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

Single-Season Leaders (Losses)

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.	Joss, Addie	(dunroche)	Detroit Tigers	30
2.	McLain, Denny	(dunroche)	Chenango Wolves	30
3.	Sutton, Don	(filler8)	Saskatchewan Macho Mallards	30
4.	Hamels, Cole	(filler)	Springer Wolves	29
5.	Koufax, Sandy	(dunroche)	Chenango Wolves	29
6.	McGinnity, Joe	(filler)	Treasure Island ROBBERS	29
7.	Hershiser, Orel	(Bravesman)	Shreveport Sharks	29
8.	Sabathia, CC		Florida Gators	29
9.	Drysdale, Don	(Caphowdy504)	Algiers Point Poo Flingers	29
10.	Andujar, Joaquin	(filler)	Punxsutawney Two Seamers	29
11.	Plesac, Zach	(hanson)	Oconee Riverdawgs	29
12.	Pfiester, Jack	(idesofmarch)	Chisholm Trail Drovers	28
13.	Bender, Chief	(filler8)	Hitless Wonders	28
14.	Chance, Dean	(dynasty)	JACKSONVILLE JACKS	28
15.	Newcombe, Don	(filler)	Chicago Cougars	28
16.	White, Doc	(filler)	ARKANSAS CLUBBERS	28
17.	Chesbro, Jack	(dynasty)	new jersey bandits	28
18.	Cicotte, Eddie		Nakatomi Die Hards	28
19.	Joss, Addie	(JohnHeidy)	High Desert Route 666ers	28
20.	Sutton, Don	(DLJONES)	LITTLE ROCK RAZORBACKS	28
21.	Lyons, Ted		Butte Pirates	28
22.	Ford, Whitey		Chicago Bears	28
23.	White, Doc	(filler)	Chicago Logan Squares	28
24.	Cicotte, Eddie	(filler8)	Toronto Devils	28
25.	Sweeney, Charlie	(mdsyverson)	Saskatchewan Saskatoons	28
26.	Saberhagen, Bret	(Batista)	Chenango Wolves	28
27.	McLain, Denny	(dunroche)	Tuvalu Copras	28
28.	Perez, Pascual	(ElBombo)	Raleigh Oaks	28
29.	Moyer, Jamie	(whtsittou83)	Changwon H1-Key	28
30.	Hunter, Catfish	(filler)	MALIBU SURFERS	28
31.	Shields, James		Schvitz Sweatmen	28
32.	Swindell, Greg	(dynasty)	Denver Reds	28
33.	Hendrix, Claude	(dynasty)	Seattle Pilots	28
34.	Pfiester, Jack	(dynasty)	Seattle Pilots	28
35.	Blyleven, Bert	(filler)	Houston Wolves	28
36.	White, Doc	(mrice13)	Harrisburg Cougars	28
37.	McGinnity, Joe	(filler8)	Halifax Hackers	28
38.	Drysdale, Don		Mighty Mites	28
39.	Halladay, Roy	(filler)	South Dakota Kitsune	28
40.	Krukow, Mike	(filler)	Kenora Thistles	28
41.	Sanderson, Scott		Long beach Devils	27
42.	Johnson, Si	(dynasty)	Pensacola A's	27
43.	Shields, James	(dynasty)	Canton Braves	27
44.	Anderson, Tyler	(filler8)	Santo Domingo Bourni Bombers	27
45.	Drabek, Doug	(filler)	ARKANSAS DIAMONDS	27
46.	Drabek, Doug	(dynasty)	Fillmore Warriors	27
47.	Iwakuma, Hisashi	(Luccy8)	Cronx Dicers 🎲	27
48.	Feller, Bob	(filler)	El Paso Diablos	27
49.	Wood, Wilbur	(dynasty)	Chicago Jets	27
50.	Andujar, Joaquin	(Sabotage)	Boston Pugs	27