Impact of Callahan as play-caller 

June, 4, 2013
6/04/13
2:22
PM ET
The rumored change in the play-calling duties for the Dallas Cowboys has finally come to official fruition: according to Calvin Watkins of ESPNDallas.com, OC Bill Callahan has confirmed that he'll take over calling plays from HC Jason Garrett. So what should we expect?

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