ARLINGTON, Texas – Antonio Gibson ran for three touchdowns, Alex Smith had a scoring pass and Washington at least temporarily moved into first place in the woeful NFC East with a 41-16 Thanksgiving victory over the Dallas Cowboys on Thursday.Gibson's second score was a 23-yard run on the first play after an ill-advised fake punt attempt by Dallas as Washington beat its division rival on Thanksgiving for just the second time in 10 tries, the most frequent visitor for the Cowboys in their annual holiday home game.Washington (4-7) slides ahead of Philadelphia (3-6-1) in the NFC East and will stay in first place if the Eagles lose to Seattle on Monday night.