Single-Season Losses
Leaderboard
 
* - Indicates Hall of Fame
Rank    Player Losses IP Year Career Leaderboard
1.    Allen Kazunori 31 157.3 2038  
  John Bale 31 227.0 2015  
3.    Joe Saunders 30 221.0 2021  
4.    Ben Ibaņez 29 240.7 2057  
  David Johnson 29 197.0 2032  
  Johnny Jackson 29 208.7 2017  
  Eddy Vidro 29 255.3 2016  
8.    Travis Lewis 28 224.7 2050  
  Joseph Sawyer 28 225.0 2039  
  Ron Pucci 28 208.0 2017  
11.    Patrick Hood 27 197.7 2061  
  Manuel Garcia 27 209.3 2056  
  Ben Ibaņez 27 211.0 2055  
  Daniel Logue 27 240.0 2038  
  Tony Botella 27 188.3 2038  
  Dave Vivier 27 213.7 2021  
  Tom Fanovich 27 215.0 2017  
18.    Ike Davis Jr. 26 214.3 2056  
  Mariano Gurrola 26 153.3 2051  
  Gustavo Mora 26 145.7 2048  
  Erin Depue 26 206.7 2035  
  Alfredo Pizarro 26 228.0 2033  
  Charles McCollum 26 189.7 2031  
  Arturo Espinosa 26 268.7 2027  
  Craig Hudson 26 221.3 2027  
  Ron Griggs 26 154.7 2024  
  Matt Belisle 26 208.0 2023  
  Osvaldo Escobedo 26 142.7 2022  
  Richard Ankiel 26 229.7 2017  
  Morrie Konopka 26 202.3 2017  
31.    Tsukasa Heizo 25 219.7 2058  
  Lance Lynn 25 258.7 2057  
  Rudolph Dustin 25 232.3 2057  
  Aroldis Chapman 25 158.7 2051  
  Dennis Kump 25 254.7 2039  
  Edwin Jackson 25 235.0 2037  
  James Giancola 25 130.0 2036  
  Leo Salas 25 158.7 2035  
  James Giancola 25 133.7 2035  
  Leo Salas 25 168.3 2033  
  Roque Vivas 25 176.7 2032  
  Dennis Croce 25 177.3 2027  
  Charles Gorney 25 167.0 2026  
  Craig Hudson 25 210.7 2025  
  Fred Capasso 25 213.0 2022  
  Buford Cooper 25 204.3 2021  
  Ron Pucci 25 198.0 2018  
  Monte Bissonette 25 177.3 2018  
  Ray Lollar 25 133.3 2018  
  Aaron Cook 25 234.3 2017  
  Brian Rose 25 248.7 2012  
  Sun-Woo Kim 25 125.0 2010  
  Scott Erickson 25 185.0 2002  
54.    Kanehiro Narihira 24 231.7 2062  
  Amadeo Ramirez 24 192.0 2054  
  Donald Light 24 232.0 2053  
  Jake Arrieta 24 175.7 2052  
  Kounojirou Koetsu 24 243.3 2048  
  Scott Morales 24 256.3 2041  
  Freddy Banas 24 275.3 2039  
  Freddy Banas 24 267.3 2037  
  Leo Salas 24 152.7 2037  
  Russell Shafer 24 261.7 2036  
  Paul Wickham 24 179.0 2036  
  Leo Salas 24 160.0 2036  
  Harvey Chagoya 24 153.7 2036  
  Jeff Marconi 24 246.0 2034  
  Leo Salas 24 170.7 2034  
  Jesus Gracia 24 269.0 2031  
  Shag Walsh Jr. 24 185.3 2029  
  David Price 24 256.0 2028  
  Craig Hudson 24 237.0 2028  
  Stanley Cooper 24 172.0 2027  
  Ralph Giunta 24 235.0 2025  
  Tony Coronas 24 179.0 2022  
  Brad Baker 24 199.7 2020  
  Matthew Fox 24 278.7 2019  
  Craig Hudson 24 241.3 2019  
  Eddy Vidro 24 299.0 2017  
  Derrick Grigsby 24 256.3 2017  
  Jake Westbrooks 24 232.0 2017  
  John Bale 24 240.0 2014  
  Curtis Cameron 24 234.0 2012  
84.    Bernardo Fernandez 23 161.3 2060  
  Shannon Otwell 23 226.7 2049  
  Julian Myles 23 262.3 2042  
  Ricky Nolasco 23 221.3 2041  
  Joshua Davis 23 207.0 2041  
  Justin Masterson 23 228.7 2038  
  Clarence Stoll 23 223.3 2037  
  James Giancola 23 144.7 2037  
  Judson Harvey 23 174.7 2032  
  Toshoze Tadayuki 23 236.0 2028  
  Dennis Croce 23 160.0 2028  
  Robert Paz 23 208.7 2024  
  Craig Hudson 23 167.7 2024  
  Tony Coronas 23 175.3 2020  
  Aaron Cook 23 234.0 2019  
  Jason Stumm 23 288.3 2016  
  Dick Wiesler 23 268.7 2016