The Redskins return to practice today to start gearing up for Sunday’s showdown with the rival Dallas Cowboys at FedEx Field.  This past Sunday night, the swarming defense held marquee rookie Adrian Peterson of the Minnesota Vikings to just 27 yards rushing.  Now, the “Burgundy and Gold” will try to keep the Cowboys in check.  Dallas will play without wide receiver Terrell Owens, who has a sprained ankle, suffered in last weekend’s win over the Carolina Panthers.  Kickoff in Landover has been pushed back to 4:15 p.m.