Single Season Losses Leaders

Batters: PA AVG H R 2B 3B HR RBI SB OBP SLG OPS BB
Pitchers: ERA W L W% IP SH GS CG WHIP HR/9 SV SV%
Rank Player Year Team W L W-L% ERA G GS GF CG SH SV SV% IP BB SO WHIP BR9 HR9
1 Billy Powell 1949 SSL 12 22 .353 4.78 43 38 5 6 0 0 0 246.2 119 120 1.561 14.05 0.99
2 Robert Evans 1934 BRI 5 21 .192 4.99 45 31 14 4 0 0 0 229 98 83 1.633 14.70 0.67
3 Dazzy Vance 1927 MNL 10 20 .333 3.07 39 34 5 13 3 0 0 272.2 77 175 1.133 10.20 0.40
Lee Meadows 1927 CIR 13 20 .394 3.51 40 40 0 14 0 0 0 297.1 83 77 1.305 11.74 0.54
Warren Spahn 1949 SSL 11 20 .355 3.94 36 36 0 19 3 0 0 285.2 109 155 1.386 12.48 0.66
6 Dizzy Dean 1934 IMG 18 19 .486 3.24 47 35 12 23 2 4 50 319.1 98 207 1.271 11.44 0.51
Slim Jones 1934 CIR 20 19 .513 3.28 46 43 3 14 0 0 0 340 123 160 1.353 12.18 0.50
Jesse Haines 1927 IMG 16 19 .457 3.36 49 36 13 14 1 4 67 297.1 92 92 1.291 11.62 0.39
Andy Porter 1934 CIR 17 19 .472 4.01 44 44 0 6 0 0 0 329.2 128 115 1.498 13.49 0.52
Jack Kralick 1961 BBS 6 19 .240 4.66 31 31 0 7 2 0 0 218.1 57 123 1.392 12.53 1.20
11 Jesse Petty 1927 GTL 16 18 .471 3.02 40 36 4 14 1 0 0 283.1 74 103 1.214 10.93 0.29
Darryl Kile 1997 CIR 11 18 .379 4.32 41 41 0 1 0 0 0 256 148 189 1.457 13.11 1.09
J.r. Richard 1977 BBS 11 18 .379 4.40 34 34 0 11 2 0 0 268 108 207 1.287 11.59 1.21
Jimmy Key 1997 CIR 7 18 .280 4.46 36 36 0 0 0 0 0 212 84 139 1.528 13.75 0.93
Vic Raschi 1949 CIR 13 18 .419 4.79 43 43 0 6 0 0 0 298.2 194 137 1.610 14.49 0.63
George Giles 1927 PBP 10 18 .357 4.82 49 35 14 5 1 1 100 240.2 118 53 1.546 13.91 0.30
Ted Trent 1934 MNL 13 18 .419 4.84 40 35 5 6 0 1 100 256.2 100 99 1.523 13.71 0.70
18 Mel Parnell 1949 BRI 20 17 .541 3.35 40 40 0 18 5 0 0 322.1 134 133 1.350 12.15 0.47
Ellis Kinder 1949 TAF 11 17 .393 3.80 36 33 3 8 3 1 50 241.2 88 149 1.283 11.54 0.97
Ed Lopat 1949 BRI 9 17 .346 4.14 37 36 1 2 0 0 0 230.1 99 68 1.459 13.13 0.63
Sugg Cornelius 1927 SSL 9 17 .346 4.17 36 33 3 7 0 0 0 215.2 102 62 1.567 14.11 0.46
Madison Bumgarner 2015 GTL 9 17 .346 4.17 30 30 0 4 1 0 0 211.2 45 218 1.294 11.65 1.06
Sugg Cornelius 1934 SSL 13 17 .433 4.28 41 41 0 1 1 0 0 267.1 131 76 1.668 15.01 0.44
Dave Mcnally 1974 BBC 3 17 .150 4.43 34 34 0 1 0 0 0 189 75 93 1.550 13.95 0.95
Webster McDonald 1934 CIR 13 17 .433 4.48 42 41 1 8 2 0 0 295.1 143 75 1.558 14.02 0.43
Russ Meyer 1949 SSL 7 17 .292 4.94 34 29 5 6 0 1 100 200.1 92 74 1.502 13.52 1.03
Hal Schumacher 1934 PFW 15 17 .469 5.03 43 41 2 4 0 1 100 289.2 130 111 1.595 14.35 0.93
Jerry Reuss 1977 BBS 5 17 .227 5.20 32 32 0 0 0 0 0 180 72 112 1.611 14.50 1.00
George Blaeholder 1934 SSL 9 17 .346 5.34 33 30 3 6 0 0 0 197.1 60 63 1.632 14.69 1.00
Rufus Lewis 1949 MNL 10 17 .370 5.82 37 34 3 4 1 1 100 227.1 94 116 1.579 14.21 1.23
31 Burleigh Grimes 1927 SSL 16 16 .500 2.65 46 32 14 5 2 0 0 258 94 115 1.291 11.62 0.42
