The Eagles' flight plans

IF EAGLES COACH Chip Kelly has his way, Philly's speed-'em-up, spread-'em-out offense will remain a mystery until its Week 1 unveiling Sept. 9 on Monday Night Football. But we asked two ESPN Insiders -- Field Yates, a former scouting intern with the Patriots, and KC Joyner, our resident football scientist -- to peel back the curtain a little early. After studying the tape and crunching the numbers, they offer their sneak peek at what to expect from Kelly's crew in 2013.