How Pro Football Focus grades punters, NFL News, Rankings and Statistics
Exclusive Relationship: SportsDataIO to Provide Stats and Odds For Pro Football Focus
How PFF grades all positions at the NCAA and NFL levels, NFL News, Rankings and Statistics
Pro Football Focus on NBC, NFL News, Rankings and Statistics
Measuring beyond girth: How offensive linemen are graded in the NFL - Sports Illustrated
The PFF 101: Highlighting the top 101 players from the 2022 NFL season, NFL News, Rankings and Statistics
How does PFF grade each position? – Pro Football Focus
The 100 best single-game grades of the PFF era, NFL News, Rankings and Statistics
PFF All-Decade Team: The Best of 2006–2015, NFL News, Rankings and Statistics
One stat to know for all 32 NFL teams before the 2023 season, NFL News, Rankings and Statistics
PFF top-10 positional rankings: Calais Campbell, Jalen Ramsey, A.J. Bouye make list - Big Cat Country
PFF Signature Statistics – a glossary, NFL News, Rankings and Statistics
PFF's position rankings ahead of the 2019 NFL season, NFL News, Rankings and Statistics
Can Pro Football Focus Stats Be Blindly Trusted? – Boston Sports Media Watch