Belichick worked as a defensive coordinator under head coach Bill Parcells from 1997-99. When Parcells stepped down in 1999, Belichick took over the Jets for a grand total of one day. Soon after announcing his resignation to the media during his introductory news conference, he replaced Pete Carroll as head coach of the New England Patriots. (AP Photo/John Dunn)

Replacing Chuck Knox was always going to be a tough task, and that's what George Allen tried to tackle with the Los Angeles Rams at the start of the 1977 season. But after two uninspiring performances by the Rams in the preseason, team owner Carroll Rosenbloom fired Allen, which gave him the opportunity to work as a football analyst for CBS Sports. (AP Photo/ Lennox Mclendon)

Pete McCulley, right, shown here with O.J. Simpson, won only one of the nine games he coached for the San Francisco 49ers during the 1978 season before being shown the door. He was replaced by interim coach Fred O'Connor. (AP Photo/Paul Sakuma)

Lou Holtz made a name for himself at Notre Dame, but his only foray into the professional ranks was forgettable. Holtz led the Jets to a 3-10 record in 1976 before resigning with one game left in the season. (Associated Press)

The former Arkansas coach saw his NFL coaching career last just 13 games with the Atlanta Falcons in 2007. A 3-10 record cemented a firing so abrupt that he left notes in players' lockers telling them he was no longer their coach rather than telling them in person. (AP Photo/John Bazemore)

Art Shell's second stint as head coach of the Oakland Raiders didn't last long. After coaching the Raiders from 1989-1994, Raiders owner Al Davis re-hired Shell in 2006. But the Raiders struggled and Shell was fired after a 2-14 season. (AP Photo/Julie Jacobson)

In 2006, Cam Cameron was one of the hottest names in the NFL after helping orchestrate the high-powered San Diego Chargers' offense. But when his 2007 Miami Dolphins lost 13 games in a row before finally finishing with a league- and franchise-worst 1-15 record, Cameron and his staff were fired.

Hue Jackson inherited an Oakland Raiders program in disarray. The previous coach -- Tom Cable -- had taken over the reins from Lane Kiffin after Al Davis fired Kiffin four games into the 2008 season. Fast-forward to 2010, when then-offensive coordinator Jackson helped the Raiders finish 10th in overall offense, and was given the keys to the franchise by the ailing owner. Davis died four games into the 2011 season, and Jackson's Raiders finished a disappointing 8-8 after a 7-4 start. (AP Photo/Greg Trott)

After joining the Seattle Seahawks as assistant head coach in 2007, Jim Mora took over the team in 2009 when Mike Holmgren retired. He signed a five-year contract, estimated at $4 million per year, but then limped through the 2009 season with a 5-11 record. He was fired less than one year after his first press conference as coach, with three years and $12 million left on his contract. (AP Photo/Greg Trott)

Pete Carroll successfully took over the Seattle Seahawks from Jim Mora in 2010, but in 1994 the transition to New York Jets was a little bumpy for the new head coach. Carroll, previously the Jets' defensive coordinator for four years, was promoted from within for his first head-coaching gig, but after his 6-5 team fell prey to the Miami Dolphin's famous "fake spike" play, the Jets didn't win a game the rest of the season. (AP Photo/NFL Photos)

From 1992 to 2004, the Green Bay Packers only had one non-winning season. That year was 1999, and the Pack went 8-8... and their head coach was Ray Rhodes. The Packers had gone to the playoffs six years in a row prior to 1999 under Mike Holmgren, but Holmgren had left for Seattle and Rhodes was hired after being the only coach to interview for the position. The previous year, Rhodes' talented Philadelphia Eagles had gone 3-13, and after missing the playoffs despite having the same record as two playoff-bound teams, Rhodes was fired from his second head coaching job in two years. (AP Photo/Mike Roemer)

In 2001, Marty Schottenheimer's Washington Redskins became the first team in NFL history to win five consecutive games after losing its first five games. The 'Skins went on to win eight of their final 11 games but missed making the NFC's final playoff spot. But Schottenheimer's historic win-streak fell victim to Redskins owner Daniel Snyder's desire to hire then-University of Florida coach Steve Spurrier. Spurrier lasted two years in Washington, going 12-20. Schottenheimer moved on to San Diego, where he was fired in 2007 with a 14-2 record after butting heads with general manager A.J. Smith. (AP Photo/Nick Wass)