Below is a scatter plot showing the Game Scripts (on the X-Axis) and pass ratio (on the Y-Axis) of every game so far this season. I have also provided a best-fit line:
Unsurprisingly, there’s a negative correlation between Game Script and Pass Ratio. In general, teams are expected to pass about 3% less often for every 4 points of Game Script. In other words, based on six weeks worth of 2018 data, with a Game Script of +7.5, teams are expected to pass 54.7% of the time; at +11.5, the expected pass ratio would be 51.7%.
The table below shows the results from each game this season. It is sorted from most run-happy to least. The Bills/Titans game leads the way by a large margin. In that game, Buffalo had a Game Script of +2.5, which means you would expect the Bills to pass on 58.3% of plays; instead, Buffalo passed on just 31.7% of plays, a difference of 26.6%. That makes it the most run-heavy game of the year, which we wrote about at the time.
And finally, here are the full season ratings. The Bills, Titans, Seahawks, 49ers, and Jets are the five most run-heavy teams this season. Meanwhile, the AFC North has three of the most pass-happy teams in the NFL:
Oh, and perhaps the most surprising result: the Bears have the best average Game Script this season, based mostly on the demolition over Tampa Bay.