Noah Syndergaard wanted the shirts as a tribute to teammate Yoenis Cespedes. So the fireballing Mets righthander phoned a friend at the website Barstool Sports.

Soon, the Mets were sharing in the bounty of black tops that read "Yo Knows Beisbol."

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"They sent us a bunch," said Syndergaard, who wore the shirts before Friday's Subway Series opener, along with a handful of other Mets and Cespedes himself.

The shirts added to a sense of ease in the Mets clubhouse, even with a looming slate of Subway Series games, each of them packed with pennant-race implications.

"I do my best to try to tune it out," said Syndergaard, who will make his debut in the crosstown rivalry Saturday. "Sometimes, it's a little difficult. I just try to use it to my advantage. Once I step on the mound, it's just me out there with Travis out there playing catch. That's what I'm focused on."

Syndergaard, 23, is coming off a strong outing following a brief shutdown to conserve his innings. Against the Braves on Sept. 12, Syndergaard allowed just one run in seven innings. He struck out eight and walked just one.

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"I'm really excited about tomorrow, first Subway Series, I'm really excited to be a part of that," Syndergaard said. "Just being outside for BP right now, there's a lot of fans already waiting for some baseball. It's really cool, just two teams competing for a playoff spot, so it's going to be a lot of fun."