Data sample is from the 2013 - 2024 seasons. 1570 unique season + team combinations.

58.5% of teams committed fewer penalties in the second half of the season than in the first half, suggesting that teams tend to become more disciplined as they gain experience over the course of the year.

This is a cool visualization! The NE vs ATL chart is wild

Thanks @statsbylopez.bsky.social, Tom Bliss, and everyone else is involved in running this, it’s a fun competition!

And the y-axis label on the second plot should say "Rush Yards Gained", as there is no averaging going on in that plot.

When not taking the aggregated mean of rush yards gained by the number of defenders in the box, the relationship is less clear. However, the first slide still shows that on average, adding defenders to the box stops the run. The first approach smooths out play-to-play variability.