ANN ARBOR, Mich. — Defensive line coach Shaun Nua is the lone holdover on Michigan football's defensive coaching staff. He, like the players, saw the unit transition from a 4-3 system to a 3-4 scheme (though it will present multiple looks).

The principles Nua is drilling into his players' heads, however, haven't changed.

"We’re trying to be physical up front, we’re trying to execute at the highest level possible, as consistent as possible," Nua said. "It’s defense. You’ve still got to do the same thing — be physical up front. That’s where everything starts. 4-3, 3-4 — still adds up to seven. Same thing; same concepts."

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Nua trusted new coordinator Mike Macdonald from the first time the two met, he said. The players, too, were hooked right away.

"He first had faith in himself and his knowledge and his ability to rally the troops and put everybody in the same room and say, ‘This is our goal. This is our process,’ and try to execute it every day," Nua explained. "I think he has high, high confidence in himself and his ability to do that, and that’s how he grasped the guys’ attention."

One of Macdonald's points of emphasis during spring ball and fall camp has been forcing turnovers, after the Wolverines made just three takeaways in six games last season and finished the year ranked 96th nationally in turnover margin per game (-0.5).

"Coach Macdonald has done a great job of emphasizing that during practice — ‘we’ve got to have a tackle circuit, we’ve got to have a turnover circuit,’ emphasizing guys running to the ball," Nua revealed. "We’ve got to be aggressive at the point of attack, and then turn around and run to the ball — that’s where you cause turnovers, so it still comes down to effort and proper execution. Turnovers should be a byproduct of that."

Nua's group is headlined by junior defensive end Aidan Hutchinson, a preseason All-American and projected 2022 first-round NFL Draft pick. After the graduation and departures of 2020 first-round end Kwity Paye and tackle Carlo Kemp, the line will have a different look this fall.

The amount of players who will find themselves in the rotation depends on them living up to the group's standard.

"We hope we can play all of them," Nua said. "But whatever the standard is that is necessary for us to win the game, that’s what the rotation will be based off of.

"If the ones are the only group out there living up to the necessary standard, then that’s who’s going to be playing. If the twos go out there and stink it up then the ones are going to be in the whole time. But the goal is to always have a good rotation and, at the same time, keeping the standard that is necessary for us to win."

One who could surprise and find himself in the thick of things is second-year freshman defensive tackle Kris Jenkins, who is the projected backup to sophomore Christopher Hinton on the depth chart.

"Look out for Kris Jenkins," Nua said, enthusiastically. "I think Kris Jenkins has a great opportunity to reveal his talent. We’re all excited to see how that goes, but Kris Jenkins is one of the young guys, young players that is doing a great job of coming along."

Because of Macdoanld's new scheme, Michigan's nose tackles have added responsibility. They'll be asked to take up multiple gaps on a frequent basis. If they don't clog the middle and garner attention, things won't flow as smoothly for their teammates playing outside them.

"It’s the tip of our spear right there — if he’s weak, everybody’s weak," Nua said.

The Wolverines haven't been as strong as they've needed to be on the interior of the defensive line last season, but multiple names have emerged this offseason. Wolverine players say redshirt freshman Mazi Smith, who's now weighing 318 pounds and in the best shape of his life, has taken a big leap forward.

Smith's development has been a long process, Nua noted, but it's finally coming together.

"The first time I met Mazi, that light was on. The only difference was, he had a lot of work to do, Nua said. "Obviously, everybody still has a lot of work to do. But he’s done a great job with his mindset, first and foremost, trying to change his body. Everything starts with mindset first, and he’s done a great job.

"Now, he’s in a position where he can go out and execute more consistently and much more frequently and at a high level. He’s done a great job."

Redshirt junior Donovan Jeter is one who can play multiple of the defensive tackle spots. He's received some preseason hype in the past, but he said he's tired of hearing it and just wants to produce on game days. Those comments were music to Nua's ears.

"Same as what we tell every other player that we have — the focus, the attention to detail, constant discipline and a mindset to be attacking and look to destroy somebody," Nua said of what he's seen out of Jeter. "I loved when he said that, because I love that mindset of: Enough of the talk; let’s go out and execute."

Redshirt junior Jess Speight, a former walk-on, is another option at nose guard, as is seventh-year senior and Oregon State transfer Jordan Whittley.

"He’s done a great job changing his body," Nua said of Whittley. "You’ll see Saturday or the next Saturday … or whenever you see Whitt."

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