For single seasons, From 1871 to 2015, Younger than 23, Hall Of Fame Members (as mlb players), Played 50% of games at C, 1B, 2B, 3B, SS, LF, CF, RF, DH or PHR, (requiring WAR_bat≤0, onbase_plus_slugging_plus≥0 and At least 300 plate appearances), so

generated by a site user

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User's Notes:
Worst seasons by a future Hall of Famer (age 23 and younger)
Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 7/20/2015.

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