IMAGE: Kansas City Chiefs quarterback Patrick Mahomes (15) greets wife Brittany Mahomes prior to a game against the Los Angeles Chargers at GEHA Field at Arrowhead Stadium. / Jay Biggerstaff / Imagn Images

Sunday night at Arrowhead wasn’t just about Patrick Mahomes doing what Patrick Mahomes does. It was also about receipts. One particularly loud one came from Mahomes' wife, Brittany, after the Kansas City Chiefs took care of business in a 30-17 win over the Detroit Lions.

Before the Sunday Night Football clash, Lions rookie cornerback Terrion Arnold tried to get into Mahomes’ head-digitally, at least-by posting a meme that implied trouble was brewing for the two-time MVP. It featured a photoshopped version of the popular WWE meme, which usually shows someone about to be blindsided. For Arnold, the message was clear: your fun’s about to be over.

Fast-forward a few hours, and Mahomes had flipped the narrative. He carved up the Lions defense, found his rhythm early, and led Kansas City to another convincing win.

Arnold's pregame bit? It aged poorly.

And Brittany Mahomes wasn’t going to let that slide.

After the game, she took to social media and reposted Arnold’s meme on her Instagram story-an unmistakable way of reminding everyone exactly how things actually played out on the field. She didn’t stop there, either. She shared multiple game-day moments, including a hype shot of her husband making his pregame entrance and several clips of him in action, doing what he does best.

Brittany was part of a solid star-studded support section that night, joining Taylor Swift-Travis Kelce's fiancée-and WNBA phenom turned Kansas City superfan Caitlin Clark. Call it a who's who at Arrowhead, but it turned into yet another celebration of winning football in the Midwest.

But as the scoreboard settled, the tension on the field didn’t. What should’ve been a routine postgame handshake turned into a full-blown brawl. It started when Lions defensive back Brian Branch ignored a handshake from Mahomes and instead took a swing at Chiefs receiver JuJu Smith-Schuster.

Smith-Schuster hit the turf hard. But he didn’t stay down.

He popped up, chased Branch down, and dragged him to the ground-igniting a fracas that brought players from both sidelines into the mix. As things escalated, Mahomes found himself in the middle of it, doing damage control and trying to keep Chiefs players from getting too involved.

The scene ended with Smith-Schuster walking away with blood streaming from his nose, a towel pressed to his face as he made his way to the locker room.

In his on-field postgame interview, Mahomes downplayed the incident. “I mean, we play the game in between the whistles,” he said, clearly unimpressed.

“They can do all the extracurricular stuff they want to do. We will play the game in between the whistles.”

Lions head coach Dan Campbell had no interest in defending his player afterward. He stepped up to the podium and didn’t mince words about Branch’s actions.

“I love Brian Branch, but what he did is inexcusable and it’s not gonna be accepted here,” Campbell said. “It’s not what we do and it’s not what we’re about.

I apologized to Coach Reid, to the Chiefs, and to Smith-Schuster. That’s not what we do.

He knows it. Our team knows it.”

Branch, for his part, offered a version of the backstory that carried some frustration. He claimed he was goaded by Smith-Schuster and said officials missed what he believed was an illegal block in the back during the play that preceded the brawl.

“I’m tired of people doing stuff in between the play and refs don’t catch it. They’re trying to bully me out there,” Branch said.

“I got blocked in the back illegally-it was right in front of the ref and he didn’t do anything. I could have gotten hurt.

But still, I shouldn’t have done that. There was a lot going on-but I shouldn’t have reacted.

I apologize for that.”

The NFL has since confirmed that it's investigating the melee and will decide on disciplinary actions once the review is complete.

On a night where the defending champions added another notch to their win column, Mahomes didn't let distractions, memes or melees pull focus from the bigger picture. The Chiefs are back in rhythm-and they just sent a loud reminder that talking isn’t nearly as effective as executing.

Especially when No. 15 is taking snaps.