Rivals Dallas and Washington have played each other in season openers nine times. The Cowboys are 6-2-1 in those games.
The Cowboys have won most of the games against the Steelers.
The only reason I have ever heard is that the skins didn't want the cowboys in pro football. Somehow, the cowboys owner obtained the rights to the redskins "Hail to the Redskins" fight song and used it as ransom for the skins to agree to play them in pro ball. Don't take this as fact, though... do some more research.
The NFC East includes the Dallas Cowboys, New York Giants, Philadelphia Eagles, and the Washing Redskins. The Cowboys have won 5 Super Bowls. The Giants and Redskins have won 3 each. The Eagles have not won a Super bowl yet.
Dallas Cowboys and Buffalo Bills in Super Bowls XXVII and XXVIII. The Cowboys won both games.
The Redskins record against the Giants all time is 62-93-4. This gives the Giants the lead with 93 wins over the Redskins. The Redskins have only defeated the Giants 62 times and the teams have tied 4 times. Sports Media 101 sportsmedia101.com
In 2012, the Redskins and Eagles play each other on November 18th and December 23rd.
With communication saddlelights
The Pittsburgh Steelers have won 6, the 49ers and Cowboys each have 5, followed by the Redskins, Giants, Packers, Patriots and Raiders who have all won 3 each.
The last time that Dallas and Washington met on Thanksgiving Day was on November 24, 2016. The Cowboys outlasted the Redskins, 31-26. Dallas' rookie quarterback Dak Prescott threw a touchdown pass to wide receiver Terrance Williams and scored a rushing touchdown himself. Rookie running back Ezekiel Elliott scored two rushing touchdown's in the Cowboys' team-record 10th consecutive victory.Dallas and Washington have played each other eight times on Thankgiving, with the Cowboys winning seven of the contests.
11 times - the Titans have a 6-5 record against the Redskins.