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The original was posted on /r/nfl by /u/Rust2 on 2025-04-02 01:42:00+00:00.

In 1948, the Browns became the first professional football team to complete an entire season undefeated and untied — 24 years before the 1972 Miami Dolphins of the NFL would accomplish the task, but this feat was not recognized by NFL record books until today.