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

Single-Season Leaders (ERA)

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

1.	Balfour, Grant	(CaliCrossover)	Pillsbury Doughboys	0.00
2.	Britton, Zach	(skieff)	Hustons Mill YardHawks	0.00
3.	Robertson, David		Destin Snowbirds	0.00
4.	Rivera, Mariano	(Consigliere33)	Chicago Cubs	0.00
5.	Buchter, Ryan	(ColinBoucher)	Alpha Bet City 🔤's	0.00
6.	Hand, Brad	(CaliCrossover)	Denver Peaks	0.15
7.	Boxberger, Brad	(Myunclepunk)	Chicago Feens	0.16
8.	Madson, Ryan	(baconfats)	Clubber Langs	0.16
9.	Saito, Takashi	(ScottHouston)	Jakarta Colts	0.16
10.	Lyons, Tyler	(jaredhamann)	Gorilla Harambe	0.18
11.	Jansen, Kenley	(jericho2u)	Honolulu Beavcoons	0.18
12.	Boxberger, Brad	(thunderstruck)	Cape Cod MARINERS	0.20
13.	Carman, Don	(johnmardis)	Ottawa Otters	0.20
14.	Adams, Mike	(Ruthbonds)	Chicago Black Sox	0.21
15.	Broxton, Jonathan	(strutter)	Baseball Furies	0.23
16.	Brewer, Jim	(nytkrew)	Virginia Rebels	0.23
17.	Feliz, Neftali	(Myunclepunk)	Chicago Feens	0.23
18.	Bush, Matt	(hoopdirt)	Almendares Scorpions	0.24
19.	Rodriguez, Francisco	(vaughnk003)	Sparta Warriors	0.24
20.	Hall, Tom	(Gibblets1973)	Los Gibbletos 19inteen	0.24
21.	Howell, Jay	(BaltimoreChop)	Portland Pork Chops	0.25
22.	Street, Huston	(jbiskup50)	MYRTLE BEACH BIGTIMES	0.25
23.	Marshall, Mike	(Grals)	Las Vegas Locusts	0.25
24.	Blanton, Joe	(Joemcg)	OC Hornets	0.26
25.	Street, Huston	(richgibson)	School Workers Organizers	0.26
26.	Wilhelm, Hoyt		Havana Cienfuegos	0.27
27.	Adams, Mike	(gate-mouth)	Humbolt 💰⚾	0.28
28.	Pfiester, Jack	(PARATROOPER22)	DALLAS DRIFTERS	0.28
29.	Marmol, Carlos	(alrosen)	CAPITOL HILL REDSKINS 56	0.28
30.	Kimbrel, Craig	(Dollarhotdog)	Muddville Nine	0.28
31.	Wagner, Billy	(babyave1)	North Bridgton Fins	0.28
32.	Putz, J.J.	(tbone34)	Atlanta Brick Squad	0.29
33.	Gossage, Rich	(dunroche)	Inland Empire 66ers	0.28
34.	Benitez, Armando	(jamin)	Chester Springs Menjai	0.30
35.	Smith, Dave	(dbutts)	Burlington Bees	0.29
36.	Neshek, Pat	(joemcg)	OC Banditos	0.32
37.	Miller, Andrew	(UNHBombers)	Stowe UNH Bombers	0.33
38.	LaRoche, Dave	(baileycjj)	Seattle Pilots	0.34
39.	Vizcaino, Arodys		Las Vegas ASHBA's	0.34
40.	Uehara, Koji		H-Town Colt 45s	0.34
41.	Edwards, Carl	(IceHockey)	Pittsburgh Pirates	0.34
42.	McHugh, Collin	(natinals)	Tampa Arsenal	0.36
43.	Kensing, Logan	(Cdubb7)	Picksburgh Pirates	0.36
44.	Hader, Josh	(chapman)	Jokes On You Fighting Clowns	0.36
45.	Miller, Andrew	(rick104221)	Delta City Gamblers	0.36
46.	Drabowsky, Moe	(stengel28)	Williams Grove Racers	0.36
47.	Miller, Stu	(andyyoung)	New York Knights	0.37
48.	Jansen, Kenley		Sacramento River Cats	0.37
49.	Hoffman, Trevor		12th Man Trouble Makers	0.38
50.	Gagne, Eric	(lvraider)	Gas House Gorillas	0.37