College football’s offseason is only a week old but staff shakeups among SEC football programs have been well underway for months.

This has manifested itself in obvious ways, such as five conference teams hiring new head coaches. That itself continues a trend for the nation’s toughest conference. But plenty of coordinators and assistants either moved over or moved up in the past several weeks. And whether out on the recruiting trail or on the field, those coaches often build strong bonds with players. Coordinators or unit coaches are often key to a recruit’s signing decision, and to the development of those youngsters throughout their playing careers.

This is a look at 10 coaches at new positions in the SEC who could make a big impact quickly on their programs, from obvious choices like Jimbo Fisher to some less heralded assistants. They are listed alphabetically.

John Chavis, defensive coordinator, Arkansas

Chavis has been a defensive coordinator in the SEC since 1995 and has been an assistant in the league since 1989. Chavis spent the past three seasons as the DC at Texas A&M and the previous six in the same position at LSU on the heels of a 20-year stint at Tennessee. Not every Razorbacks fan was thrilled with the hire considering Texas A&M’s struggles this season, but ESPN’s Rece Davis is among those who think it could be a good move. He has a long track record of success and working under a young, rising coach like Chad Morris could give Chavis a boost.

Ron English, safeties, Florida

Dan Mullen brought a lot of his Mississippi State staff to Gainesville and many have previous experience with the Gators. But English is one new Gator assistant working in the Sunshine State for the first time as the former Eastern Michigan head coach is on his third post in three years. English had been a defensive coordinator at Michigan, Louisville and San Jose State before coaching safeties on Mullen’s staff in Starkville last season. English’s experience on several levels and in just about every part of the country should come in handy as part of a new staff settling in at Florida.

Steve Ensminger, offensive coordinator, LSU

The veteran assistant and former Tigers player was the interim OC under Ed Orgeron in 2016 after Orgeron replaced Les Miles. Ensminger stayed on staff as tight ends coach when LSU hired Matt Canada last summer but now is getting his full-time chance. The offense didn’t progress much under Canada after averaging 32 points a game in the eight games under Ensminger’s leadership in 2016. The team figures to shake up its schemes some going into 2018 and Ensminger is key to getting the passing game going in the right direction to complement the Tigers’ normally strong ground game.

Jimbo Fisher, head coach, Texas A&M

Quite simply, this move made the most noise in the SEC, and perhaps in the country, this offseason. The Aggies lured Fisher out of Florida State, where he had won a national championship, with a contract reportedly worth $75 million over 10 years. The school seems to have no qualms over handing out such a huge deal. Fisher, 52, returns to the SEC, where he was the offensive coordinator at LSU from 2000-06 and also spent six years as Auburn’s quarterbacks coach. Hiring that big of a name is bound to impact recruiting and Fisher has made up ground quickly in his first weeks on the job.

Luke Getsy, offensive coordinator, Mississippi State

Getsy joins the Bulldogs staff after a stint in the NFL in Green Bay. He coached wide receivers for the Packers the past two years, making the leap after coaching the same position with Western Michigan in 2013. One of the players under his tutelage at WMU was Corey Davis, the No. 5 overall pick in this year’s NFL Draft who set the Football Bowl Subdivision record for career receiving yards. This is Getsy’s first year as a coordinator but his NFL experience, though brief, could entice some recruits to consider MSU.

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Joe Moorhead, head coach, Mississippi State

The former Penn State offensive coordinator has brought that school’s recruiting coordinator to Starkville as well as a few other staff members who were part of some fruitful seasons in Happy Valley. Moorhead and his assistants have some big shoes to fill after Dan Mullen’s successful stint at MSU, but there has already been some good news for Bulldogs fans as defensive lineman Montez Sweat, the SEC co-leader in sacks in 2017, announced he will return for his senior season.

Chad Morris, head coach, Arkansas

The Razorbacks plucked Morris from SMU, where he turned around the Mustangs and helped guide them to impressive offensive numbers even by the standards of the offense-happy American Athletic Conference. Now Morris takes over a program that has fallen off since 2011, when Arkansas finished 11-2 and won the Cotton Bowl. USA Today’s Danny Sheridan thinks highly enough of Morris that he recently said Arkansas could challenge Alabama and Georgia for SEC supremacy in a few years.

Dan Mullen, head coach, Florida

Mullen’s choice to leave one “Ville” for another (Starkville to Gainesville) could be a key step in Florida’s attempt to return to SEC and national relevance. Mullen, of course, was a UF assistant under Urban Meyer the last time the Gators won the national championship, in 2008. Former Gators quarterback Tim Tebow was Mullen’s star pupil at that time and Mullen recently told Tebow of his move back to Florida: “This is it. I’m home.” If Mullen’s record at MSU — 69-46 in nine seasons with eight consecutive bowl appearances — is anything to go by, a lot of recruits might say the same thing.

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Jeremy Pruitt, head coach, Tennessee

The former Alabama defensive coordinator has hit the ground running in recruiting in the days after his stint with the Crimson Tide’s national championship team ended. Pruitt has finished building his staff and he is expected to do big things in Knoxville — which makes one wonder what took UT so long to settle on him. Anyway, the Vols are coming off the first eight-loss season in school history and their first winless SEC campaign since becoming a founding member in 1933. So Pruitt, as the old saying goes, has no place to go but up.

Kevin Sherrer, defensive coordinator, Tennessee

Before joining Pruitt’s new UT staff, Sherrer faced off with Pruitt’s Crimson Tide in the College Football Playoff National Championship game as Georgia’s outside linebackers coach. Now Sherrer, who had been the last holdover on the Bulldogs’ staff from the Mark Richt era, steps into the DC role with the Vols. Sherrer also has experience with Alabama’s operation so he has seen SEC football from a variety of angles. He returns to the role he held at South Alabama in the 2013 season, when the 6-6 Jaguars ended the season on a three-game winning streak in which they allowed an average of just 13 points.