Brandon’s slump is long gone

Before Wednesday’s matchup with the Phillies, Mets outfielder Brandon Nimmo said he feels close to getting back to normal.

His 10th-inning homer that delivered the Mets a 3-0 walkoff win over the Phillies and a split of their four-game series, indicates he was right.

Pinch hitting for reliever Robert Gsellman, Nimmo smacked the first pitch he saw into the stands beyond center field. He said his swing on the ball was so true, he couldn’t even feel it off his bat.

“You’re just floating, it’s hard to describe. All the hairs on the back of your neck are standing up,” Nimmo said. “I was just extremely elated, it’s no secret I’ve been struggling the last couple of weeks. It was a really good feeling. Now I know how [Wilmer Flores] feels all the time.”

Nimmo has registered six hits through 10 games in July, and he had drawn a blank at the plate in his previous two contests. It was decided that the 25-year-old would not be in Wednesday’s starting lineup.

He was told the decision was to give him a day of rest, which he said he understood given his past few games. A mental day is what the Mets’ coaches hoped to give Nimmo, but he still had his sights set on what he could do to help out in the matchup with the Phillies.

“They told me to rest, take a mental day as well and then obviously I’ll be ready to pinch hit or whatever they need during the game,” Nimmo said beforehand. “I’m the type of personality that’s always going to go, go, go. So sometimes you need some people to maybe pull the reins back on you a little bit.”

Even though he has registered a walk-off home run with Triple-A Las Vegas, this one meant a lot more.

“A wise man, Jay Bruce, once told me that it doesn’t count unless it’s in the big leagues,” Nimmo said. “So we’ll just say that this is the first one, because it was the first one in the big leagues.” mwalker1@nypost.com