NFL QB Index, Week 1: Ranking all 32 starters entering 2022 season
Chad Graff on X: Final 2021 QB stats. Kirk Cousins ranked 14th in EPA+CPOE, 13th in adjusted EPA/play, 22nd in success rate, 11th in completion percentage, 10th in yards per attempt, and
Ranking all 32 starting NFL quarterbacks coming into the 2021 season: numbers 23-32 - Blogging The Boys
NFL power rankings Week 1 2021: Packers crumble, Cardinals rumble
2021 NFL Draft: Ranking the top 11 quarterbacks
NFL QB Index: Ranking all 32 teams' primary starting quarterbacks at the end of the 2021 regular season
NFL Quarterback Council 2023: Ranking top 10 QBs by trait - ESPN
PFF Quarterback Rankings: All 32 starters ahead of the 2021 NFL season, NFL News, Rankings and Statistics
Offensive Player Rankings, Week 9: Re-drafting the 2021 QB class! Sorting Fields, Lawrence and Co.
Final 2020 quarterback rankings, NFL News, Rankings and Statistics
The 2021 NFL QB Class Was a Floor Vs. Ceiling Debate. Both Are Failing. - The Ringer
Top 100 NFL Quarterbacks of the 21st Century: Part VIII (5-1) – Captain Comeback: NFL Analysis by Scott Kacsmar
PFF College on X: . @pff_seth's 2021 NFL Draft QB Rankings / X
NFL Quarterback Council 2022 - Ranking the top 10 QBs in arm strength, accuracy, decision-making, rushing ability, more - ESPN
NFL quarterback rankings 2021: Patrick Mahomes, Aaron Rodgers top list – NBC Sports Philadelphia