In the NFL, two people receive 99 percent of the credit when a team wins—the quarterback and the head coach.
While each deserves much credit, there are men working behind the scenes who deserve special mention.
They are the men filling job openings in Carolina, Cleveland, Oakland and Minnesota. They are the men mentoring and guiding young stars like Sam Bradford, Matt Ryan and LaMarr Woodley. They are the next crop of head coaches in the NFL.
Meet the 20 best assistant coaches in the NFL.
Special teams coaches used to be the forgotten men when it came time to fill job openings at the head coach level.
And then John Harbaugh led Baltimore to three straight playoff births.
Since Harbaugh's move from special teams coach for the Eagles to the big-boy chair in Baltimore, more and more NFL owners are taking a look at special teams coordinators.
The best in the business is Joe DeCamillis of the Dallas Cowboys.
DeCamillis is widely regarded as one of the best and brightest coaches in the league. Keep his name in mind for potential job openings after the 2011 season.
The 2010 Atlanta Falcons were fifth in the NFL in points allowed and seventh in turnovers.
The credit goes to Brian VanGorder.
A linebackers coach by trade, VanGorder can be thanked for the steady play of the Atlanta front seven over the past three seasons, as well as the development of cornerback Brent Grimes from a relative unknown to a Pro Bowl player.
Former players always do well when interviewing for head coaching jobs. Former players who have coached under Bill Belichick for the last 10 years will do much better.
Pepper Johnson has been a coach for Belichick since the 2000 season, working mostly with linebackers and defensive linemen during that time.
The Patriots structure is such that they do not have a defensive coordinator, but the responsibilities of that job fall to Johnson. And he's done one hell of a job with the young talent on defense.
There are many things on Winston Moss' resume to get excited about.
He has played in the NFL, so that's a big plus. He has also worked under one of the game's best defensive coordinators, Dom Capers, in both 3-4 and 4-3 systems.
Moss' flexibility, knowledge and role as assistant head coach will make his name a hot one when NFL head coaching jobs become available.
Had Mike Singletary not completely wet the bed as the head coach of the San Francisco 49ers, he would be much higher on our list.
As one of the greatest linebackers in NFL history, Singletary is revered in the eyes of most NFL owners, writers and fans.
But as a head coach, he was just not good enough. Here's hoping a return to assistant status will be a nice change for Singletary.
Bruce Arians may never be a head coach in the NFL, but he'll definitely end his career with more Super Bowl rings than most head coaches will ever see.
Arians, as a member of the Pittsburgh Steelers' coaching staff, has won two rings during his tenure with the team. His first coming in 2005 as the team's wide receivers coach and then again in 2008 as offensive coordinator.
Arians work with Ben Roethlisberger should have given him more chances at a head coaching position, and perhaps that work will be recognized in the future by an NFL owner looking for a steady hand to run his team.
Here is all you need to know about Bill Musgrave.
He's the man responsible for getting Matt Ryan ready for the NFL after the Atlanta Falcons made him the No. 3 overall pick in the draft.
The same Matt Ryan who led his team to the playoffs in his rookie season.
And that's the same Matt Ryan who has voted to the Pro Bowl as a rookie.
Musgrave's name is on our short list of assistant coaches to watch in 2011.
Say what you will about Mike Martz, his offense works.
Martz' offense has produced one Super Bowl win, two Super Bowl appearances and three NFC Championship births.
The work Martz did in Chicago during the 2010 season was perhaps his best work.
With the Bears offense struggling early in the year, Martz made changes to his famous spread attack and focused on getting the ball to running back Matt Forte' more often.
The change paid off. Chicago made it all the way to the NFC Championship game.
Pettine is a former high school coach who fought his way to the top of the NFL coaching tree with knowledge, a great background in the game and a way of dealing with players that caught the eye of Rex Ryan.
Pettine followed Ryan to the Jets, where he has become a reliable defensive coordinator for the Jets' head man.
Pettine may not get the credit he is due, but his name is on a hot list of assistant coaches in the NFL.
I have to admit that I had not heard much about Chuck Pagano until chatting with cornerback Fabian Washington last summer.
Pagano's work with the Baltimore secondary has been superb, especially considering the lack of talent he is working with.
Pagano will take over the job as defensive coordinator this fall, replacing Greg Mattison, and all eyes will be on how he does with a talented defensive roster.
We are now entering a steady stream of former NFL head coaches who have been demoted to coordinator status but are really good at coaching one side of the football.
Wade Phillips has proven multiple times now that he does not have what it takes to be a head coach in the NFL. What he is really good at is coaching defenses. Particularly his 3-4 scheme.
Phillips will bring that knowledge to Houston, where the Texans have the offense to win but need help on defense.
