held the Yankees to one hit through the first six innings retiring 18 of 20 batters before the Bombers finally got to him in the seventh.

Granderson’s two-run blast in that inning proved to be the difference-maker allowing Nova and the bullpen to slam the door as Dave Robertson and Mariano Rivera (35th save) closed the game.