What happened: For the first time in MLB history, a division champion will finish the regular season with a .500 or worse record. The Astros and Rangers both lost their games on Friday, mathematically guaranteeing that the American League West winner will finish no better than 81-81.

Why it matters: The outcome highlights a historically weak division race where the champion will reach the postseason without posting a winning record. This historic low finalizes the scenario that was looming as AL West rivals risked a sub-.500 division title heading into the final weekend.

What to watch: The remaining weekend slate will determine which team officially claims the American League West crown.