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Single-Season Leaders & Records for Earned Runs

Photo of John Coleman Photo of Ted Breitenstein Photo of Red Donahue Photo of Al Mays Photo of Kid Carsey Photo of Gus Weyhing Photo of Henry Porter Photo of Matt Kilroy Photo of Tony Mullane Photo of Ed Seward Photo of Kid Nichols+ Photo of Old Hoss Radbourn+ Photo of Stump Weidman Photo of Pink Hawley Photo of Toad Ramsey Photo of Ted Breitenstein Photo of George Cobb Photo of Billy Crowell Photo of Phenomenal Smith Photo of Mark Baldwin

+ - Indicates Hall of Famer. Bold indicates active player.

Statistic Description: Earned Runs Allowed

Only players who finished in the top 40 for the majors in a season will appear on this list.
Leaders from the current season are only included for rate stats after July 1st.

Note that seasons prior to 1876 are not included in single-season marks, but are included in career marks.