An all-New York showdown is in store this Sunday when the New York Giants meet the Buffalo Bills at Ralph Wilson Stadium.  Eli Manning was just 18-of-52 for 184 yards and a touchdown as New York fell to the Washington Redskins 22-10 on a blustery Sunday night at Giants Stadium.  Despite the loss, the 9-and-5 Giants hold the top wild card spot in the NFC and still control their own playoff destiny.  New York, which is a robust 6-and-1 on the road this year, can secure its third straight trip to the postseason with a victory or with some help from the Redskins and Saints.  The Bills suffered an 8-0 loss to the Browns during a miserable snowy afternoon in Cleveland last week.  The setback dropped Buffalo to 7-and-7 and out of playoff contention.  The Bills hold a 6-3 all-time edge in the regular-season series between the clubs.