After holding the highest-scoring offense in NFL history to only eight points in Super Bowl XLVIII, there is little doubt the Seattle Seahawks' Legion of Boom ended last season as the best secondary in the NFL. With Richard Sherman and Earl Thomas signed to long-term contract extensions, it would seem that this group is poised to keep that title for a long time.
However, that title reign may come to a close much sooner than expected, due to a strong challenge from the New England Patriots. When the offseason acquisitions of Darrelle Revis and Brandon Browner are added to the other personnel changes made in Seattle and New England, a strong case can be made that the Patriots will have the best secondary in the NFL in 2014 -- not the Seahawks. Let's look at the key reasons why.
State of the secondaries, as of the end of the 2013 season
A good place to start this comparison is by noting where these secondaries were at the conclusion of last season.