MLB Single-Season (Post 1900) Pitching Leaders - Earned Run Average
PLAYERYRGGSCGSHIPHERBBSOWLSVERA
451Jeff Pfeffer19173030243266.02256666115111502.23
 Ed Reulbach19153330234270.02336769117211012.23
 Bill Bevens19463131183249.22136278120161302.23
454Hooks Wiltse19084438307330.02668273118231422.24
 Sherry Smith19193019132173.018143294071212.24
 Ed Summers19093532243281.2243705210719912.24
 Harry Brecheen19483330217233.1193584914920712.24
 Vean Gregg19134434233285.225871124166201332.24
 Vic Willis19093935244289.2243728395221112.24
 George Kaiserling19154129165261.1246657375151522.24
PLAYERYRGGSCGSHIPHERBBSOWLSVERA
 Nap Rucker19093833286309.124577101201131912.24
 Tom Walker19042424222217.019654536415802.24
 Babe Adams19103430163245.0217616010118902.24
 Randy Jones19753736186285.02427156103201202.24
 Chris Carpenter2009282831192.2156483814417402.24
 Lew Richie1909331492176.21584462538832.24
 Elmer Riddle19413322154216.218054598019412.24
468George Mullin19034136316320.228480106170191522.25
 Atlee Hammaker1983232383172.1147433212710902.25
 Bill Duggleby19064230225280.1241706683131922.25
PLAYERYRGGSCGSHIPHERBBSOWLSVERA
 Sam Jones19182421165184.015146704416502.25
 Joe McGinnity19064537323339.23168571105271222.25
 Gus Bell19073527203263.222266778881612.25
 Earl Moore19042624221227.21865761139121102.25
 Johnny Cueto2014343442243.2169616524220902.25
 Eddie Plank19062625215211.2173535110819602.25
477Joe Benz19144835164283.12457166142141922.26
 Bill Walker19313728196239.1212606412116932.26
 Tex Hughson19442823192203.1172514111218552.26
 Rankin Johnson19143227164219.1180556384131402.26
PLAYERYRGGSCGSHIPHERBBSOWLSVERA
 Orel Hershiser19883534158267.0208677317823812.26
 Pedro Martinez2002303020199.1144504023920402.26
 Bill Dinneen19033734326299.02557566148211322.26
 Doc White19074635246291.02707338141271312.26
 Cy Young19093534303295.02677459109191502.26
 Eddie Plank19054141354346.22878775210241202.26
 Christy Mathewson19034542373366.132192100267301322.26
 Ray Washburn1968313084215.0191544712414802.26
 Jimmy Ring19193218122183.015046516110932.26
 Chief Bender19142823147179.0159455510717322.26
PLAYERYRGGSCGSHIPHERBBSOWLSVERA
 Hank Robinson19123316110175.014644307912722.26
 Erv Kantlehner19152918101163.013541586451232.26
 Wheezer Dell1916321692155.01433943768912.26
 Jake Weimer19053330262250.12126380107181212.26
495Jon Matlack19783533182270.02526851157151312.27
 Willie Sudhoff19033835305293.22627456104211502.27
 Chick Fraser19082617112162.214141616611922.27
 Ed Killian19053937338313.126379102110231402.27
 Al Orth19013533306281.2250713292201212.27
 Tiny Bonham19422827226226.019957247121502.27

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