<page_title> List of Major League Baseball annual ERA leaders </page_title> <section_title> National League </section_title> <table> <cell> 1880 <col_header> Year </col_header> </cell> <cell> Tim Keefe† <col_header> Leader </col_header> </cell> <cell> 0.86 <col_header> ERA </col_header> </cell> <cell> Troy Trojans <col_header> Team </col_header> </cell> </table>
The lowest ERA in league history was posted by Tim Keefe, with 0.86 ERA for the Troy Trojans in 1880.