The writing is on the wall for a number of unsuccessful NFL head coaches as the season draws to a close, but there could be some surprise firings, too.
Here are five coaches who don't appear to be on the hot seat, but whose jobs might not be as secure as you think.
Ron Rivera
You don't have to do much digging to see the signs that something is amiss in Carolina.
A year after riding a wave of success all the way to the Super Bowl, the Panthers started the season 1-5 and at best will win eight fewer games than in 2015.
Along the way, the NFL's reigning MVP Cam Newton took weekly poundings behind a terrible offensive line, was benched for not wearing a tie, and had Rivera suggest he needs to go back to basics with his throwing mechanics.
The Panthers look old, stale, and like a team whose championship window is rapidly closing. Have the players tuned out Rivera? Most importantly, has Newton?
"I believe this is a blip," Rivera said of this season.
The Panthers could decide hitting the reset button is what they need to get Newton and Co. back on track.
Mike Mularkey
Would the Titans really fire Mularkey after he took them to at least eight wins, their best season in half a decade? It's less far-fetched than it seems.
Though on the surface it may look like Mularkey got all he could out of this roster, there are reasons to believe the opposite is true. Marcus Mariota is developing into a star, but the Titans still don't seem to know how to play to Mariota's strengths and get the most from him as a runner as well as a passer.
With their playoff hopes resting on a Week 16 game against the lowly Jaguars, the Titans came out completely flat. Responsibility for that falls on the coaching staff.
The Titans promoted Mularkey from interim head coach to the permanent job because he's cheap. They're getting what they paid for.
General manager Jon Robinson is building a roster that's ready to exceed the 8-8 ceiling Mularkey brings. Robinson has ties to the Patriots and could decide now is the time to convince Titans ownership to oust Mularkey and open their wallets for Josh McDaniels.
Mike Zimmer
A season that started with so much promise will end in shambles in Minnesota. It could result in the team moving on from a head coach who looked like the front-runner for Coach of the Year honors when the Vikings were 5-0.
Zimmer's inability to coexist with offensive coordinator Norv Turner led to the latter quitting his job mid-season. Zimmer seems to be losing his locker room, too, with the most obvious example being his team's defensive backs ignoring the game plan in a mutinous Week 16 loss to the Green Bay Packers.
The Vikings have major question marks at quarterback, running back, wide receiver, and offensive line entering 2017. They also lack a first-round pick (though blame for that extends beyond Zimmer to GM Rick Spielman).
The Vikings went all-in to make the playoffs in their first season in a new stadium. It didn't work.
Rebuilding is necessary, at least on offense, and if ownership doesn't believe defensive specialist Zimmer is the right man for the job then there's no reason to keep him around.
Chuck Pagano
Colts owner Jim Irsay said he's "not anticipating making any changes" at head coach or GM after giving Pagano and Ryan Grigson contract extensions in the offseason. Can we really take Irsay at his word?
Despite Andrew Luck staying healthy for most of the season, the Colts took a big step back from where they were in Luck's first few seasons.
Perhaps the majority of blame for that should fall on Grigson's shoulders, as he failed yet again to build a competent roster around Luck. But Pagano's own failings are also very apparent: he's a defensive coach who has presided over nothing but bad defenses since arriving in Indianapolis.
The only thing that would make Pagano's firing a shock is the money owed on his contract. Irsay may just have to swallow hard and pay the price to avoid wasting yet another year in Luck's career.
Bruce Arians
A popular pick to win the Super Bowl, Arians' Cardinals will finish with their first losing season since he took the job in 2013.
Carson Palmer's regression is a major reason for it. The 37-year-old may have hit the wall and the Cardinals don't have an potential heir on the roster. Larry Fitzgerald is approaching the end, too, and a receiving corps that was once feared now looks perilously thin.
Arians' has hitched his wagon to his veterans and it might result in him following them as they fall off a cliff, as every player eventually does.
Arians' own age and health must also be considered when the Cardinals look to the future. He's 64 and was hospitalized after complaining of chest and stomach pains in August and November.
The Cardinals will probably regroup and take one more shot at a Super Bowl with their aging core, but perhaps it would be advantageous to start the transition to a new era now.