As the Cowboys just wrapped up their first of three OTA sessions, fans finally got a glimpse of some on-field action. With so many intriguing story lines out there, the craving for details is almost uncontrollable. There should be some sort of Cowboys junkie rehabilitation clinic to help you get your fix. Oh wait, you’re on it right now. As we debate over which players will have what type of impact, there are some guys who will enter the new season with a lot to prove. Maybe they are in a contract year? Or maybe they are returning from an injury?