FLORHAM PARK, NJ — A look at what’s happening around the New York Jets:

1. Guys from Ames: Running back Breece Hall faces off against his old college roommate on “Monday Night Football” at Levi’s Stadium. He and San Francisco 49ers quarterback Brock Purdy hit it off so well at Iowa State that they lived together for two years in school, playing video games, enjoying music (Purdy had an electric piano in his room) and berating third roommate Mike Rose for his sloppy habits.

Their best day came Sunday, when the trio gathered in their living room to watch NFL games. Looking back, Rose said they always knew Hall had the talent to play in the league. Rose credited Purdy with pushing Hall to be a better player.

“It definitely got competitive,” Rose, a former Cyclones linebacker, told ESPN. “Breece and Brock would definitely go at it. They were always trying to outdo each other, whether it was Madden or something else.

“Brock was always harder on Breece to get him on board a little bit, like with football and stuff. Brock was the perfect example of how to do it. Brock was kind of a good mentor to Breece. I think Brock always made fun of him.”

Purdy was hyper-focused, a movie addict who embraced preparation. He “always pushed Breece in that way to be more of a professional and stuff like that,” Rose said. Hall did the same, calling Purdy “the ultimate leader. Just being with him for 2½ years made me a better person. He rubs off on you.”

Rose and Purdy lived together for a semester, then invited Hall, who had a second-floor bedroom off the kitchen, to move in. They didn’t have any parties (“We were kind of lame,” Rose said), but they did have a lot of laughs.

Rose, recently cut by the New Orleans Saints, will keep an eye on his old roommates as they enter their third NFL seasons. Both were drafted in 2022, Hall in the second round, Purdy in the bottom of the seventh, Mr. Irrelevant.

“I’ve been in and out of the competition, so it’s nice to have people that you can always watch,” Rose said. “Brock’s success is so cool, how he’s carried himself and how he’s still the same person. It’s refreshing to see, honestly, in this world.

“Breece, it’s not a surprise. Breece is still going to have a coming out party. I don’t think people know what he’s capable of. It’s just amazing to see those two guys, because you’ve seen the work and the time they put into it.”

2. No grudge: The football universe works in mysterious ways. The player who sacked Aaron Rodgers on the play that resulted in a torn Achilles tendon was Leonard Floyd of the Buffalo Bills — the same Leonard Floyd who signed with the 49ers in the offseason.

They will meet again on Monday.

It’s clear that Floyd wasn’t trying to hurt Rodgers with the play. Rodgers acknowledges that, saying, “I hope he doesn’t feel responsible for this in any way.”

He’s enjoyed his interactions with Floyd on the field over the years, noting that he once gave Floyd a pump-fake during a touchdown run, teased him about it, and then got a punch in the chest when he tried it again. “Obviously, he’s played at a high level for a long time,” Rodgers said, “and I like to get him pumped up before the game.”

3. The Incredibly Shrinking Mechanic: Without edge rusher Haason Reddick (holdout), the Jets will likely turn to Michael Clemons (one career start) to play defensive end in the base defense. He’s not a natural pass rusher (just three sacks in 32 games), but he’s a lot more streamlined than he used to be.

A year ago, Clemons was asked to gain 30 pounds so he could slide inside to play defensive tackle — an unfortunate move. “In retrospect, it wasn’t a good idea,” coach Robert Saleh admitted. Clemons wasn’t productive, so they basically told him, “Never mind.” He lost the weight and is now 263 pounds.

The hope is that a thinner, quicker Clemons can improve his pass-rush game. In reality, the Reddick void — at least in the pass rush department — will come largely from 2023 first-round pick Will McDonald IV.

4. Concept family tree: The Jets open the season with six former first-round picks on the defensive line and eight total on defense, not including Reddick, who remains on the reserve/did not report list. The newcomers are tackle Javon Kinlaw and end Takkarist McKinley, drafted by the 49ers and Atlanta Falcons, respectively.

If Reddick does sign, the Jets will be in rare company. In the regular draft era (since 1966), only 14 teams have had at least nine former first-rounders on defense, according to Elias Sports.

5. Reddick’s absence: Some may wonder if Reddick will pull a Le’Veon Bell and sit out the entire season due to a contract dispute. Bell did so in 2018 with the Pittsburgh Steelers, then signed with the Jets as a free agent in 2019.

But the Reddick and Bell situations are apples and oranges.

Bell was not under contract with the Steelers; he had the franchise tag and refused to sign the tender. Reddick has one year left on his contract; if he sits out, he will not get credit for the season and his contract will expire. Instead of becoming a free agent in 2025, his rights would still belong to the Jets and he has accomplished nothing with his holdout.

6. Expensive secondary: The Jets rewarded nickelback Michael Carter II with a top-of-the-market contract at his position (a three-year, $30.75 million extension). Cornerback Sauce Gardner, who will be eligible for an extension after the season, is moving in the same direction at his respective position. Where does that leave cornerback DJ Reed, who will be a free agent? Reed said he’s happy for Carter, but his plan is to play out his contract.

“I’m going into free agency,” he told ESPN. “I’m focused on taking care of my business, taking it one game at a time, ultimately winning, making the playoffs, trying to make the Super Bowl and just seeing what happens from there.”

7. Under the radar: The Jets have three new starters on the offensive line — Tyron Smith, Morgan Moses and … uh … who’s the third? John Simpson, left guard.

He’s often overlooked, but it’s interesting to note that Simpson has received unsolicited shoutouts from Rodgers and Saleh. Rodgers called him “one of the biggest surprises” of training camp. Simpson could be a cheap free agent if he can reduce his penalties. He led the league with 11 last season, including eight holding calls.

8. On the edge: Defensive end Jermaine Johnson, coming off a successful season, has high hopes for 2024: “I want to be the best edge rusher in the NFL.” He named three areas he can improve on: eliminating wasted motions, developing a pass-rushing plan for every play and utilizing more counter moves.

9. Be strong: One thing the Jets will look to instill on offense is an element of toughness in the scoring zone. That was lacking last season, based on this eye-opening stat — they passed the ball on 73 percent of their plays inside the opponent’s 10-yard line, the highest percentage in the league since 2017, according to ESPN Stats & Information. With an improved offensive line, and with a runner like Hall and a big back like Braelon Allen (235 pounds), there’s no reason they can’t be a physical running team.

10. The last word: “Whatever happens on Monday, if we win, the headline will be, ‘We’re going to the Super Bowl.’ If we lose, it’ll be, ‘The same old Jets song.'” — Rodgers on the media and fan reaction.