Noah Syndergaard pitching a rehab start against the Staten Island...

Noah Syndergaard pitching a rehab start against the Staten Island Yankees at MCU Park, Brooklyn,NY on Thursday, Sept. 7, 2017. Credit: Errol Anderson

Without a minor-league game in which to pitch because most of the affiliates’ seasons are over, Noah Syndergaard will throw a simulated game at Citi Field Sunday. He is expected to go for 50 pitches as part of his effort to return before the Mets’ season ends.

“We’ve certainly got to build up his stamina a little bit,” manager Terry Collins said, mindful of Syndergaard’s 36-pitch effort for Brooklyn Thursday. “We talked about it, that he was surprised how hard it was to go out there and warmup after not pitching for so long. So, he is obviously at the beginning of spring training.”

His next step will be determined after the club sees how he reacts to Sunday’s outing.

Rosario close to return

Amed Rosario, who has been out with a bruised finger, returned as a pinch runner in the seventh. He ran for Jacob deGrom, Sunday’s starting pitcher, who drew a walk as a pinch hitter. Rosario advanced on a sacrifice and scored from second on Nori Aoki’s single.

The shortstop showed no problems taking ground balls during infield practice, once going into the hole and making a leaping throw to first. He was scheduled to hit Saturday, possibly in the cage (he didn’t bat on the field). Collins said Rosario will be back in the lineup Sunday.

Cabrera returns

Asdrubal Cabrera (2-for-4, RBI double) returned after an MRI showed no damage in his lower back or glute . . . The Mets wore first responders caps in memory of 9/11 and will do so again Sunday, their last home game before the anniversary of the attacks . . . There was a postseason-type chill in the air. Erin Heatherton, a Sports Illustrated swimsuit model, wrapped herself in a promotional giveaway fleece blanket on the way to the mound for the ceremonial first pitch (she also represents the company that makes the blankets).