D’Arnaud takes simple approach

Travis d’Arnaud used the KISS method — Keep It Simple, Stupid — Saturday.

And the result was he picked up where he left off last September — and in spring training.

“Just keep things simple. I get in trouble when I overthink, so [the hitting coaches] told me that today just to keep things simple and I had some good results,” said d’Arnaud, who hit six of his 16 homers in September last season.

His best result Saturday was his first homer of the season, a drive on a 3-2 pitch leading off the fourth.

“Just got a good pitch to hit, 3-2 count. Just made sure I kept my eye on it and fortunately I got a positive re- sult,” d’Arnaud said in classic understatement.

D’Arnaud and Kevin Plawecki have been in a job share behind the plate. Plawecki was terrific on opening day. D’Arnaud was similarly terrific Saturday in a 6-2 win over the Cardinals at Citi Field. Manager Mickey Callaway said he couldn’t ask for more.

“You really couldn’t. D’Arnaud swinging the bat like he did today,” Callaway said. “You can’t really can’t ask for anything better. No matter what you choose that day, it’s a good outcome. That makes it easy on the whole team.”

All three Mets relievers who pitched Saturday — Robert Gsellman, Anthony Swarzak and Jeurys Familia — entered the game in the middle of an inning, finished it off, then started another inning. Callaway said he wants to find out which of his pitchers can be that kind of weapon.

“It just called for it today,” Callaway said. “They probably need to be ready to do that. I think it can be an effective weapon for guys to finish an inning, put out a fire and then come out and pitch.”

On Saturday, the Mets began wearing a commemorative patch on their right sleeves in honor of Rusty Staub, who died Thursday. The Mets will wear the patch, which features Staub’s autograph in orange, throughout the season. Staub played for the Mets from 1972-75 and from 1981-85. Plus, they had Staub’s No. 10 uniform hanging in the dugout.