Lincoln Riley at his introductory Coliseum news conference on Nov. 29. (Brian van der Brug / LAT)

Lincoln Riley, USC: At the start of the weekend after Thanksgiving, the USC fan base was clinging to the hope that USC athletic director Mike Bohn could complete a deal for Iowa State coach Matt Campbell. Cincinnati’s Luke Fickell appeared to be staying put, rumors were circulating Baylor and Dave Aranda were working on an extension and, as the days went on without USC announcing Campbell, true trepidation was setting in among the faithful. Then came Sunday afternoon.

The Trojans shook the college football universe by announcing they had hired Lincoln Riley from Oklahoma, where he had led the Sooners to three College Football Playoff semifinal appearances and tutored two Heisman Trophy-winning quarterbacks. Given the misery of USC fans the past three years of the Helton era, Bohn could not have made a more thrilling statement that things were about to change for the better — and quickly.

Riley is a dogged recruiter known for closing commitments on both sides of the ball, and he is right to believe he can build the country’s most talented roster from right here in Southern California. Now the hard work begins, but there’s a strong sense Riley could make it look easy.

The only reason this grade isn’t an A+ is that L.A. is a town that pays attention only to championships, and Riley has yet to climb that mountain. The great news? He gets to keep trying to do it right here.

Miami’s Mario Cristobal speaks at his introductory news conference Tuesday. (Lynne Sladky / AP)

Mario Cristobal, Miami: Welp, this is what Oregon gets for hiring a coach whose love for his mother, his hometown and his alma mater knows no bounds. That said, the Ducks were put in a tough situation after Willie Taggart left for Florida State after one season, and Cristobal put in legitimate work building the program’s foundation back, brick by brick, while winning 35 games and one legitimate Pac-12 championship in four seasons.

But Eugene never seemed like the long-term play for Cristobal. The pull of Miami was always going to be there for him, and the timing was finally right for both sides with the Hurricanes floundering under Manny Diaz and Utah reminding Cristobal twice in three weeks just how far the Ducks still have to go before they can truly compete for a national championship.

This grade could be an A because of the perfect cultural fit and Cristobal’s proven ability to develop a physical backbone within a Power Five program and to recruit the best athletes in the country to play within that philosophy. While he had to raid Southern California to bring in top talent at Oregon, he won’t have to leave a 60-mile radius to do so in South Florida.

Cristobal registers as an A-minus because he has routinely struggled with game management to the Ducks’ detriment, something he will have to improve to get Miami back to where it feels it belongs.

New Florida HFC Billy Napier speaks during his introductory news conference Sunday.

(James Gilbert / Getty Images)

Billy Napier, Florida: A year after competing for a spot in the playoff, Florida’s erosion under Dan Mullen became so glaring that athletic director Scott Stricklin had to make a move on Mullen, whom he also worked with at Mississippi State. The main issue seemed to be his recruiting; while the Gators had classes in the top 10 nationally, they did not have one class under Mullen that finished in the top three in the SEC. If you don’t recruit successfully in that conference, you eventually fall behind.

Stricklin immediately focused on Louisiana’s Billy Napier, who led the Cajuns to back-to-back Sun Belt championships and was a hot name the last few coaching carousels who elected to stay put and wait for the right job. Napier’s patience paid off with the keys to a program that can win national championships when it has the right coach in place but shockingly struggles when it doesn’t.

While LSU was reportedly swinging for the fences for a big name, Florida dropped its pin on Napier, who has been right under the Tigers’ nose for four seasons, and got its guy. This grade honors the efficiency and clean execution in securing an enticing coach who appears ready for the big time.

Marcus Freeman, Notre Dame: When Brian Kelly bolted for LSU, Notre Dame athletic director Jack Swarbrick did not need to hit the panic button. Sure, Kelly had just passed Knute Rockne on the school’s all-time wins list and had brought the program stability it hadn’t seen since Lou Holtz paced the sidelines. And his exit came as a major shock, particularly as the Irish needed only a few upsets on championship Saturday to make their third CFP semifinal appearance in four seasons.

But Kelly’s sudden exit could have been catastrophic if Swarbrick had conducted a national search, dragging out toward early signing day, and ended up with the wrong guy (and, let’s be honest, so many have been wrong in South Bend until Kelly). Kelly figured something out about navigating this incomparable challenge, and the hope is that much of that knowledge was passed to Freeman, Notre Dame’s defensive coordinator, in the last year.

