Young pulled up lame on a bootleg with no one around him, prompting the Eagles' training staff to take action. Third-string quarterback Mike Kafka entered the game and will likely finish it out.
Kafka, for what it's worth, has far outperformed Young thus far in the preseason, but Young is a two-time Pro Bowl quarterback who can create with his legs and his arm, and well, is just an entertaining football player in every regard.
Though he won't return to this game, Young should be fine for Week 1, based on how he's reacting on the sideline:
Young is limping, but talking to Vick. Doesn't look too concerned.