If Nick Sirianni could throw the red challenge flag during a practice, he would have, if only to see the slow-motion replay for himself.Watching his team work on a sunny Labor Day afternoon, Sirianni was reminded of some great news: Saquon Barkley is a .He made a run at practice yesterday, Sirianni said, and I just remember I was wearing sungla ses, it was sunny out, just kind of taking Eric...