Forget that he leads the NFL in rushing by nearly 100 yards more than Arian Foster. Forget that he has the highest yards-per-carry average (5.1) than any running back with at least 75 carries. LeSean McCoy in his fifth season is bringing more to the Eagles’ offense than just massive rushing yards and perpetual movement of the chains. When head coach Chip Kelly talks about what he’s learned about his starting running back after his first nine months on the job he doesn’t salivate over McCoy’s jaw-dropping jukes and Barry Sanders-like jitters. “Did I know how talented he was? The one thing I've been really impressed with LeSean is that he's a complete running back” Kelly said. “I think you look at him in blitz pickup and some things that go a little bit unnoticed … the Giants brought a couple blitzes (two Sundays ago) and just he stepped up and stoned the linebacker in the hole.” McCoy is the centerpiece of an offense that he’s wanted to be since his Pitt days a role he couldn’t occupy in Andy Reid’s pass-first scheme that limited his carries and tended to ignore whenever the Eagles ever fell behind. Under Kelly the Eagles’ offense isn’t just balanced but also unconventional. Kelly isn’t afraid to run on 3rd-and-long. Likewise with more teams passing on 3rd-and-short Kelly still dials up McCoy’s number on those downs. “In this offense it’s definitely different. Just the schemes” McCoy said. “On one play there could be so many different options if we’re throwing the ball running the ball if the running back is running it or the quarterback. There are so many different reads.” Kelly’s read-option schemes can’t function correctly if there’s no guesswork for the defense. He needs McCoy on the field to show run even if the play eventually becomes a pass. That’s where McCoy’s ability to recognize blitzes and chip edge rushers come in handy.