Single-Season ERA
Leaderboard
 
* - Indicates Hall of Fame
Rank    Player ERA IP Year Career Leaderboard
1.    Piggy Irving 1.481 346.3 1890  
2.    Pat Manke 1.585 284.0 1876  
3.    Howard Bloomer 1.596 276.3 1876  
4.    Paul Trail 1.688 352.0 1888  
5.    Eli Money 1.739 502.0 1884  
6.    Ray Hayden 1.783 217.0 1872  
7.    John Mattern 1.873 221.0 1875  
8.    Rich Deem 1.878 589.3 1879  
9.    Mark Thelen 1.889 343.0 1890  
10.    Paul Trail 1.966 348.0 1890  
11.    Preston Applegate 1.974 383.0 1885  
12.    Bob Blue 1.989 534.0 1884  
13.    Kyle Fast 1.995 433.0 1888  
14.    Paul Trail 2.039 362.0 1891  
15.    Woody Norris 2.043 387.7 1884  
16.    Jonathan Montgomery 2.048 413.0 1890  
17.    Thomas Goss 2.051 377.3 1890  
18.    Paul Wayman 2.054 447.0 1884  
19.    Johnny Hartman 2.101 321.3 1876  
20.    Floyd Birdsong 2.103 470.7 1884  
21.    George Tharp 2.109 350.0 1890  
22.    Dan Buckner 2.111 247.3 1888  
23.    John Thibeault 2.123 254.3 1890  
24.    Luke Johnson 2.127 359.7 1885  
25.    Kyle Fast 2.129 173.3 1886  
26.    Jeff Rainwater 2.138 328.3 1873  
27.    Bill Silvers 2.158 333.7 1888  
28.    Joe Purkey 2.159 354.3 1890  
29.    Harry Bogle 2.162 374.7 1890  
30.    Jim Smothers 2.171 228.0 1876  
31.    Ken Hanner 2.177 297.7 1873  
32.    Randy Lumley 2.183 391.7 1888  
33.    Harry Bogle 2.183 325.7 1888  
34.    Randy Sergent 2.184 362.7 1890  
35.    Joe Philpott 2.189 415.3 1886  
36.    Tom Bauman 2.191 443.7 1884  
37.    Thomas Goss 2.193 410.3 1882  
38.    Floyd Riley 2.212 215.7 1881  
39.    John Wiggins 2.213 427.0 1888  
40.    Beans Miller 2.223 356.3 1890  
41.    Mike Parker 2.237 225.3 1872  
42.    Ronald Mason 2.256 379.0 1891  
43.    Randy Lumley 2.258 283.0 1886  
44.    Thomas Goss 2.258 558.0 1885  
45.    Dan Trim 2.272 447.7 1884  
46.    Stretch North 2.283 457.3 1885  
47.    Roger Arceneaux 2.286 413.3 1890  
48.    Dave Starks 2.295 333.3 1890  
49.    Ronald Mason 2.297 395.7 1889  
50.    Sam Van Den Hoff 2.312 241.3 1888  
51.    Cups Johnson 2.316 454.7 1884  
52.    Mark Revis 2.318 252.3 1871  
53.    Edmund Madison 2.320 310.3 1876  
54.    Thomas Goss 2.326 433.3 1886  
55.    Pat Manke 2.344 549.0 1878  
56.    Dave Gunn 2.345 322.3 1890  
57.    Joe Philpott 2.352 413.3 1882  
58.    Bulldog Ayers 2.352 566.3 1885  
59.    Jim Durr 2.353 394.0 1888  
60.    Bill Silvers 2.360 354.7 1891  
61.    Virgil Arwood 2.365 255.0 1885  
62.    Jim Durr 2.370 338.0 1886  
63.    Pat Manke 2.370 573.3 1875  
64.    John Wiggins 2.371 334.0 1890  
65.    Fred Jones 2.375 337.3 1890  
66.    Bill Jones 2.382 192.7 1888  
67.    Joe Philpott 2.383 574.0 1883  
68.    Paul Trail 2.392 380.0 1886  
69.    Ed Templin 2.416 361.3 1890  
70.    Pat Bratton 2.418 268.0 1890  
71.    Jim Campbell 2.426 378.3 1890  
72.    Joe Davis 2.430 363.0 1886  
73.    Donald Persaud 2.431 411.0 1882  
74.    Bobby Utley 2.431 377.7 1883  
75.    Jacob Darflinger 2.439 358.0 1888  
76.    John Maxwell 2.447 309.0 1890  
  Dillon Ehrhardt 2.447 515.0 1884  
  Bulldog Ayers 2.447 515.0 1884  
79.    Jeff Rainwater 2.455 275.0 1872  
80.    Jeff Rainwater 2.459 596.7 1874  
81.    Jim Durr 2.468 590.7 1880  
82.    Ryan Sebastian 2.473 364.0 1889  
83.    Rich Deem 2.475 560.0 1880  
84.    Edmund Madison 2.476 541.7 1880  
85.    Arthur Nowlin 2.476 261.7 1890  
86.    Bill McAnderson 2.478 178.0 1880  
87.    Heinie Ebeling 2.483 464.0 1884  
88.    Edmund Madison 2.500 252.0 1875  
89.    Piggy Irving 2.509 240.3 1889  
90.    Thomas Goss 2.521 357.0 1891  
91.    Floyd Riley 2.524 410.0 1884  
92.    Joe Philpott 2.526 367.0 1890  
93.    Jerry Christenson 2.526 274.3 1890  
94.    Harlan Beesley 2.528 534.0 1884  
95.    Joe Purkey 2.529 430.7 1885  
96.    Bill McAnderson 2.529 341.7 1882  
97.    Dan Buckner 2.532 536.7 1884  
98.    George Hughes 2.534 277.0 1888  
99.    Jim Ebersole 2.535 213.0 1876  
100.    Dan Buckner 2.536 553.7 1883