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| Single-Season Homeruns Allowed Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | Homeruns Allowed | IP | Year | Career Leaderboard |
| 1. | Kelly Leak | 54 | 196.3 | 2026 | |
| 2. | Chory Spoone | 50 | 205.0 | 2024 | |
| Scott Graham | 50 | 297.3 | 2012 | ||
| 4. | Hideo Nomo | 48 | 196.7 | 2004 | |
| 5. | Adam Herzig | 47 | 236.3 | 2027 | |
| 6. | William Ventimiglia | 46 | 194.7 | 2022 | |
| Ben Sheets | 46 | 202.0 | 2011 | ||
| Sidney Ponson | 46 | 200.7 | 2006 | ||
| 9. | Felix Hernandez | 45 | 231.0 | 2011 | |
| 10. | Brandon Morrow | 44 | 197.7 | 2026 | |
| Luke Hochevar | 44 | 282.7 | 2022 | ||
| J.P. Howell | 44 | 226.0 | 2011 | ||
| Paul Byrd | 44 | 192.0 | 2004 | ||
| 14. | Humberto Sanchez | 43 | 212.0 | 2025 | |
| Humberto Sanchez | 43 | 219.3 | 2022 | ||
| Scott Graham | 43 | 252.3 | 2014 | ||
| Blake Hawksworth | 43 | 200.7 | 2008 | ||
| 18. | Gerrit Cole | 42 | 205.3 | 2026 | |
| Luke Hochevar | 42 | 220.3 | 2024 | ||
| Aaron Crow | 42 | 212.7 | 2023 | ||
| Davis Romero | 42 | 185.3 | 2022 | ||
| Jered Weaver | 42 | 216.7 | 2013 | ||
| John Lackey | 42 | 237.0 | 2011 | ||
| 24. | Andre Corcuera | 41 | 226.7 | 2027 | |
| Kelly Leak | 41 | 196.3 | 2024 | ||
| Freddy Garcia | 41 | 220.7 | 2010 | ||
| Randy Johnson * | 41 | 250.0 | 2004 | ||
| 28. | Gerrit Cole | 40 | 215.0 | 2027 | |
| Yong Watts | 40 | 211.3 | 2025 | ||
| Jay Rainville | 40 | 258.3 | 2020 | ||
| Jay Rainville | 40 | 258.3 | 2013 | ||
| 32. | Luke Hochevar | 39 | 246.0 | 2026 | |
| Gio Gonzalez | 39 | 243.3 | 2026 | ||
| Jerry Blevins | 39 | 234.3 | 2026 | ||
| James McDonald | 39 | 212.3 | 2026 | ||
| Luke Hochevar | 39 | 187.0 | 2025 | ||
| Marcos Pedigo | 39 | 242.3 | 2024 | ||
| John Howard | 39 | 204.0 | 2022 | ||
| Seve Padilla | 39 | 228.0 | 2021 | ||
| Luke Hochevar | 39 | 264.7 | 2020 | ||
| Joseph Bauserman | 39 | 238.3 | 2014 | ||
| Edwin Jackson | 39 | 233.0 | 2014 | ||
| Clint Brannon | 39 | 184.0 | 2011 | ||
| Justin Orenduff | 39 | 204.7 | 2010 | ||
| 45. | Jerry Blevins | 38 | 250.0 | 2027 | |
| Brandon Morales | 38 | 215.7 | 2027 | ||
| Chory Spoone | 38 | 209.7 | 2026 | ||
| Seve Padilla | 38 | 231.0 | 2025 | ||
| Homer Bailey | 38 | 215.7 | 2012 | ||
| Blake Hawksworth | 38 | 219.3 | 2010 | ||
| Joe Coppinger | 38 | 146.3 | 2009 | ||
| Kelvim Escobar | 38 | 199.7 | 2005 | ||
| 53. | Yoshihisa Naruse | 37 | 280.0 | 2027 | |
| Adam Herzig | 37 | 242.3 | 2026 | ||
| Bryan Littrell | 37 | 189.0 | 2026 | ||
| Humberto Sanchez | 37 | 201.3 | 2024 | ||
| Chory Spoone | 37 | 187.0 | 2023 | ||
| Waldis Joaquin | 37 | 203.0 | 2022 | ||
| Roderick Jess | 37 | 208.3 | 2020 | ||
| Mark Mulder | 37 | 255.0 | 2014 | ||
