PORT ST. LUCIE — By Noah Syndergaard’s standards, perhaps, Saturday was a good day.

“I always think it’s great to struggle,’’ Syndergaard said following his second outing of the spring. “It separates the men from boys in how you react and how you make adjustments during a game. You recognize you don’t have your best stuff and you have to really pitch.’’

If that’s the case, Syndergaard figures to have gotten quite a bit out of his outing, during which he walked five in 2²/₃ innings.

“I was pretty out of sync [and] really out of whack,’’ Syndergaard said. “My lower half and upper half weren’t syncing up. I was trying to guide the ball as opposed to driving it through the mitt.”

That resulted in a four-pitch walk to George Springer to open the game, and he never found his groove despite consistently throwing in the high-90s.

He also managed to strike out four.

“It’s probably not his best outing ever, but when it’s something that’s so not typical of a player like that — where he’s kind of scattering the ball around — you don’t really worry about it,’’ manager Mickey Callaway said after the Mets lost to the Astros, 8-7, at First Data Field.

“It’s kind of an anomaly, in my mind. He always throws strikes, and that’s not gonna be an issue moving forward. Other than that, I thought the stuff was good.’’

Perhaps a more pressing concern for Syndergaard was the three stolen bases he allowed in the third inning — when Springer stole second, which helped set up a double steal with Springer and Jose Altuve later in the inning.

New catcher Wilson Ramos had little chance to get either runner.

“I was really more focused on trying to find the strike zone as opposed to what the runners were doing,’’ Syndergaard said.

Before the game, Ramos acknowledged that was part of Syndergaard’s game the two were going to focus on this spring.

“We’re working on tempo and holding runners,’’ said Ramos, who signed with the Mets as a free agent in the offseason, and spent plenty of time in the NL East from his six-plus years with the Nationals (2010-16).

“He’s throwing well and he’s always had really good stuff,’’ Ramos said. “Last year, the scouting reports just said ‘run, run, run against him.’ We want to change that.’’

A year ago, potential base-stealers were caught just three out of 35 times (9 percent) against Syndergaard as opposed to 28 percent throughout the league.

If he throws like he did in his first outing, when he looked solid versus the same Astros team, the difficulties with holding runners on won’t be as pressing of an issue.

“My last start at their park, I felt really great and really explosive,’’ Syndergaard said. “I was getting down the slope well and today was just completely different. I was able to make an adjustment in the second and third inning to speed up my tempo little bit and cleaned everything up.”

More important, Syndergaard pointed to the fact he’s got about four weeks before his starts count for anything.

“There’s a lot of time to work,’’ Syndergaard said.

“We know the velocity was there and he was feeling good,’’ Callaway said. “He just didn’t have command of the ball like he usually does.’’