Very little went right when Sam Darnold dropped back to pass. If he wasn’t sacked or under heavy duress, his passes were getting deflected. But there was one big positive.

Jamison Crowder is every bit the third-down weapon the Jets envisioned.

The team’s new slot receiver hauled in 14 passes for 99 yards and had four third-down conversions in the Jets’ ugly 17-16 season-opening loss to the Bills at MetLife Stadium on Sunday afternoon.

“My mentality, just individually, is when it’s third down, I try to be as much of a valued option and be available as [much] as I possibly can,” he said. “Today, [Darnold] was able to find me a few times. I just want to be one of those guys that can move the sticks, so that’s just my mentality.”

When the Jets signed Crowder to a three-year, $28.5 million contract in the offseason, the hope was the former Redskin would upgrade the wide receiver position. He seemed capable of that against the Bills, frequently finding openings and using his speed to turn short completions into longer gains.

“He did a great job, especially on some of those [plays] where they created some hot [routes] for us,” coach Adam Gase said. “He got vertical and got first downs. With him, you’re able to call shorter throws on third-and-long and he can get you the first down. It really helps you offensively to where the quarterback is not holding onto the ball forever on third-and-long.”

Still, Crowder wouldn’t say his first game as a Jet was a success. They felt short and he felt there were plays he left out on the field. There was a miscommunication with Darnold in the fourth quarter that could’ve led to a big gain if they were both on the same page.

“I know I had some mental errors,” Crowder said. “There’s some things that I felt like I didn’t do as well as I couldn’t taken advantage of or done better. I’m sure everybody on offense feels the same way.”