Lefty Grove 1927 SRR 14 16 .467 2.99 73 26 47 5 2 4 50 274.1 128 184 1.436 12.93 0.20
Nolan Ryan 1977 SRR 16 16 .500 3.26 37 37 0 10 0 0 0 268 206 298 1.474 13.26 0.47
Mel Harder 1934 MOZ 13 16 .448 3.34 54 24 30 9 0 13 68 245.1 67 89 1.182 10.64 0.33
Jeff Fassero 1997 HRH 12 16 .429 3.82 33 33 0 4 2 0 0 224 77 161 1.250 11.25 0.80
Warren Spahn 1961 SUS 9 16 .360 4.07 30 28 2 5 1 0 0 181.1 60 81 1.417 12.76 1.29
Chris Holt 1997 HRH 6 16 .273 4.10 31 31 0 0 0 0 0 184.1 61 89 1.297 11.67 1.03
Lefty Lamarque 1949 GTL 15 16 .484 4.15 41 41 0 12 2 0 0 297.1 80 110 1.339 12.05 0.64
Jack Banta 1949 PVA 9 16 .360 4.29 77 0 77 0 0 22 67 121.2 70 75 1.471 13.24 0.96
Crush Holloway 1927 SSL 10 16 .385 4.34 34 33 1 8 0 0 0 221.2 133 90 1.674 15.06 0.45
Lon Warneke 1934 QCK 19 16 .543 4.47 48 38 10 13 1 5 83 306 87 159 1.392 12.53 0.62
Rube Walberg 1927 GTL 9 16 .360 4.75 38 29 9 5 3 2 50 217.2 99 103 1.475 13.27 0.54
Andy Cooper 1934 COL 11 16 .407 4.92 73 7 66 1 0 12 46 150 40 63 1.500 13.50 0.48
David Wells 1997 TLF 10 16 .385 5.43 34 34 0 1 1 0 0 192.1 52 126 1.466 13.20 1.40
Doyle Alexander 1977 SSL 11 16 .407 5.76 36 36 0 3 0 0 0 211 96 91 1.682 15.14 1.49
46 Frank Lary 1961 SUS 12 15 .444 2.82 30 29 1 9 5 0 0 214 61 107 1.131 10.18 0.46
Gready McKinnis 1949 SSL 11 15 .423 2.83 32 32 0 9 0 0 0 229 75 103 1.162 10.45 0.51
Lefty Gomez 1934 SRR 18 15 .545 2.98 62 30 32 11 4 6 75 295.2 126 167 1.258 11.32 0.61
Virgil Trucks 1949 PVA 13 15 .464 3.52 39 37 2 15 0 1 100 289 128 156 1.277 11.49 0.69
Milt Gaston 1927 MIT 8 15 .348 3.74 46 32 14 2 0 0 0 202.1 72 64 1.334 12.01 0.49
Ed Brandt 1934 IMG 15 15 .500 3.79 49 26 23 5 0 2 33 249.2 97 101 1.422 12.80 0.43
Joey Jay 1961 SRR 10 15 .400 3.85 32 31 1 5 2 0 0 196.1 91 126 1.396 12.56 1.15
Dave Goltz 1977 DIN 16 15 .516 3.88 41 41 0 5 0 0 0 294.1 106 183 1.277 11.50 0.76
Hal Newhouser 1949 TAF 14 15 .483 4.13 46 33 13 11 1 5 100 268 104 142 1.340 12.06 0.94
Bob Feller 1949 TAF 9 15 .375 4.21 36 30 6 4 0 0 0 226.2 85 121 1.416 12.75 0.60
Virgil Barnes 1927 TLF 9 15 .375 4.23 32 32 0 0 0 0 0 198 65 59 1.545 13.91 0.32
Ron Guidry 1977 CIR 7 15 .318 4.23 35 29 6 5 0 1 50 204.1 91 179 1.419 12.77 0.97
Bill C. Lee 1934 DOG 7 15 .318 4.33 49 30 19 1 1 0 0 208 89 88 1.481 13.33 0.61
Red Ruffing 1934 DIN 15 15 .500 4.33 42 33 9 12 1 0 0 262 105 153 1.538 13.84 0.86
Denny Neagle 1997 TLF 9 15 .375 4.36 34 34 0 1 1 0 0 223 45 163 1.157 10.41 1.41
Big Bill Foster 1934 PFW 17 15 .531 4.40 45 41 4 16 3 1 100 325 132 88 1.425 12.82 0.61
Vern Bickford 1949 BRI 13 15 .464 4.46 38 38 0 3 1 0 0 252.1 115 129 1.403 12.63 0.64
Paul Dean 1934 DOG 13 15 .464 4.54 46 31 15 6 0 4 67 240 65 160 1.408 12.68 0.75
Pat Malone 1934 SRR 15 15 .500 4.64 62 23 39 0 0 4 67 198 91 115 1.561 14.05 0.91
Wes Ferrell 1934 THD 13 15 .464 4.65 61 16 45 6 0 6 60 187.2 59 58 1.444 13.00 0.67
Jim Bibby 1974 SEP 7 15 .318 4.91 32 32 0 3 0 0 0 176 97 91 1.551 13.96 1.28
