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A wild finish helps the Cowboys end their skid, the Chiefs get another win in nail-biting fashion, the Packers get revenge in a divisional playoff rematch, the Eagles add to their lead in the NFC East, the Cavaliers remain undefeated at home, the Celtics get a down-to-the-wire win over Minnesota, and another NHL team makes a mid-season coaching change. Correspondent Steve Carney reports.