The Cardinals have not beat the Rams in Arizona since the 2014 season.
That’s quite the stat, particularly given they’ve had an opportunity to beat them every season. Even with the Cardinals were very good under Bruce Arians and Carson Palmer, the Rams still had their number.
Then, of course, the trend shifted and the Rams become a powerhouse under Sean McVay. Most of the home matchups between the Rams haven’t been particularly close, either.
Four of the last five home matchups against the Rams have been won by double digits in favor of the Rams. Of course, most of that was when the Cardinals weren’t very good, but it’s still worth noting.