Which sport was NOT enormously popular in the 1920s?

Question

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During the 1920s, professional football had not yet gained the immense popularity that sports like boxing, baseball, and college football enjoyed. Boxing and baseball were among the most followed sports, and college football had a significant following, with its big games often being major events. Professional football, on the other hand, was still in its infancy and would not reach a comparable level of popularity until later in the 20th century.

Which Sport Was NOT Enormously Popular in the 1920s