It's time for football again, and time for Doug Farrar of Sports Illustrated and Greg Cosell of NFL Films to preview the 2015 season, division by division. We start with the NFC East, a division with all kinds of questions: Can the Cowboys lean on their offensive line enough to overcome the loss of DeMarco Murray? Is the Giants' passing game good enough to overcome issues at other placed on the roster? Will Chip Kelly's serious roster makeover give the Eagles the division title? And can Jay Gruden and Robert Griffin III ever get on the same page? Doug and Greg go under the hood with serious conceptual and schematic discussions.