Dallas Cowboys GM Jerry Jones is trimming the edges...as he fires Defensive coordinator Rob Ryan...

The Cowboys have fired defensive coordinator Rob Ryan, according to multiple reports.Rob Ryan took the job in 2011, after being fired by the Browns.

Cowboys owner Jerry Jones has vowed that changes are coming to the franchise.  He also has lamented the absence of fundamentals, like solid and basic tackling skills.

Let's see what other changes are made in Dallas in the future.