NFL team grades for September: Bears get an F, Lions get a B+
Ranking the Absolutely Worst 4 Winless NFL Teams
Ranking every undefeated NFL team through four weeks of 2020 season
NFL on X: Only 7 undefeated teams remain. How many are left
FOX Sports: NFL on X: Retweet if your team is undefeated in 2023
Buying or Selling The 13 Winless and Undefeated NFL Teams
Which 2-0 NFL Teams Should We Trust? - The Ringer
Will Any NFL Team Go Undefeated in 2022-23 Season?
NFL Power Rankings Week 6: Undefeated teams pacing the league
NFL Power Rankings, Week 5: 49ers, Eagles stay on top