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

Single-Season Leaders (WHIP)

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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 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.	Uehara, Koji	(tgbsbl1967)	Washington Senators	0.51
2.	Jansen, Kenley	(rreebe916)	Manchester Marauders	0.52
3.	Doolittle, Sean	(rfb60609)	Siddonsburg Superdupers	0.53
4.	Chapman, Aroldis	(dunroche)	Washington Racin' Rebels	0.54
5.	Saito, Takashi	(paranoid)	Las Vegas Pit Bosses	0.55
6.	Marmol, Carlos	(Caphowdy504)	Springfield Troy McClures	0.57
7.	Chapman, Aroldis	(nycubsfan)	Htown Skeeters	0.57
8.	Wagner, Billy	(TIGER123)	Iowa Corn Pickers	0.57
9.	Adams, Mike	(noahis2cul4u)	Chicago Outfit	0.57
10.	Rivera, Mariano	(paranoid)	Las Vegas Scorpions	0.58
11.	Robertson, David	(shelley71)	Charleston Muff Destroyers	0.58
12.	Soriano, Rafael	(filler8)	Las Vegas Lucky 7's	0.58
13.	Uehara, Koji	(filler8)	Rochester RHINO	0.59
14.	Kimbrel, Craig	(Elitepro77)	South Dakota Cyclones	0.60
15.	Jackson, Mike	(shelley71)	Burma Harry Butz	0.60
16.	Feliz, Neftali	(paranoid)	Las Vegas Silver Knights	0.60
17.	Gagne, Eric	(bdavids28)	Silver Jet	0.60
18.	Adams, Mike	(paranoid)	The Meadows CaballerosDeOro	0.60
19.	Kimbrel, Craig	(mattholland1975)	Clearwater Crocs	0.60
20.	Adams, Mike	(dynasty)	Iowa Corn Pickers	0.61
21.	Kimbrel, Craig	(paranoid)	Las Vegas Flying Elvi	0.61
22.	Rivera, Mariano	(Mrploppie)	Oakmont Hopefuls	0.61
23.	Groom, Buddy	(tgbsbl1967)	Historic Grays	0.61
24.	Doolittle, Sean	(jrobandsteal)	Jackson Jays	0.61
25.	Smoltz, John	(P-ItsBones)	Honolulu Sharks	0.61
26.	Henke, Tom	(gibblets1973)	Torbay Tides	0.61
27.	Adams, Mike	(filler8)	Forest City Owls	0.61
28.	Adams, Mike	(bostontex24)	Boston Commons	0.62
29.	Wagner, Billy	(Abcjz)	Tottenville Pirates	0.62
30.	Gagne, Eric	(Crackpot)	Boston Muff Pounders	0.62
31.	Kimbrel, Craig	(MikeDrop0221)	Macon Apes	0.62
32.	Hader, Josh	(Snowman33)	Sun City Islanders	0.62
33.	Gagne, Eric		Dot Com	0.62
34.	Feliz, Neftali		Lake Havasu Rain-11	0.62
35.	Graveman, Kendall	(Relvinmelvin)	Brown Ball Bigwelds	0.62
36.	McGraw, Tug	(rowdy1982)	Team Seven	0.63
37.	Adams, Mike	(gibblets1973)	Mount Pearl Marauders	0.63
38.	Balfour, Grant	(cjay1444)	Chittenango Bears	0.63
39.	Eckersley, Dennis	(jericho2u)	Dixie Boy Happy Toyz	0.63
40.	Doolittle, Sean	(maverck11)	West Park Panthers	0.63
41.	Giles, Ken	(tgbsbl1967)	Minot Minotaurs	0.63
42.	Uehara, Koji	(mattholland1975)	Homestead Smokestacks	0.63
43.	Sewald, Paul	(cmabud)	Laredo Lemurs	0.63
44.	Street, Huston	(richp)	Wandering Wolverines	0.63
45.	Doolittle, Sean	(nycubsfan)	NY Rangers	0.63
46.	Jackson, Mike	(rreebe916)	Manchester Marauders	0.63
47.	Adams, Mike	(nycubsfan)	JACKSON HEIGHTS SHARKS	0.63
48.	Wilhelm, Hoyt	(liddlefeat)	Raritan Retrievers	0.63
49.	Chapman, Aroldis	(chaaad)	New York Bluebirds	0.64
50.	Doolittle, Sean	(filler2)	Chenango Wolves	0.64