There is a reason why many NFL teams avoid full, live tackling in training camp practices. The Eagles got a vivid reminder of that Friday, when tight end Zach Ertz and wide receiver Jordan Matthews had to leave the field after scary-looking low hits from a pair of rookie defensive backs, Blake Countess and Jalen Mills, respectively.
Initially, Eagles coach Doug Pederson, an enthusiastic proponent of tackling in practice, said Ertz was being evaluated for a concussion, Matthews for a left knee injury, but within minutes, word came down that Ertz had been cleared and that Matthews wasn't seriously hurt.