EPA (expected points added) values each play by how much it changed the expected points of the drive, given down, distance, field position and time. Dropback EPA covers passes, sacks and scrambles; rush EPA covers designed runs only. Success rate counts plays with positive EPA. PROE is pass rate over expected: how often a team throws compared with what an average team would do in the same spot. Regular season only, two-point tries included as in the season totals. Home and away, score and last-4 filters apply from each team's side: a defense's “leading” plays are the ones its team led before the snap. The score before each snap comes from the ESPN play log. Source: nflverse play-by-play.