The 35-year-old Freeman has been a big part of Notre Dame’s recruiting renaissance, and naming him as Kelly’s successor should keep the Irish’s 2022 class, ranked No. 6 in the 247Sports.com composite rankings, largely intact. If Notre Dame is going to take the next step and win a playoff game, it can’t afford to start over in recruiting.

Of course, Freeman is a risk because he has never been a head coach. But if it becomes clear early he is in over his head, Swarbrick could then conduct that national search with proper preparation to get it right. Notre Dame does not have to make the same mistake that USC did with Helton, handcuffing itself to an overmatched interim-turned-permanent head coach for a damaging length of time.

And maybe Freeman will be an instant star. He does not have to rebuild, and, did you happen to see the reaction of Notre Dame players when they heard he was taking over? The excitement for the future in South Bend was palpable.

Brian Kelly is introduced as LSU’s head coach by university president William F. Tate IV, left, and athletic director Scott Woodward on Dec. 1. (Jonathan Bachman / Getty Images)

Brian Kelly, LSU: I know, giving Notre Dame’s hiring of Freeman a better grade than LSU’s hiring of Kelly might seem absurd. I’m not saying that Freeman is a better coach than Kelly. I’m saying that, when taking into account the fit between coach and program and the coach’s chances to meet said program’s expectations, Freeman was a slightly better hire for the Fighting Irish at this moment in time than Kelly was for the Tigers.

From the second LSU let Ed Orgeron go, the buzz was that athletic director Scott Woodward, a Baton Rouge native, was going to reel in a big fish. Woodward brought Jimbo Fisher to Texas A&M by offering him financial stability beyond his wildest dreams, and, originally, the thinking was that he would just re-up with Fisher to bring him to LSU. That didn’t happen, and so then the buzz switched to Riley. When Riley chose to join USC, Woodward moved fast to convince Kelly that he had reached his ceiling at Notre Dame, that he owed himself one final shot in his 60s to reign over the sport.

Kelly, born and raised in the Boston area, is the opposite of a cultural fit for Louisiana’s state capital. The uneasiness of the pairing was bare for the world to see last week when Kelly debuted his attempt at a Southern accent while giving a speech at an LSU men’s basketball game. Very quickly, the marriage between Kelly and LSU had become a joke, but, given Kelly’s coaching acumen, it is likely the Tigers will be taken seriously on the field soon enough under his leadership.

DeBoer was attractive to Washington because he should be able to fix the Huskies’ offense — especially if he has the same kind of effect on highly-touted freshman quarterback Sam Huard as he did on former Washington transfer Jake Haener at Fresno State. It was baffling this season watching Lake stick with Dylan Morris for so long while Huard kept waiting for his chance to show what he can do.

DeBoer went 67-3 as the head coach of his alma mater, Sioux Falls (S.D.) of the NAIA, from 2005 to 2009. He led the program to three NAIA championships and has steadily risen up the profession since then. The Huskies are the most recent Pac-12 program to make the playoff, but in their current shape, any big swings were likely to be misses. There’s good reason to believe DeBoer has the chops, and he gets to enjoy the added jolt of Cristobal leaving Oregon.

B- Grade hire

Brent Venables is introduced as Oklahoma’s new head coach in Norman, Okla., on Monday.

(Sue Ogrocki / AP)

Brent Venables, Oklahoma: After processing the shock of losing Riley to USC, Oklahoma athletic director Joe Castiglione and Bob Stoops, while serving as the interim head coach, decided to keep it in the Sooners family with a nod to Stoops’ early glory days in Norman when Venables was his defensive coordinator. The decision was well-received at OU, particularly among former players who saw the program going soft under Riley’s leadership and desired a return to tough-minded defense as the team’s hallmark as it prepares for the upcoming move to the SEC.

There is no debating Venables’ ability to coach defense after his decade at Clemson, helping Dabo Swinney and the Tigers to two national championships. Even this season as the Tigers went 9-3, Venables’ unit was as menacing as ever. Venables has spent his career watching legendary head coaches do their thing — Bill Snyder at Kansas State (as a player and assistant), Stoops and Swinney. Now it’s his turn to implement what he has learned, and it’s a logical assumption to make that he’s ready.

But something about this hire isn’t moving the needle. Maybe it’s the question of why it has taken this long for Venables to become a head coach after being a known commodity as a coordinator. Was he uninterested in running his own program until an amazing opportunity like this one came available, or were other schools put off by something and unable to take the plunge?