Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.

Single-Season Leaders (ERA)

PICK NEW STAT

Average OBP SLG OPS At Bats Runs Hits Doubles Triples Homers RBIs Walks Strikeouts Stolen Bases Caught Stealing Sac Hits Sac Fly HBP GIDP D+/- Wins Losses ERA WHIP Innings Hits Allowed HR Allowed Walks (P) Strikeouts (p) Complete Games Saves Blown Saves Shutouts Quality Starts Wild Pitches Hit Batters H/9 BB/9 SO/9

1.	Adams, Mike	(RichieBlondet)	West Side Whizzers	0.27
2.	Jansen, Kenley	(morangslick)	Chicago Reapers	0.28
3.	Benitez, Armando	(Noleary)	Baltimore Monumentals	0.52
4.	Schiraldi, Calvin	(Malone824)	Bluff City Eagles	0.57
5.	Jackson, Mike	(nmiller4)	Cincinnati Reds	0.57
6.	Nathan, Joe	(Mortamar1966)	Morleyville Mud Skippers	0.58
7.	Eichhorn, Mark	(chaaad)	Newark Eagles	0.59
8.	Rivera, Mariano	(chunkyschumps)	Raging Roiders	0.60
9.	Adams, Mike	(nycubsfan)	Jackson Heights Knights	0.63
10.	Uehara, Koji	(ranger)	DEER PARK DEER	0.63
11.	McGraw, Tug	(rowdy1982)	Seven of Nine	0.64
12.	Chapman, Aroldis	(Artinshki)	Base Ball Classics	0.65
13.	Jansen, Kenley	(metfan1)	Bartonsville Pumas	0.65
14.	Papelbon, Jonathan	(ThEiRoNhOrSe04)	Liberty Banditos 57	0.68
15.	Abernathy, Ted		New Brunswick Zebras	0.68
16.	Street, Huston	(Artinshki)	Base Ball Classics	0.68
17.	Davis, Wade	(Malone824)	Alton Cavemen	0.69
18.	Kelley, Shawn	(Evilpuppy56)	Beastie Boys	0.70
19.	Adams, Mike	(dynasty)	Forest City Owls	0.71
20.	Alvarado, Jose	(dynasty8)	Boston Bees	0.71
21.	Chapman, Aroldis	(Artinshki)	Base Ball Classics	0.72
22.	Eckersley, Dennis	(jrobandsteal)	Boston Bees	0.72
23.	Feliz, Neftali	(ranger)	J'VILLE JETS	0.73
24.	Howe, Steve	(Bsinco)	H Town H's	0.72
25.	Wilhelm, Hoyt	(liddlefeat)	Raritan Retrievers	0.73
26.	Eckersley, Dennis	(Trulaia)	Vermont Lake Monsters	0.73
27.	Uehara, Koji	(dunroche)	Tuvalu Copras	0.74
28.	Broxton, Jonathan	(Roots)	Brooklyn Dodgers	0.75
29.	Hall, Dick	(babyave1)	Loudoun Lassos	0.75
30.	Benitez, Armando	(757Moose)	Back in the day Brawlers	0.75
31.	Iglesias, Raisel	(coachmcs)	Death Valley Devils	0.76
32.	Harris, Will	(jeter0296)	Staten Island Yankees	0.77
33.	Montgomery, Jeff	(johnmardis)	Warner Town Animaniacs	0.78
34.	Papelbon, Jonathan	(RichieBlondet)	Brooklyn Boppers	0.78
35.	Adams, Mike	(infmusxp)	Roided Up Crazies	0.78
36.	Gagne, Eric	(Mrploppie)	Danville Duds	0.81
37.	Holland, Greg	(michelb3514)	Iowa Corn Pickers	0.81
38.	Eichhorn, Mark	(johnmardis)	Warner Town Animaniacs	0.81
39.	Uehara, Koji	(Talon92tsi)	Really Mean Hamsters	0.81
40.	Zimmerman, Jeff	(filler)	WF Greyhounds	0.82
41.	Fromme, Art	(filler)	Wild Cats	0.82
42.	Capps, Carter	(chaaad)	Bartons Nighthawks	0.81
43.	Melancon, Mark	(Trulaia)	Chapecó Panther	0.82
44.	Valverde, Jose	(heheman69)	Baltimore Orioles	0.83
45.	Foulke, Keith	(sgt714)	Boston Red Sox	0.83
46.	Giles, Ken	(LDJS1947)	MISSOURI MONARCHS	0.83
47.	Gallegos, Giovanny	(hanson)	Arizona Aces	0.83
48.	Benitez, Armando	(filler)	62 Archers of Love	0.84
49.	McCool, Billy	(peteym17)	Potomac Pirates	0.84
50.	Kimbrel, Craig	(nycubsfan)	Klein Bearkats	0.84