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GLOSSARY:
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.
Expected Points describes how many points, on average, a team is expected to score on a possession given a particular field position
EPA 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/
EPA Pass the Expected Points Added on plays when a quarterback attempts a pass, excluding scrambles and sacks
EPA Rush the Expected Points Added on designed rushes, excluding scrambles and sacks
Weighed EPA attempts to improve the predictive power of EPA by increasing and decreasing the prominence of certain types of plays when calculating EPA. Plays that impact outcome, but do so randomly (i.e. a recovered fumble) are discounted, while plays that predict future performance are overweighted (i.e a team’s performance when the game is close)
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.