JaCorey Shepherd injury proving Cary Williams' point?

Eagles head coach Chip Kelly. (Yong Kim/Staff Photographer)THE MOST interesting charge leveled at Chip Kelly this offseason had nothing to do with race. That honor belongs to former Eagle Cary Williams' suggestion that he and his teammates were "exhausted" toward the end of the year due to the coach's unapologetically intense practices.

Whether or not Williams' summation is accurate, it is worth mentioning in connection with something that happened midway through yesterday's open practice at Lincoln Financial Field. At the end of a nifty catch-and-run, running back Darren Sproles collided with JaCorey Shepherd, knocking the cornerback awkwardly to the turf, where he remained for several…