The Athletics beat the Seattle Mariners 7-6 on Friday night in Seattle, and if you follow this Athletics vs Mariners series with any real feeling, you already know a one-run September loss at home is the kind that sits with you through breakfast.

I'll be straight with you: I don't have the full box in front of me yet, just the final. But 7-6 is not a quiet number. Thirteen runs crossing the plate in a September ballgame means somebody's bullpen was breathing hard by the eighth, and it means the last three innings were played by men who could feel every pitch. That's the shape of the game whether or not I can name the arms.

What makes it land is who did it. The Athletics are a franchise in transit, playing home games in a minor league park in West Sacramento while Las Vegas gets poured. A team living that life doesn't get many chapters of its own in September. What it gets is the spoiler's role, walking into somebody else's important weekend and taking a night that wasn't offered. Friday, they took it.

checked the almanac: this division gave us the 2001 Mariners winning 116 games and the 2002 A's ripping off 20 straight. the AL West has a long, documented history of doing strange things to people in September. nothing new under that sun.

The two clubs meet again in Seattle tonight at 9:41 PM ET. What I'm watching is simple and it's mostly about mileage. A 13-run game leaves a mark on both relief corps, and the middle game of a weekend set is where you find out which manager has arms he actually trusts and which one is holding a chart and hoping. I'm also watching whether the A's can back it up. One night is a night. Two is a statement, and September has a way of separating the two.