GLOSSARY:

Expected Points describes how many points, on average, a team is expected to score on a possession given a particular field position

Expected Points Added is the difference between a team’s Expected Points at the end of a play and their Expected Points at the beginning of a play EPA can be viewed on a per play basis or per game basis EPA simply connects the dots between two game states. If a team ended the play with more Expected Points than they started, then EPA will be positive. If a team is left less likely to score at the end of the play, then EPA will be negative. https://www.nfeloapp.com/analysis/expected-points-added-epa-nfl/

Success Rate Term used to measure efficiency by determining whether every play of a given game was successful or not. The terms of success in College Football: plays that gain at least 50 percent of necessary yardage on first down, 70 percent on second down, and 100 percent on third and fourth down. NFL: play that gains at least 40% of yards required on 1st down, 60% of yards required on 2nd down, and 100% on 3rd or 4th down.

Eckel (AKA Quality Possession) Offensive: How often your offense generates a big play touchdown or a first down inside the opponent’s 40 on any given drive.