During the 2011 National Football League season, the Dallas Cowboys defeated the Washington Redskins (twice), the San Francisco 49ers, the St. Louis Rams, the Seattle Seahawks, the Buffalo Bills, the Miami Dolphins and the Tampa Bay Buccaneers.
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The Dallas Cowboys won only one game in 1989, beating the Washington Redskins 13-3
The Miami Dolphins in '72, the Denver Broncos in '78, the Buffalo Bills in '93 and '94, and the Pittsburgh Steelers in '96.