An up-to-date list of stats apps on this site.
Supports full play-by-play back to 1999. Includes completion probability (cp) and completion percentage over expected (cpoe) in play-by-play going back to 2006.
A simple guide for getting up and running using nflfastR data in R.
The evidence behind “running backs don’t matter”, “sacks are a quarterback stat”, and a lot more. What is CPOE? What is EPA? Plus links to recommended reading.
EPA per play at the team and individual level along with a win probability figure and the 10 biggest plays of the game by EPA.