Ertz played 40.5 percent of the snaps as a rookie in 2013 and only progressed to 50.3 percent last year. Too often he was watching from the sideline as superior blocker Brent Celek held the edge in Chip Kelly's scheme. Celek returns for his ninth season in Philly, but Ertz is expected to surpass him on the back of improvement in the blocking department. We know the Eagles need him on the field as a receiver now that Jeremy Maclin is gone -- especially in red zone. Ertz will break out if he gets roughly 75 percent of the snaps.