He struggled , as did most of our cornerbacks , when the team move to the Cover 2 scheme .
Carr 's best play came early on when the Cowboys still played Rob Ryan 's 3 - 4 scheme on defense .
Carr struggled , as did most of our cornerbacks , when the team move to the Cover 2 scheme .
Carr 's best play came early on when the Cowboys still played Rob Ryan 's 3 - 4 scheme on defense .