The Redskins can secure the final NFC Wild Card spot with a home win in Sunday’s regular-season finale.  To do so, they will have to beat the division-champion Dallas Cowboys at FedEx Field.  The ‘Skins defeated the Vikings last Sunday night, 32-21.  The win put the two teams at 8-and-7 and gave the ‘Skins the head-to-head advantage in the event they remain tied.  Meanwhile, the Cowboys improved to 13-and-2 when they beat the Panthers 20-13 Saturday.  The outcome, coupled with Green Bay’s Sunday loss to Chicago, gave Dallas home-field advantage throughout the NFC Playoffs.  The Cowboys will be without star wide out Terrell Owens due to an ankle injury suffered last weekend.