The National Football League (NFL) is the premier professional American football league in the United States, and is also one of the major North American professional sports leagues. However, the NFL is not without its share of controversies. Throughout history, everything from questionable championship rulings to team relocation decisions to allegedly criminal behavior by players has been part of the conversation surrounding the NFL. Many of the recent controversies have surrounded NFL Commissioner Roger Goodell, player conduct, and/or the league's role in player safety.

1925 NFL Championship

The 1925 NFL Championship, officially held by the Chicago Cardinals, has been the subject of controversy since it was awarded. Under the league rules during that time, the NFL title was automatically given to the team with the best record at the end of the season instead of having the winner be determined by a playoff tournament. There was an open-ended schedule during that season; although the final listed league games ended on December 6, teams could still schedule contests against each other through December 20 to make more money.

National Football League controversies

The Pottsville Maroons were one of the dominant teams of the 1925 season, and after defeating the Cardinals on December 6, came away with the best record in the league. However, NFL commissioner Joseph Carr suspended and removed the Maroons from the NFL after they played an unauthorized exhibition game in Philadelphia, on the grounds that they had violated the territorial rights of the Frankford Yellow Jackets. The Cardinals played and won two more games against weak NFL opponents, giving them a superior record, and were awarded the title.

National Football League controversies

Pottsville supporters argue that the suspension was illegitimate, and that the Maroons, who were reinstated the next year, would have had the superior record had they not been suspended. Others claim that Chicago was the legitimate champions based on the rules of the time. The NFL has investigated Pottsville's case on two occasions, both times upholding its decision that the Cardinals are the 1925 champions.

National Football League controversies

Team relocation controversies

An NFL franchise is an asset to both the football fans in a region and the city the franchise represents. Having a team makes a large impact on a city's perceived status, entertainment and social opportunities, and ability to attract new business and corporations looking to establish a national or regional presence. While a team is able to make certain demands for facilities and incentives to remain in or relocate to a city, a city is also able to use the status conferred by the franchise to make itself considerably more attractive to corporations and the individuals who may choose to work there.

Baltimore Colts move to Indianapolis

The Baltimore Colts were moved to Indianapolis by owner Robert Irsay in 1984, after multiple years of lobbying to renovate or replace the decrepit Memorial Stadium, including talks of a "Baltodome". In 1982, the Hoosier Dome (later called the RCA Dome) was built in Indianapolis, increasing interest in a move by the Colts. Eventually, the Colts moved to Indianapolis with the help of the moving company Mayflower Transit, who did so at night to confuse the Maryland State Police and fans.

Cleveland Browns move to Baltimore

Cleveland Browns owner Art Modell decided to move the Browns to Baltimore, 12 years after the Colts moved away from the city. After backlash from the fans, the team and the NFL decided on a special compromise: Modell could relocate the Browns to Baltimore, but would play as an "expansion team", and the Browns would go into a state of "suspended operations". Modell's new team was eventually named the Baltimore Ravens. In 1999, the Cleveland Browns returned to the league as an expansion team. Similar agreements would eventually be used for the Seattle SuperSonics of the NBA in their relocation to Oklahoma City to become the Oklahoma City Thunder, along with the San Jose Earthquakes in their move to become the Houston Dynamo (a new Earthquakes team eventually returned).

St. Louis Rams move to Los Angeles

On April 13, 1995, Stan Kroenke helped Georgia Frontiere move the Los Angeles Rams from Anaheim to St. Louis by purchasing a 30% share of the team.

In April 2010, as a majority stock holder, Kroenke said, "I'm going to attempt to do everything that I can to keep the Rams in St. Louis. Just as I did everything that I could to bring the team to St. Louis in 1995. I believe my actions speak for themselves."

In August 2010, Stan Kroenke purchased the Rams using a right of first refusal clause in the last minute of bidding, beating a high bid from Shahid Khan.