The New Orleans Saints have recorded just six sacks over the first four weeks of 2012.

"Yeah, that bothers me," Aaron Kromer said. "That bothers the defense, mostly. Coach Spagnuolo is working on it with (defensive line) coach (Bill) Johnson. They're working at pass rush and how to get there with a blitz, how to get there with a four-man rush and how to get there and contain them with a three-man rush. They're definitely on it."

Spagnuolo's zone-pressure scheme has the Saints ranked last in the NFL in yards allowed.

"It's a challenge anywhere," Spagnuolo said. "It doesn't matter where you are or what players you have or what scheme you run. Offenses are pretty good and affecting the quarterback is the thing you have to do whether you do it with four or three (players). I believe in just mixing it up. We have to find a way to mix it better and find a way to win a couple of these one-on-one matches."