The New Orleans Saints are still unbeaten, but it hasn’t been easy. Hardly anything has been that way for the Dallas Cowboys lately. The Saints look to move closer to clinching the NFC’s top seed Saturday night when they host the Cowboys, who are again struggling in December. New Orleans (13-0) set a franchise record for wins and clinched a first-round bye with a 26-23 victory over Atlanta on Sunday. For the second week in a row, though, its perfect record was in jeopardy late.