San Francisco & Oakland
New York
All football teams play their home games in the cities that they are assigned by the NFL as they enter into the league when the league expanded (it has expanded several times as new teams come into the league. For a team to move from one city to another requires a 2/3 approval from the other team owners.
The largest sports market in America is the New York City metro area home to 2 NBA teams, 2 NFL teams and 2 NHL teams.
Ted Marchibroda. Same team in different cities - he was the coach of the Baltimore Colts between 1975-1979 and the Indianapolis Colts between 1992-1995. Two NFL teams in the same cities - Baltimore Colts and Baltimore Ravens between 1996-1998.
2 teams
Colts and the Redskins
Florida & ny.
In its current structure, the NFL has 4 Wild Card (non-division winners) teams advance to the Playoffs each year, 2 from the NFC, and 2 from the AFC.
10
24%
Rams and the Lions
Cleveland Browns and hmmm... Jets?
None