The Dallas Cowboys are gearing up for training camp with a focus on rookies who are expected to make an impact early in the season. Players like Marshawn Kneeland are set to contribute, especially in roles backing up key players like Micah Parsons and DeMarcus Lawrence. The team's roster projection highlights the competition for positions like backup quarterback and running back. Additionally, there are concerns about projected starters like Mazi Smith and Tyler Guyton, prompting discussions about having backup plans in place. Amidst uncertainties, the Cowboys' offensive line, historically strong, faces challenges and transformations, with questions about regaining its former dominance and incorporating rookies for the upcoming season.