Steven Matz at Citi Field has become a deadly combination.

Given an early five-run lead, the left-hander from Long Island was yet again at his best at home.

Matz delivered six shutout innings as the Mets routed the Diamondbacks, 9-0, Wednesday night to take the first three games of the four-game series, and Matz improved to 7-1 with a 1.94 ERA in Queens this season.

“I feel comfortable here. And for me, being comfortable on the mound is a big thing,” Matz said after extending his Citi Field streak to 23 straight outings without allowing more than three earned runs.

Matz did struggle in the second, walking the first three hitters he faced. But he didn’t break, striking out Carson Kelly and getting Kevin Cron to bounce into a double play to end the threat. He cruised from there, striking out seven and allowing four hits to lower his ERA to 3.84.

“He relaxed a little bit after that,” manager Mickey Callaway said. “He had kind of done something that was going to be the hardest thing he had to do all day, and he settled in and just made pitches from there.”

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