America’s Team had massive hopes ahead of the 2015 season. Most fans agreed that they were desperately lucky to fall out of the playoffs the previous year. They had a great shot of making it through the weak NFC East. But then Tony Romo fractured his collarbone and they started 0-7.
Romo’s injury killed their season because they lost their starting quarterback. That’s not a position that any franchise wants to be in and it hurt the Cowboys badly. Things became even worse for them when Romo refractured his collarbone. It was a miserable year for Dallas and their star (via The Guardian).