Seems by mid-way thru the 4th quarter, he is starting to slightly struggle. I 100% understand why - dude plays full speed all out every single play.
Camera shots show him just gassed. When he is on the bench, he just looks beat and unhappy. Reading his comments tell me he would like to play more LB but he is dedicated to whatever the team needs, which is apparently him playing a DL. Are we seeing the beginning of the Cowboys chewing him up and spitting him out? Wanting 100% of him for 3 or 4 years instead of 90% for 7 or 8 years?
Will he reach a point and think to himself "man, I can't keep this pace and maintain a long healthy career. Maybe I need to look at playing somewhere else."