The New England Patriots have an NFL-best 20-4 record at home over the last three seasons. But does that mean the Patriots have the best home-field advantage in the league?



That depends on how we define home-field advantage. The Patriots have been tough to beat everywhere. Their NFL-best road record (18-6) hasn’t been much different.



What the following exercise tries to determine is which teams have performed significantly better at home than on the road over the past three seasons. To be clear, this is not a ranking of which teams have had the best home records or have been especially tough to beat at home. The focus is on the difference between home and road performance. A mediocre team that is good at home but terrible on the road will rank higher than a team that is great at home and very good on the road.



Rather than focus on straight winning percentage, I chose to use Football Outsiders’ DVOA metric, which offers a better measure of overall...