PFF recently went through its all-time highest graded players at each position or certain facets of the game, and it turns out that former Indianapolis Colts Pro Bowl cornerback Vontae Davis remains their best graded cornerback from his impressive 2014 campaign:
Defensive Grade: Vontae Davis, Indianapolis Colts (93.3; 2014)
Most remember Davis for his impromptu retirement during halftime of a 2018 Week 2 matchup between the Buffalo Bills and Los Angeles Chargers, but he does also lay claim to the best PFF defensive grade at corner. Davis just barely overtook Asante Samuel’s record, set back in 2006, by just 0.