Bookend DEs create havoc with blocking schemes

The biggest mismatches of Week 13 feature the New York Giants' defensive ends Michael Strahan and Osi Umenyiora going up against Dallas Cowboys tackles Rob Petitti and Torrin Tucker. LDE Strahan and RDE Umenyiora have combined for 17.5 sacks; ROT Petitti is a first-year starter and LOT Tucker is a backup forced in to the starting lineup due to the season-ending injury to Flozell Adams.

This is a matchup the Cowboys have feared for some time, but after Umenyiora's performance last week against Seattle All-Pro left tackle Walter Jones, they will have to make significant changes to their pass protection schemes.