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

Single-Season Leaders (Losses)

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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.	Abreu, Jose	(mintwinsfan)	Lake Mills Bulldogs
2.	Altuve, Jose	(jbenson)	Iowa Southpaws
3.	Andrus, Elvis	(jbenson)	Iowa Southpaws
4.	Arenado, Nolan	(HomerAtBat)	O'Fallon Carpetbaggers
5.	Bautista, Jose		Valley Falls Fencebusters
6.	Beltre, Adrian	(eugene)	Wakanda Black Panthers
7.	Betts, Mookie	(eugene)	Wakanda Black Panthers
8.	Bogaerts, Xander	(Bosocks2013)	Gloucester Ringers
9.	Bruce, Jay	(Frug)	Los Angeles Sharks
10.	Bryant, Kris	(Yash11111)	Texas Studs 1-895
11.	Cabrera, Melky	(mintwinsfan)	Lake Mills Bulldogs
12.	Calhoun, Kole	(RicksRookies)	Ricks Rookies
13.	Carpenter, Matt		Valley Falls Fencebusters
14.	Carter, Chris	(HomerAtBat)	O'Fallon Carpetbaggers
15.	Castellanos, Nick	(Jsuer1971)	Ruhengeri Rhinos
16.	Castillo, Welington	(Yash11111)	Texas Studs 1-895
17.	Castro, Starlin	(Yash11111)	Texas Studs 1-895
18.	Cespedes, Yoenis		Valley Falls Fencebusters
19.	Crawford, Brandon	(eugene)	Wakanda Black Panthers
20.	Dahl, David	(WindowsWhiz)	El Paso Toros
21.	Davis, Chris	(WindowsWhiz)	El Paso Toros
22.	Davis, Rajai	(jbenson)	Iowa Southpaws
23.	Desmond, Ian	(Yash11111)	Texas Studs 1-895
24.	Dozier, Brian	(Jsuer1971)	Ruhengeri Rhinos
25.	Duvall, Adam	(Alex1962)	South Denver Snow
26.	Eaton, Adam	(eugene)	Wakanda Black Panthers
27.	Encarnacion, Edwin	(jbenson)	Iowa Southpaws
28.	Escobar, Alcides	(mintwinsfan)	Lake Mills Bulldogs
29.	Franco, Maikel	(RicksRookies)	Ricks Rookies
30.	Frazier, Todd	(RicksRookies)	Ricks Rookies
31.	Freeman, Freddie	(mintwinsfan)	Lake Mills Bulldogs
32.	Gardner, Brett	(Bosocks2013)	Gloucester Ringers
33.	Goldschmidt, Paul		Valley Falls Fencebusters
34.	Gonzalez, Carlos	(HomerAtBat)	O'Fallon Carpetbaggers
35.	Grandal, Yasmani	(RicksRookies)	Ricks Rookies
36.	Gregorius, Didi	(Jsuer1971)	Ruhengeri Rhinos
37.	Hamilton, Billy	(Jsuer1971)	Ruhengeri Rhinos
38.	Healy, Ryon	(WindowsWhiz)	El Paso Toros
39.	Hernandez, Cesar	(HomerAtBat)	O'Fallon Carpetbaggers
40.	Herrera, Odubel	(Yash11111)	Texas Studs 1-895
41.	Hosmer, Eric	(Alex1962)	South Denver Snow
42.	Inciarte, Ender	(RicksRookies)	Ricks Rookies
43.	Kemp, Matt	(Alex1962)	South Denver Snow
44.	Kinsler, Ian	(Bosocks2013)	Gloucester Ringers
45.	Kipnis, Jason	(Frug)	Los Angeles Sharks
46.	LeMahieu, DJ	(RicksRookies)	Ricks Rookies
47.	Leon, Sandy		Valley Falls Fencebusters
48.	Lindor, Francisco	(Alex1962)	South Denver Snow
49.	Longoria, Evan	(HomerAtBat)	O'Fallon Carpetbaggers
50.	Lucroy, Jonathan	(Alex1962)	South Denver Snow