1925 Chicago Cardinals season

Playing all of their games in the city of Chicago, the team finished with a record of 12–2–1, tops in the league in terms of winning percentage.

The Pottsville Maroons, who defeated the Cardinals in league play, were ostensibly the champions of 1925, but their title was stripped when the team was suspended from the NFL in December.

When NFL president Joe Carr learned high school players had been used in a league game, he told reporters the 59–0 Cardinals win would be stricken from the record.

In December 1925, the Pottsville Maroons had their title removed by the NFL and given to the Cardinals for playing in an unsanctioned game against the Notre Dame All-Stars.

To this day, Pottsville residents and supporters still demand to know why Chicago was awarded the title even though they too were found by Carr to have violated the NFL's rules.

* The Pottsville Maroons were suspended from the league in December, resulting in the Chicago Cardinals being named the NFL champions.