All eyes will be on Phillips as he tries to transform the Texans from a 4-3 to a 3-4 in a matter of months.
Cable resurfaced in Seattle, where he will be Pete Carroll's right-hand man and coach the offensive line.
This is great news for Cable and Seahawk fans.
In Seattle, Cable will be coaching 2010 top 10 pick Russell Okung, as well as top picks from 2011 James Carpenter and John Moffitt.
If the line in Seattle can mesh together quickly, Cable will have done an incredible job and have his name back in the running for head coaching spots.
With a rookie quarterback under his watch in 2009, Brian Schottenheimer's offense scored the 17th most points in the NFL and won nine games.
In 2010, still with a young quarterback, the Jets were ranked No. 13 in points scored and almost made the Super Bowl.
Schottenheimer was a surprise no-hire this past offseason. That will not happen again.
As jobs open up during the 2011 season, Schottenheimer's name will be linked to them all.
The new defensive coordinator of the Dallas Cowboys has two things going for him.
1. He coaches the Dallas Cowboys and is assured mass media attention because of it.
2. His brother is Rex Ryan, head coach of the New York Jets.
Rob Ryan is a fine coach on his own, but it will not hurt that NFL owners think they might be able to tap in to the success of the Ryan family tree by hiring Rob.
On the flip side, there are some NFL owners who see the brash nature of Rex and Rob and shy away from the coordinator.
Either way, and whether he ever becomes a head coach or not, Rob Ryan is one of the game's best defensive coordinators.
When the St. Louis Rams lost coordinator Pat Shurmur to the head coaching job in Cleveland, many in the St. Louis area let out a frustrated sigh.
The hiring of Josh McDaniels should quiet those irritated fans.
And it was under McDaniels that the Patriots scored 75 touchdowns in 2007.
One name that consistently gets mentioned any time there is a head coaching vacancy is that of Mike Mularkey.
The former NFL player has experience as a head coach but is now the offensive coordinator of the Atlanta Falcons. He has also been in the running for top jobs in Detroit and Tennessee in recent years.
Mularkey's balanced offensive attack in Atlanta has caught the eye of many NFL owners. Barring a deep playoff run in 2011, Mularkey will be among the short-list of the best available coordinators for every job opening.
Former player. Super Bowl winner. Hall of Famer. Assistant head coach.
Russ Grimm has a resume that should attract every owner in the NFL, but he has yet to climb the mountain and sit atop as a head coach in the NFL.
And we have no idea why not.
Grimm, who coached under Bill Cowher on the Pittsburgh Steelers staff, was at one time considered for the job opening there once Cowher retired. Turned down for the job, Grimm followed fellow coordinator Ken Whisenhunt to Arizona.
With the Cardinals the two quickly re-shaped the roster and led the formerly terrible team to the Super Bowl.
Still, no calls.
Grimm deserves a chance at a head coaching job. We hope he gets his shot.
If tomorrow I win the lottery and am able to buy an NFL team, should I need a new head coach after the season I am calling Perry Fewell first.
And it has nothing to do with the Rooney Rule.
The fact that Fewell is not a head coach in the NFL is somewhat insulting. As a defensive coordinator he has turned around a horrible Buffalo Bills defense and even served as interim head coach before the team hired Chan Gailey.
As defensive coordinator of the Giants, Fewell led a defense that finished turnovers created and was second in first downs allowed, as well as being No. 7 overall.
Perry Fewell's day in the NFL is coming.
Dom Capers was a miserable head coach (49-81 career record), but history should show that he was never coaching the most talented teams in the NFL either.
As a defensive coordinator for the Green Bay Packers, Capers is experiencing a second-birth in the NFL.
His 3-4 defense is catching on, and variations of it will be ran in San Francisco this fall under Vic Fangio.
Under Capers, the Packers' defense went from No. 21 in 2008 to No. 2 in 2009. In 2010, his defense was the backbone of the team's Super Bowl winning season, ranking No. 2 in scoring defense, No. 5 in total defense, No. 2 in interceptions, No. 2 in sacks, and No. 1 in opposing quarterback passer rating.
Dick LeBeau is arguably the best ever to coach defense...He has done it on such a consistent basis over a long period of time.
- Ron Jaworksi, ESPN Analyst
Who else could top the list of best coordinators in the NFL than Dick LeBeau?
LeBeau has led Pittsburgh to eight Division Championships, four AFC Championships and two Super Bowl wins with his trademark 3-4 defense.
No other assistant coach in NFL history has made the mark that LeBeau has on the NFL landscape. LeBeau is credited with creating the popular "zone blitz" defense used by the Steelers from the mid-90s until today.
He was inducted into the Pro Football Hall of Fame in 2010.
And who else could look that good at 73 years old? That still blows my mind.