The Better QB: Who's the Best Backup for Brock Purdy?

Trey Lance is less part of that equation. It doesn't seem like his skill or his or parsing each of his practices has anything to do with that decision. You don't want an inexperienced quarterback backing up in an experienced quarterback. But you want to quarterback them on the same system. Mac Jones might be it, but I don't know if he's a good enough backup for Brock Purdy. And now Brian Mackenzie can save him? Who knows? The Eagles got back a first round pick and a third draft pick when they signed Carson Wentz.