On September 30, 1923, the Canton Bulldogs won their first game on the way to an 11-0-1 season their second NFL Championship in a row (21-0-3 record from 1922-1923). From the article:
"The Canton Bulldogs were a professional American football team, based in Canton, Ohio. They played in the Ohio League from 1903 to 1906 and 1911 to 1919, and the American Professional Football Association (later renamed the National Football League (NFL) in 1922), from 1920 to 1923 and again from 1925 to 1926. The Bulldogs would go on to win the 1917, 1918 and 1919 Ohio League championships. They were the NFL champions in 1922 and 1923. In 1921–1923, the Bulldogs played 25 straight games without a defeat (including 3 ties), which as of 2018 remains an NFL record. As a result of the Bulldogs' early success along with the league being founded in the city, the Pro Football Hall of Fame is located in Canton. Jim Thorpe, the Olympian and renowned all-around athlete, was Canton's most-recognized player in the pre-NFL era.[1]...
National Football League (NFL)
While the Bulldogs were selling out stadiums and promoting professional football in America, many teams were in serious financial trouble. These teams, who were trying to compete with the Bulldogs, were spending more money than they could afford and were stealing players from one another, which drove salaries even higher. In 1920 at Hay's auto showroom, known for Hupmobiles, the American Professional Football Association was organized. As the best-known personality in football, Thorpe was named the APFA's first permanent president. After scheduling a showcase game between Canton and the Buffalo All-Americans in New York City in December 1920, Thorpe left the Bulldogs at the end of the 1920 season.[17]
In the APFA, the Bulldogs found the competition somewhat tougher than expected. Canton had a respectable 9–5–4 record over the next two seasons. The APFA became the National Football League in 1922 and Hay hired Guy Chamberlin as Canton's player-coach. Chamberlin rebuilt the Bulldogs into a championship team. He kept just five players from the 1921 squad. As a player Chamberlin led his team past the Chicago Cardinals in 1922 by blocking a punt that set up a touchdown, and running back two interceptions for touchdowns to beat the Cards' 20–3.[18] The Bulldogs went on to win back-to-back NFL championships in 1922 and 1923.
However, Canton suffered several setbacks in 1923. First Hay announced that he was stepping down as the team's manager. His asking price for the team was $1,500, which was decided to be about $500 more than the 1922 champions were worth. Things were still up in the air when Hay and Chamberlin left for Chicago to represent the Bulldogs at the league's summer meeting. When Ralph Hay returned to Canton, he sold the Bulldogs on a group of local businessmen who formed the Canton Athletic Company to run the team. Chamberlin stayed on as coach, assuring the team of success on the field. Success at the gate was not nearly so likely.[19]"