George McAllister 1927 TLF 9 15 .375 4.95 30 26 4 0 0 2 100 171 24 29 1.439 12.95 0.84
Ray Brown 1934 COL 14 15 .483 5.28 41 37 4 2 0 0 0 255.2 108 101 1.733 15.59 0.67
Monte Weaver 1934 SSL 4 15 .211 5.54 31 31 0 1 0 0 0 186.2 67 49 1.736 15.62 0.82
Johnny Marcum 1934 THD 12 15 .444 5.80 43 36 7 3 0 1 33 235.2 89 96 1.625 14.63 1.11
Huck Betts 1934 SSL 10 15 .400 6.52 70 0 70 0 0 16 52 88.1 26 30 1.732 15.59 0.71
Tom Zachary 1927 BRI 5 15 .250 6.92 38 22 16 0 0 1 50 135.1 57 25 1.899 17.09 0.47
73 David Price 2015 PVD 9 14 .391 2.87 32 32 0 1 0 0 0 213 42 214 1.169 10.52 0.46
Jack Quinn 1927 TBK 8 14 .364 2.93 30 26 4 7 2 0 0 193.1 62 48 1.407 12.66 0.37
Jim Palmer 1977 IMG 16 14 .533 3.38 38 38 0 6 0 0 0 288 107 205 1.205 10.84 0.97
Johnny Cueto 2015 BRI 7 14 .333 3.57 33 32 1 2 0 0 0 211.2 54 177 1.252 11.27 1.11
Felix Hernandez 2015 QCK 13 14 .481 3.70 30 30 0 2 0 0 0 199.2 60 198 1.187 10.68 1.13
Don Cardwell 1961 THD 15 14 .517 3.76 36 36 0 4 4 0 0 248.2 95 150 1.307 11.76 1.05
Al Benton 1949 PBP 13 14 .481 3.78 82 0 82 0 0 27 68 104.2 51 31 1.586 14.27 0.60
Newt Joseph 1927 CIR 14 14 .500 3.79 36 35 1 5 2 0 0 249.1 93 37 1.336 12.02 0.36
Bill V. Swift 1934 IMG 10 14 .417 3.82 52 22 30 1 1 5 71 198 63 69 1.359 12.23 0.68
Rick Reuschel 1977 BBS 12 14 .462 3.85 38 38 0 2 0 0 0 243 74 163 1.296 11.67 0.48
Hoyt Wilhelm 1961 THD 8 14 .364 3.88 66 0 66 0 0 21 68 109 51 74 1.440 12.96 0.83
Eppa Rixey 1927 TBK 9 14 .391 3.99 39 28 11 5 0 0 0 201 48 41 1.493 13.43 0.40
Paul Splittorff 1974 SEP 10 14 .417 4.06 32 32 0 1 0 0 0 193 59 75 1.373 12.36 0.98
Jay Heard 1949 CIR 16 14 .533 4.07 44 44 0 3 0 0 0 307.2 110 138 1.297 11.67 0.82
Jim Bibby 1977 MNL 10 14 .417 4.10 34 33 1 0 0 0 0 204 99 145 1.510 13.59 0.88
Tyson Ross 2015 PFW 12 14 .462 4.12 31 31 0 0 0 0 0 185.2 77 201 1.212 10.91 0.87
Jim Bunning 1961 BBS 12 14 .462 4.12 32 32 0 9 3 0 0 233.2 70 143 1.262 11.36 1.54
Don Newcombe 1949 MNL 15 14 .517 4.16 37 34 3 11 1 0 0 255.1 96 155 1.449 13.04 0.81
John Lackey 2015 PFW 12 14 .462 4.18 33 33 0 2 0 0 0 217.1 64 145 1.238 11.14 1.08
Scott Kazmir 2015 MNL 6 14 .300 4.34 30 30 0 0 0 0 0 178.1 70 138 1.335 12.01 0.96
Rudy May 1977 TLF 9 14 .391 4.36 32 32 0 0 0 0 0 198.1 67 96 1.286 11.57 0.91
Tex Carleton 1934 SSL 13 14 .481 4.44 32 31 1 4 1 0 0 223 75 90 1.471 13.24 1.01
Groundhog Thompson 1949 BRI 13 14 .481 4.47 34 33 1 3 0 0 0 221.2 58 69 1.389 12.51 0.65
Noah Syndergaard 2015 MNL 5 14 .263 4.52 23 23 0 0 0 0 0 147.1 39 148 1.229 11.06 1.53
Vida Blue 1977 SSL 9 14 .391 4.61 35 35 0 4 1 0 0 230.1 76 139 1.363 12.27 1.56
Pat Hentgen 1997 CIR 9 14 .391 4.68 41 41 0 1 1 0 0 244 76 157 1.357 12.21 1.44
Monte Pearson 1934 QCK 9 14 .391 4.79 38 24 14 9 1 1 33 205 111 95 1.537 13.83 0.75
Jerry Augustine 1977 GTL 8 14 .364 4.81 28 28 0 0 0 0 0 181.1 48 64 1.395 12.56 0.94