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Single-Season ERA
Leaderboard
 
* - Indicates Hall of Fame
Rank    Player ERA IP Year Career Leaderboard
1.    Douglas Morehead 1.415 216.3 2014  
2.    Colin Oldham 1.500 180.0 2022  
3.    Roderick Pickens * 1.584 267.0 2010  
4.    Keith Kaster 1.602 196.7 2012  
5.    Douglas Morehead 1.632 231.7 2018  
6.    Felix Rodriguez 1.683 230.0 2023  
7.    Colin Oldham 1.691 181.0 2023  
8.    James Rhinehart * 1.732 291.0 2015  
9.    Ricky Santos 1.787 186.3 2022  
10.    Alexander Carreras 1.816 292.3 2016  
11.    Antony Roseberry 1.817 242.7 2014  
12.    Harold Smith 1.818 237.7 2013  
13.    Giuseppe Gonzalez 1.861 217.7 2014  
14.    Douglas Morehead 1.873 221.0 2019  
15.    Robert Ferebee 1.880 277.7 2016  
16.    Alexander Carreras 1.891 290.3 2017  
17.    Bryce Fiqueroa 1.904 212.7 2013  
18.    Robert Ferebee 1.936 260.3 2018  
19.    Jorge Romriell * 1.953 212.0 2007  
20.    Fred Bush 1.972 264.7 2012  
21.    Douglas Morehead 1.998 211.7 2023  
22.    Lester Olson * 2.002 256.3 2006  
23.    Bryce Fiqueroa 2.010 259.7 2015  
24.    Michael Duval 2.024 169.0 2014  
25.    Edward James 2.045 215.7 2019  
26.    Angel Martinez 2.057 205.7 2015  
27.    Fred Bush 2.077 203.7 2014  
28.    Jamar Lopez 2.080 246.7 2015  
29.    Mario Valdez 2.090 211.0 2014  
30.    Hugh Switzer 2.093 215.0 2024  
31.    Giuseppe Gonzalez 2.095 197.7 2015  
32.    Richard Kerry 2.097 279.0 2015  
33.    Giuseppe Gonzalez 2.111 226.0 2018  
34.    Antony Roseberry 2.122 246.0 2016  
35.    Jeff Dibella 2.141 172.3 2019  
36.    Robert Ferebee 2.141 269.0 2017  
37.    Larry Miller 2.144 247.7 2025  
38.    Harold Smith 2.145 235.0 2016  
39.    Hansel Bibar 2.150 255.3 2019  
40.    Michael Higgins 2.151 167.3 2015  
41.    Giuseppe Gonzalez 2.155 221.3 2016  
42.    Colin Oldham 2.163 208.0 2020  
43.    Fred Bush 2.170 224.0 2015  
44.    Edward James 2.179 252.0 2025  
45.    James Rhinehart * 2.180 289.0 2017  
46.    Robert Ferebee 2.191 279.3 2019  
47.    Christopher Johnson * 2.203 224.7 2009  
48.    Giuseppe Gonzalez 2.211 211.7 2013  
49.    Paul Pastore 2.212 215.7 2013  
50.    Douglas Morehead 2.219 219.0 2020  
51.    Jamar Barrera 2.224 259.0 2005  
52.    Wilfredo Arguelles 2.225 178.0 2010  
53.    Elvis Seman 2.225 299.3 2014  
54.    Don Satchell 2.230 226.0 2021  
55.    Eldridge Oshea 2.231 278.3 2017  
56.    Alan Lasater 2.241 249.0 2018  
57.    Antony Roseberry 2.250 172.0 2015  
  Bryce Fiqueroa 2.250 252.0 2012  
59.    Dan Gammon 2.258 199.3 2016  
60.    Douglass Edwards 2.268 206.3 2016  
61.    Leonard Basso 2.272 237.7 2025  
62.    Alexander Carreras 2.273 289.0 2018  
63.    Joseph Pedrosa 2.278 217.3 2011  
64.    Andrew Mclellan 2.281 221.0 2013  
65.    Richard Wareham 2.281 217.0 2012  
66.    Jorge Romriell * 2.284 177.3 2008  
67.    Lester Olson * 2.299 278.0 2003  
68.    Jose Salinas 2.304 238.3 2018  
  Antony Roseberry 2.304 238.3 2017  
70.    Augustus Gerace 2.304 265.7 2012  
71.    Christopher Johnson * 2.306 226.3 2010  
72.    Mark Smolen * 2.310 261.0 2005  
73.    James Rhinehart * 2.315 287.7 2014  
74.    James Rhinehart * 2.317 279.7 2013  
75.    Fred Bush 2.323 279.0 2017  
76.    Harold Smith 2.324 232.3 2012  
77.    Jeremy Ford 2.333 262.3 2015  
78.    Travis Keys 2.341 238.3 2020  
79.    Douglas Morehead 2.345 238.0 2017  
80.    Larry Miller 2.345 253.3 2017  
81.    Allan Ferriera 2.360 232.7 2018  
82.    Elvis Seman 2.368 285.0 2015  
83.    Elmer Chesson 2.370 243.0 2012  
84.    Ben Pavlik 2.372 288.3 2010  
85.    Kelvin Caldera 2.373 269.3 2012  
86.    Harold Smith 2.375 257.7 2015  
87.    Roderick Pickens * 2.380 185.3 2009  
88.    Bob Cashion 2.383 253.0 2014  
89.    William Tieman 2.384 219.0 2014  
90.    Richard Papa 2.387 241.3 2017  
91.    Paul Pastore 2.387 218.7 2010  
92.    Douglass Edwards 2.392 222.0 2013  
93.    Peter Smitherman 2.399 262.7 2008  
94.    Floyd Cassella 2.400 165.0 2014  
95.    James Rhinehart * 2.402 251.0 2010  
96.    Douglas Morehead 2.404 224.7 2015  
97.    Nicholas George 2.405 179.7 2022  
98.    Colin Oldham 2.414 223.7 2024  
99.    Douglas Morehead 2.415 249.7 2013  
100.    Felix Rodriguez 2.421 245.3 2024  
 
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