The Patriots are visiting the Seattle Seahawks in a stadium that is universally lauded for its deafening noise, but New England will also have to come to terms with a highly touted, yet underappreciated defense.

The Seahawks come into Sunday’s game as the surprise No. 1 overall defense in the NFL, holding opponents to 258.6 yards per game and are second in points allowed (14.0). They have yet to allow an opponent to score more than 20 points in a game, and in wins against the Dallas Cowboys, Green Bay Packers, and Carolina Panthers, the Seahawks have given up a total of 31 points. The transition to the league’s top defense is a huge jump from last season’s No. 9 overall ranking, when Seattle held opponents to 332.2 yard per game.