Hvem har den laveste score i mlb historie?
Tim Keefe
List of Major League Baseball annual ERA leaders
Den laveste ERA for en enkelt sæson i ligaens historie blev præsteret af Tim Keefe, hvis 0,86 ERA i 105 innings for National League's Troy Trojans i 1880 førte sin nærmeste konkurrent med 0,52 runs. I American League er Dutch Leonards 0,96 ERA en enkelt sæsonrekord. Keefe og Leonard er de eneste to pitchere, der nogensinde har tilladt mindre end et run pr. ni kastede innings i en enkelt sæson. Den største sejrsmargin for en ERA-mester er 1,96 runs, som blev opnået, da Martínez' 1,74 ERA førte over Clemens' 3,70 i den amerikanske liga i 2000-sæsonen. Den største sejrsmargin i National League er 1,26 runs - Dazzy Vances 2,61 ERA over Carl Hubbell's 3,87 i 1930. Den mindste sejrsmargin for en ERA-mester er 0,009 runs. Selv om statistikken traditionelt registreres med to decimaler i de fleste kilder, blev titlen i American League i 1988 afgjort med en margin på mindre end en hundrededel af et run, da Allan Andersons ERA på 2,446 (55 fortjente runs i 202 1⁄3 innings) slog Teddy Higueras 2,455 (62 fortjente runs i 227 1⁄3 innings). Andre kampe, der blev afgjort med en hundrededel eller mindre, omfatter Luis Tiants ERA på 1,91 foran Gaylord Perrys 1,92 i 1972 og Mark Fidrych (2,34) over Vida Blue (2,35) i 1976.
Tim Keefe
List of Major League Baseball annual ERA leaders
The lowest single-season ERA in league history was posted by Tim Keefe, whose 0.86 ERA in 105 innings pitched for the National League's Troy Trojans in 1880 led his closest competitor by .52 runs. In the American League, Dutch Leonard's 0.96 ERA is a single-season record. Keefe and Leonard are the only two pitchers ever to allow less than one run per nine innings pitched in a single season. The widest margin of victory for an ERA champion is 1.96 runs, achieved when Martínez' 1.74 ERA led Clemens' 3.70 in the American League during the 2000 season. The largest margin of victory in the National League is 1.26 runs—Dazzy Vance's 2.61 ERA over Carl Hubbell's 3.87 in 1930. The smallest margin of victory for an ERA champion is .009 runs. Although the statistic is traditionally recorded to two decimal places by most sources, the 1988 American League title was decided by a margin of less than one hundredth of a run when Allan Anderson's ERA of 2.446 (55 earned runs in ​202 1⁄3 innings) bested Teddy Higuera's 2.455 mark (62 earned runs in ​227 1⁄3 innings). Other contests decided by one hundredth or less include Luis Tiant's 1.91 ERA ahead of Gaylord Perry's 1.92 in 1972 and Mark Fidrych (2.34) over Vida Blue (2.35) in 1976.
List of Major League Baseball annual ERA leaders