The first-place Cowboys will host the third-place Redskins this week in a critical NFC East matchup at Texas Stadium.  The Cowboys are 8-and-1 and hold a two-game lead in the division over the Giants.  Dallas beat New York 31-20 last Sunday.  Tony Romo threw for 247 yards and four touchdowns for Dallas.  The Cowboys come in averaging just under 32 points and 400 yards per game.  The Redskins suffered a heartbreaking 33-25 loss to the Philadelphia Eagles in Week 10.  Jason Campbell threw a career-high three touchdowns, but the Redskins faltered down the stretch and dipped to 5-and-4 with the setback.  Clinton Portis has rushed for 333 yards in Washington’s last two games.  The two teams split the season series last year, with each team winning at home.