Let’s start with something you already know.
in 2018, the Kansas City Chiefs defense was ranked 31st in the NFL. That’s the number that national media voices — and many local ones, too — have been throwing out when discussing the Chiefs defense ever since the closing weeks of the 2018 season.
If you’re going to make your judgment about the 2018 Chiefs defense strictly based on of the number of yards they allowed, that’s the right number to use. The Chiefs allowed 6,488 yards last season, which was indeed 31st in the NFL.