As Sean McVay becomes the youngest head coach in NFL history, Sky Sports looks at the new recruits and their path to the top.
Five of the six positions were filled this week, as the Los Angeles Rams made history by appointing McVay. The former Washington Redskins offensive coordinator becomes the youngest full-time head coach in the NFL, at the age of 30.
So far, only Doug Marrone, who was appointed by the Jacksonville Jaguars, has previous head coaching experience.
So who are the latest additions to the coaching carousel? Sky Sports gives you the lo-down.
Sean McVay - Los Angeles Rams
There may be little to draw on, but McVay is widely tipped as one of the most exciting minds in the NFL. After playing wide receiver for the Miami Ohio Redhawks at College, he made the move into coaching as an assistant wide receivers coach with the Tampa Bay Buccaneers.
From 2010 onwards, he made his way through the ranks with the Redskins, before being appointed offensive coordinator at the start of the 2014 season.
McVay found success with quarterback Kirk Cousins, and the team posted the third best passing offence in the NFL this season.
The Rams fired former head coach Jeff Fisher after a fifth consecutive season without making the play-offs, and success in the post-season is the one requisite, particularly in a market such as L.A., with a new arrival in the Chargers arriving imminently.
McVay has already started making moves for his coordinators, and is rumoured to be the front-runner for acquiring Wade Phillips, the man responsible for assembling the Denver Broncos' Super Bowl winning defence.
Vance Joseph - Denver Broncos
After stepping down from the Broncos, Gary Kubiak vacated one of the most attractive jobs in the league. With a dominating defence that is largely still in tact following SB50 a year ago, and two young quarterbacks, neither of which the organisation is tied too, Joseph has the opportunity to take Denver straight back to the play-offs, after they missed out this year for the first time in five seasons.
After going undrafted in 1995, Joseph spent two years in the league with the New York Jet and Indianapolis Colts. Though a QB and running back at college, he played defensive back, recording two interceptions in six starts.
He returned to his alma mater Colarado to begin coaching, and six years later joined the staff at the San Francisco 49ers. After spending time as a defensive backs coach for the 49ers, Houston Texans and Cincinnati Bengals, Dolphins head coach Adam Gase took Joseph to Miami as his defensive coordinator at the start of this season.
In his opening press conference, Joseph talked about the winning culture in Denver. It will be important for the new coach to make sure that continues from week one, otherwise he will feel the pressure early.
Sean McDermott - Buffalo Bills
McDermott inherits a trickier situation in Buffalo, where he takes over following the sacking of Rex Ryan. Like his predecessor, McDermott is also a defensive minded coach, but will likely enforce a more disciplined approach.
After 11 years with the Philadelphia Eagles, McDermott became defensive coordinator of the Carolina Panthers in 2011. He crafted the Panthers' powerful defence that saw the team into last year's Super Bowl and gained great respect following a 15-1 season.
First order of business will be deciding on his coordinators, and then attention must turn to the quarterback situation brewing in Buffalo. Tyrod Taylor is due northwards of $27m if the Bills commit to him for the 2017 season, and so McDermott will have to decide whether Taylor is the QB to take the organisation forward.
The Bills have been without play-off action for 17 straight years, the longest current streak in the NFL. Fans will be hoping McDermott is the man to turn the organisation into an AFC East contender.
Anthony Lynn - Los Angeles Chargers
It has been a whirlwind year for Lynn, who wasn't even a coordinator at the start of the 2016 season. Now, he leads a franchise in transition, as the team begin their move from San Diego to LA.
As a running back, knee injuries limited Lynn, though he was part of the Broncos team that won back to back Super Bowls in 1997-98.
Lynn has served as a running backs coach for five different NFL franchises, employing a 'ground and pound' offensive style to keep opponents off the field.
Former Jaguars HC Gus Bradley looks likely to join Lynn as defensive coordinator for the new-look Chargers, while current offensive coordinator Ken Wisenhunt is thought to be safe.
The first task for Lynn will be to oversee the franchise's 120-mile relocation, before turning his attention to team affairs. He will be hoping for more luck with regard to injuries than his predecessor Mike McCoy, who battled key absences throughout his tenure.
Doug Marrone - Jacksonville Jaguars
The first coach to secure employment, Marrone was already working for the Jaguars under former head coach Gus Bradley. He then took over as interim HC after Bradley was fired in week 15.
Marrone also served as a head coach with the Bills, leading the team to their best record in a decade, but left after falling out with the owners - a move which upset both players and fans.
Two-time Super Bowl winning head coach Tom Coughlin has been brought in as executive vice president of football operations, while general manager Dave Caldwell remains in place.
Quarterback Blake Bortles had a poor third year, and Jaguars fans will hope that the presence of Coughlin and Marrone can improve the productivity of an offence that promised much and delivered very little in 2016.
Who next for the 49ers?
Both Josh McDaniels and Kyle Shanahan are still available, despite having had several interviews for head coaching positions. With the two offensive coordinators still in the play-offs - McDaniels with the New England Patriots, Shanahan for the Atlanta Falcons - their positions may become clearer when their respective seasons end.
Lynn, McDermott and McVay were the other coaches who interviewed in San Francisco, but with all three now employed elsewhere, it looks like a straight competition between McDaniels and Shanahan.
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