The Cardinals aren’t just heavy favorites over the Texans on Sunday. They’re the heaviest favorites of this NFL season.
Arizona is now listed as an 18-point favorite over Houston at most sports books, which is the biggest point spread so far in the 2021 season. The previous biggest spread also featured Houston, as a 17.5-point underdog at Buffalo in Week Four. Buffalo won 40-0.
It’s not just that the Cardinals are 6-0; they’re also winning their by an average of 14.2 points a game. And the Texans aren’t just 1-5, but they have a league-worst point differential of -80, meaning in an average game they lose by 13.3 points.
According to the data at Pro Football Reference, an underdog of 18 points or more has only won outright once: Super Bowl III, when the 18-point underdog Jets beat the Colts 16-7.