Joe Mattern played in the early years of the National Football League (NFL), contributing to the development of professional football in the United States.
He was part of the Cleveland Indians team in 1920, which was one of the original teams in the NFL.
Mattern's career spanned a formative period in the league's history, showcasing the transition from early amateur play to organized professional competition.
While Joe Mattern may not be widely recognized today, his participation in the NFL's early days places him among the pioneers of the sport.
Source: gpt-4o-mini
130, , 1892-09-09, Joe Mattern, Joseph, Mattern
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