There could be similarities between the 2013 Green Bay Packers, and the 2015 Dallas Cowboys.
Both teams lost Pro Bowl passers to fractured collarbones, and both teams then had to sift through the quarterback free agency market, which is always a vast collection of smouldering rubble. When the Packers lost Aaron Rodgers to his fractured clavicle in 2013, a 33-year-old Seneca Wallace was his immediate replacement.
The task ahead was the same as it is now for the Tony Romo-less Cowboys: Play merely average football to stay atop a crumbling division until the regular starter retakes his rightful throne.