By RICK HERRIN LANDOVER, Md. — The Cowboys’ chances of a milestone-setting performance froze Sunday at FedEx Field. Dallas was denied a possible franchise-record 14th victory. Tight end Jason Witten didn’t get the catches needed to hit 100, and running back Marion Barber was stuffed in his attempt to hit 1,000 yards. The only milestone the Cowboys reached was one by quarterback Tony Romo. He …
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