The Browns
The Cowboys and the 49ers can never play in the Super Bowl because they are both in the National Football Conference. The Super Bowl is between NFC teams and American Football Conference teams.
NFL Football
there was no super bowl in 1957 & the lions have never been in a super bowl.
American Football.
No, the Super Bowl pits the champion of the American Football Conference against the champion of the National Football Conference. Since both the Chiefs and Texans play in the American Football Conference, it would not be possible for them to meet in the Super Bowl.
The New Orleans Saints won the Super Bowl in 2010.
The San Francisco 49ers.
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Chicago bears
The Green Bay Packers won Super Bowl 1. The American Football League merged with the National Football League and the Super Bowl was designed to be the final game each year between each conference.
No, Joe Namath did not win 3 Super Bowl MVP awards. He won one MVP award. He was named the MVP for Super Bowl III. That was the only Super Bowl he appeared in.