The Dallas Cowboys have seen their season come to an end at the hands of the San Francisco 49ers in two straight years. It goes without saying that the boys in blue have something to prove against the red and gold. Entering the new season, both these teams were heralded as two of the teams to beat in the NFL and now they will square off on Sunday night. What should we expect in this one? Here are five things to watch when the Cowboys travel to Santa Clara to play the 49ers.