Instead, they use a bewildering array of defensive shifts, disguised zones and coverage rotations to befuddle opposing quarterbacks and put safeties Thomas DeCoud and William Moore in prime position to force turnovers.

WSJ: NFL: All Four Teams Make a Super Case

He often has the Giants' defensive back play a "cover-2 shell, " a soft zone coverage that takes away deep routes and gives New York's defensive line time to harass an opposing quarterback.

WSJ: Again, Giants Are Brady Kryptonite

Amid the early stages of The Capitulation at Gillette, the Patriots built such a big lead that they changed their defensive alignment in the secondary, shifting from man-to-man coverage to Cover-2.

WSJ: Jets Have Reasons to Believe