New York Giants’ defensive coordinator Perry Fewell is signed through the 2012 season according to two sources.

Fewell signed the extension after interviewing for head coaching positions with Carolina, Cleveland, Tennessee and Denver last year.

Fewell’s defense struggled at times this season after losing several key players like cornerback Terrell Thomas and middle linebacker Jonathan Goff to season-ending injuries. The Giants have also had to play stretches of the season without defensive ends Osi Umenyiora and Justin Tuck and linebacker Michael Boley due to injuries as well.

The team's top two draft picks -- cornerback Prince Amukamara and defensive tackle Marvin Austin -- were also hurt in training camp. Amukamara missed the first nine games of the season while Austin suffered a season-ending pectoral injury in the preseason.

Former Giants defensive coordinator Steve Spagnuolo will be in the market for a job after he was fired by the Rams as head coach. But the Giants’ defense is playing some of its best football of the season now after holding the Jets and Cowboys to 14 points each in the last two weeks.

The Giants have 11 sacks, 13 quarterback hits and three interceptions in the last two games and Fewell now has Pro Bowl defensive ends Jason Pierre-Paul, Tuck and Umenyiora together and healthy going into the playoffs.