NASHVILLE, Tenn — Geno Smith has authored a number of chapters in his NFL career, which began with the Jets in 2013 when they drafted him in the second round with hopes he’d become their franchise quarterback for years to come.

Act I Geno didn’t end well.

The Jets and their expectant fan base hope Act II, which begins Sunday against the Titans in the 2026 season opener, has a much better ending than the first one Smith lived with the organization.

As for Smith, he hopes this chapter turns out to be much less volatile than some of the ones he’s authored in his star-crossed, 12-season career.

If he has had one superpower in his career it has been his remarkable resiliency. Players less resilient would be long out of the league by now. Smith, however, carries on. Sunday marks his beginning as a starter for a fourth team, second time with the Jets.

Many quarterbacks don’t get a second chance after it fails to work out. Few get a third chance.

Smith is on his fourth stint as a starter. He was the starter his first two seasons with the Jets, but after Year 4 he was let go. He bounced around as a backup for several years — with the Giants, Chargers and Seahawks. Finally, in 2022, he earned a starting gig again in his third season in Seattle. That role last three seasons before he was traded to the Raiders in 2025, which turned into a 2-13 nightmare season for him.

Now he is back with the Jets, and fourth turn as a starter. What lies ahead for Smith in this latest chapter of his career?

Sunday he will be facing an aggressive Titans defense under head coach Robert Saleh, who preceded current Jets head coach Aaron Glenn.

Frank Reich, the Jets offensive coordinator and a former long-time NFL quarterback, has big plans for Smith. Reich said “resilient” is the “right word” to describe Smith.

“Mentally resilient,” Reich said this week. “He never lets his guard down, at least not that I ever see. He comes to work to get better. He’s all ball, all the time. I love that resilience and mentality in him.”

When it was mentioned to Reich that Smith never seems to lose the chip on his shoulder, he said, “I feel that chip on his shoulder every day, and I hope he never loses it.

“He also has a streak of aggressiveness that I hope he never loses, because that’s what it takes to be great at the quarterback position. You have to have the confidence to believe in yourself, make plays, believe in your teammates, and give them a chance to make plays too.

“Geno has that, and he’s demonstrated it every day, every week.”

On Sunday, it’ll be time for him to demonstrate it in a game that counts.

Smith went 8-8 in his rookie year as the Jets starter, then 3-10 in his second year, throwing 34 interceptions across those two years.

Then, in August of the 2015 season, poised to start a third year with the Jets, Smith was famously punched out by teammate, linebacker IK Enemkpali, in a locker room dispute over Smith not paying Enemkpali money he owed him and that effectively ended Smith’s Jets career.

Smith this week called it “an honor to be back” with the team a second time “to have the opportunity to be a part of this organization again, to lead this team, this young talented group of guys who work extremely hard.”

He was recently named one of the offensive captains, voted by the players, and said he relishes the title.

“I told those guys I’m going to wear that captain’s patch with pride because there are so many guys on this team who could’ve been easily voted captain … [and] I’m representing all the guys,” he said.

“You don’t make it this long in the league without that sense of professionalism, that sense of accountability in everything you do,” tight end Jeremy Ruckert told The Post. “You see how he comes to work every day, how early he’s in meetings, how he carries himself, and it permeates throughout the locker room. He does a really good job leading by example. You can tell how resilient he is based on his career path, but also in how committed he is to being in this locker room and making a difference here again.”

Receiver Adonai Mitchell also professed his “ton of respect” for Smith.

“When you’re down, you have to pull yourself up,” Mitchell told The Post. “Nobody’s going to do it for you, and he’s done a great job of that. You can tell just by how he carries himself, the things he’s been through. He just wants to win, and that attitude echoes throughout the offense, because we all put our eyes on the quarterback. He’s our leader.”

Smith has come a long way since his first stint with the Jets.

“With experience comes a lot of maturity,” he said. “I’ve gained a ton of experience, I’ve been in multiple markets, I’ve played a lot of football in my time. So, I just understand that all you can look forward to is each and every opportunity. I embrace the challenges.

“I know that there’s a great opportunity in front of this team.”

It’s an opportunity that can be seized only if the quarterback performs at a high level.