Bills coach Rex Ryan looked dazed after Thursday night’s 37-31 defeat to the Jets.

Ryan was answering a question about how his defense got carved up for 493 yards and started listing the ways the Jets did it.

“I thought No. 81 played his butt off us against us,” Ryan said.

It might be time to learn his name, Rex.

Number 81 would be Quincy Enunwa (ee-NOON-wah), who has emerged as a key cog for the Jets in their first two games. If you had asked anyone before the season who would be the Jets’ leading receiver after two games, you surely would have gotten a lot of Brandon Marshall and Eric Decker answers. Maybe the adventurous types would have guessed Matt Forte.

Enunwa? No one saw this coming. But he leads the team with 13 catches. He has gained 146 receiving yards and scored his first career touchdown against the Bengals.

It is not like Enunwa has come out of nowhere, but his emergence has been surprising. The 2014 sixth-round pick (maybe Ryan forgets he picked him) barely played as a rookie, but was given a role on last year’s offense that increased as the season went on.

Now, he could be the complementary piece in the Jets’ passing game to Marshall and Decker they have been looking for.

“That’s what we didn’t have last year. We didn’t have a No. 3 guy. We didn’t have a No. 4 guy,” Marshall said. “Quincy is our unsung hero. He was our unsung hero last year, but it was just in the running game. Now we’re getting him involved in the passing game.

You would think that it would be myself or Matt Forte or Decker that opens up the offense. But it’s really 81. If he can continue to make those plays and take advantage of 1-on-1 coverage — because he’s going to get it — it’s going to make all of our jobs easier.”

The 24-year-old Enunwa is something rarely seen on the Jets — a John Idzik draft pick that panned out. He was the third wide receiver taken in the 2014 draft by the former Jets general manager. The other two are long gone. But Enunwa stuck. He was active for just one game as a rookie, the final one as a reward for his hard work.

In 2015, the new coaching staff took a liking to Enunwa. They saw a versatile player because of his size (6-foot-2, 225 pounds), his blocking ability and his skills as a receiver. He became an H-back for them in 2015, but his blocking was valued more than his receiving.

After a four-game suspension in the middle of the year stemming from a domestic violence incident in 2014, Enunwa returned a more focused player. Fourteen of his 22 catches last year came after the suspension. He had a four-game catch against Dallas and made some huge catches down the stretch for the Jets.

This season, he has taken a bigger jump. He had seven catches against the Bengals and six against the Bills on Thursday, including two big third-down catches on the team’s first drive.

“I think he’s worked on his craft,” Jets coach Todd Bowles said. “He’s worked on his hands every day in the offseason. He’s worked on his feet. He’s worked on his route running. Quincy is a tireless worker, and a lot of the things you see that he’s doing now is paying off from the offseason. And I think Justus [Galac], our strength coach, has done a great job with him as far as getting his footwork together and him playing with more balance.”

Quarterback Ryan Fitzpatrick has spoken highly of Enunwa throughout the preseason. On Thursday, he marveled at his hand strength.

“He made some big plays,” Fitzpatrick said. “He’s just got such strong hands — it looks like he’s trying to pop the football every time he catches it.”

The way he is playing, everyone will know Enunwa’s name soon.