1. Michael Gallup and Jalen Tolbert fail to impress
The Cowboys typically have a reason for going out and making a big splash. The same can be said regarding their move to bring in Brandin Cooks.
After the injury to Michael Gallup and Jalen Tolbert's inability to get on the field, the team was forced to do something and is now hoping that either one of them is able to produce consistently as their third receiver. Gallup's health following a minor offseason procedure, and Tolbert's grasp of the playbook are going to be two major factors in how this offense performs this season.
It's been proven that having a reliable third option in the passing game is crucial to the success of offenses, Gallup and Tolbert failing to emerge as that guy will hinder Dak Prescott and put pressure on a running game that will be leaning on Tony Pollard for the first time in his career.