The Seattle Seahawks beat the Kansas City Chiefs 20-3 on Sunday night, earning a critical win to move back over .500 at 4-3. 

As the reigning Super Bowl champions, the Seahawks have big expectations, and that win can hopefully go a long way toward helping them hit them again in 2026.

And I'll be honest: I'm thrilled the Seahawks won, but I am also immensely disappointed at what I saw on social media during the game: That T-Mobile Park, the home of the Seattle Mariners, was overrun by Chiefs fans who were there to have a party and support their team. You can even see the Chiefs logo draped all over the T-Mobile Park scoreboard.

This is simple economics. 

1) The Mariners are looking for ways to earn revenue in the offseason. There's nothing wrong with that and every team in baseball is doing it. Whether they host collegiate games at the ballpark in February, host concerts in November, or rent out parts of the ballpark for corporate functions, this is something all teams do. If someone wants to have a birthday party in the bullpen, then they can simply rent it out. I can't really be upset that the M's have found a way to make money and are capitalizing on it.

All revenue is important, especially at a time when the team is at risk of losing gate revenue in 2027 because of a lockout.

I do really have a problem with WHO the Mariners rented this space out to. I'm sorry.

I get the need for money. I get why extra revenue is needed, especially now, and if the money from these parties helps sustain T-Mobile Park employees through a lockout, then great, I get that too. But I can't get over the idea of the Mariners welcoming in visiting NFL fans to take over the ballpark.

I just can't.

The teams in town share a sort of civic brotherhood/sisterhood. It's why you saw Seattle Kraken star Matty Beniers raising the "12th Man" flag before the football game, why you saw Josh Naylor at the Kraken game this weekend, and why you see Seahawks players throwing out the ceremonial first pitch at Mariners games.

There's a kinship among the athletes in town, and there's also a kinship among the organizations in town. 

The organizations constantly wish each other luck, support each other, post on social media for each other and cheer for each other, but in this case? The Mariners didn't do their part in supporting the Seahawks and they didn't do their part in showing civic pride, another responsibility of a team that plays in a city.

Instead, they welcomed in Chiefs fans to take over the ballpark as the Seahawks played across the street.

Is it the world's biggest deal? No. But, it's not a good look, either. At least not to me.