Jacksonville Jaguars outside linebacker Arden Key's wallet just got a little lighter. 

The NFL fined Key for a hit on Kansas City Chiefs backup quarterback Chad Henne, but Key was not penalized for his actions that led to Patrick Mahomes' ankle injury.

Mahomes suffered a high ankle sprain after his ankle got caught between Key and another Jaguars defender during last weekend's divisional round playoff game. 

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Mahomes briefly exited the game and was replaced by Henne. In Mahomes absence, the veteran backup led the Chiefs on a touchdown drive to extend the Chiefs' first-half lead to 17-7.

MICHAEL VICK THINKS PATRICK MAHOMES' ANKLE INJURY WILL ACTUALLY HELP CHIEFS

With less than six minutes remaining in the second quarter, Key was penalized for roughing Henne. The NFL fined Key $15,914 for roughing the passer, NFL Network's Tom Pelissero reported Saturday.

After initially being ruled as questionable to return, Mahomes was back under center to start the third quarter.

The MVP candidate was a full participant in practice earlier this week, and head coach Andy Reid has confirmed the quarterback will play in the AFC title game Sunday.

Mahomes routinely makes throws from outside the pocket. It remains unclear how much the ankle injury will hamper his mobility Sunday.

But Reid expressed confidence in the game plan and noted that any plays called during the game will work around any possible limitations Mahomes could have.

"We have enough in the game plan where you can kind of pick and choose where you want to go with it,'' Reid told reporters. "You have a variety of things that you can go to. Obviously, you don't use all the plays in the game plan, but they're available. And so if you have to go a certain direction, you can go that direction with the calls."

Kansas City safety Bryan Cook was also fined $5,906 for taunting after an interception in the fourth quarter of the Jan. 21 game.

As the Kansas City Chiefs and Cincinnati Bengals prepare for Sunday’s game that sends the winner to the Super Bowl, there’s been a decent amount of chatter coming from both sides. 

During Cincinnati’s win over the Buffalo Bills in the AFC divisional round, Bengals defensive back Mike Hilton referred to the Chiefs' home, Arrowhead Stadium, as "Burrowhead," a reference to Bengal quarterback Joe Burrow's success there.

"We’ll see y’all in Burrowhead," Hilton said on the sidelines. 

On Thursday, Kansas City linebacker Willie Gay was asked what impresses him about the Bengals’ offense. 

MICHAEL VICK THINKS PATRICK MAHOMES’ ANKLE INJURY WILL ACTUALLY HELP CHIEFS

"Nothing," Gay replied with a stern look.

It’s a budding rivalry as the two teams prepare to play each other in the AFC championship game for the second consecutive year. 

The Bengals have defeated Kansas City the last three times the two teams have met and in seven of the last eight against the Chiefs. 

One member of the Chiefs has a ton of experience playing the Bengals, with wide receiver JuJu Smith-Schuster squaring off against Cincinnati nine times in his career as a former member of the Pittsburgh Steelers. 

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"I’m sure a lot of guys are aware of the comments that they’re making," Smith-Schuster said, according to USA Today. "I’ve been playing against this team since I’ve been the in NFL, so it was nothing new to me. 

"The Bengals, they’ve always been the rah-rah team. And you know, they back it up. And so they’ve been doing that this whole season. So it’s just more so for us, for me, to go out there and just play, just play ball and have fun. And just talking with my shoulder pads and helmet."

Smith-Schuster spent the first five years of his career with Pittsburgh, where he squared off with Cincinnati twice a year. 

"I just think, honestly, they’re just a physical team," said Smith-Schuster. "They just play physical from start to finish, all four quarters. That’s something I saw playing them in Cincinnati, and it felt like a playoff atmosphere game, and that’s kind of what I’m expecting to see here."

In Kansas City’s matchup with the Bengals in Week 13, Smith-Schuster had three catches for 35 yards.