| Trinidad Demery | 37 | 190.0 | 2010 | ||
| Jae-Kuk Ryu | 37 | 178.0 | 2010 | ||
| Jesse Foppert | 37 | 166.0 | 2010 | ||
| Taylor Buchholz | 37 | 175.7 | 2007 | ||
| Bartolo Colon | 37 | 204.3 | 2004 | ||
| Randy Wolf | 37 | 202.3 | 2004 | ||
| 67. | Jacob McGee | 36 | 256.7 | 2026 | |
| Jerry Blevins | 36 | 250.0 | 2025 | ||
| Albert Romero | 36 | 219.0 | 2025 | ||
| Kelly Leak | 36 | 201.7 | 2025 | ||
| Jacob Odorizzi | 36 | 195.3 | 2025 | ||
| Brett Myers Jr. | 36 | 172.0 | 2025 | ||
| Seve Padilla | 36 | 253.0 | 2024 | ||
| Calvin Washington | 36 | 198.0 | 2024 | ||
| David Price | 36 | 202.0 | 2023 | ||
| Scott Elbert | 36 | 213.3 | 2021 | ||
| Anibal Sanchez | 36 | 217.0 | 2019 | ||
| Andrew Miller | 36 | 206.3 | 2016 | ||
| Blake Hawksworth | 36 | 174.0 | 2016 | ||
| Blake Hawksworth | 36 | 234.7 | 2013 | ||
| Gavin Floyd | 36 | 222.3 | 2012 | ||
| Casey Daigle | 36 | 188.3 | 2012 | ||
| Jeremy Bonderman | 36 | 237.7 | 2010 | ||
| Jason Stanford | 36 | 179.7 | 2010 | ||
| Ben Sheets | 36 | 237.0 | 2007 | ||
| Curt Schilling | 36 | 287.3 | 2004 | ||
| John Lackey | 36 | 217.0 | 2004 | ||
| Ryan Franklin | 36 | 192.0 | 2004 | ||
| 89. | Jacob McGee | 35 | 240.7 | 2027 | |
| Albert Romero | 35 | 231.7 | 2027 | ||
| Brian Matusz | 35 | 237.7 | 2026 | ||
| Bradley Holt | 35 | 183.0 | 2026 | ||
| Brian Matusz | 35 | 216.7 | 2025 | ||
| Mario Silva | 35 | 189.7 | 2024 | ||
| Clint Brannon | 35 | 188.0 | 2022 | ||
| Ross Detwiler | 35 | 205.3 | 2021 | ||
| Danny Fasching | 35 | 193.7 | 2019 | ||
| Vicente Mendez | 35 | 197.7 | 2017 | ||
| Puresuton Taroemon | 35 | 167.3 | 2017 | ||
| Dennis Sarfate | 35 | 226.0 | 2014 | ||
| Dennis Morrow | 35 | 179.7 | 2014 | ||
| Charles Carnegie | 35 | 179.3 | 2014 | ||
| Jeff Weaver | 35 | 239.3 | 2013 | ||
| John Lackey | 35 | 207.7 | 2013 | ||
| Adam Eaton | 35 | 200.7 | 2013 | ||
| Scott Graham | 35 | 155.7 | 2013 | ||
| Grant Roberts | 35 | 195.0 | 2012 | ||
| Scott Graham | 35 | 304.3 | 2010 | ||
| Jay Sborz | 35 | 237.7 | 2010 | ||
| Mike Esposito | 35 | 208.0 | 2010 | ||
| Brian Lawrence | 35 | 179.7 | 2010 | ||
| Tyler Clippard | 35 | 190.0 | 2008 | ||
| Hong-Chih Kuo | 35 | 216.0 | 2007 | ||
| Mark Mulder | 35 | 228.7 | 2005 | ||
| John Lackey | 35 | 190.7 | 2005 | ||
| Ted Lilly | 35 | 204.0 | 2004 | ||
| Vicente Padilla | 35 | 202.3 | 2004 | ||
| 118. | David Price | 34 | 214.0 | 2027 | |
| Nick Adenhart | 34 | 195.3 | 2027 | ||
| Ross Detwiler | 34 | 208.3 | 2024 | ||
| Jerry Blevins | 34 | 231.7 | 2023 | ||
| Kiki Jones | 34 | 212.3 | 2022 | ||
| Jerry Blevins | 34 | 228.3 | 2021 | ||
| Vicente Mendez | 34 | 211.7 | 2021 | ||
| Jair Jurrjens | 34 | 204.3 | 2021 | ||
| Brent Fisher | 34 | 194.0 | 2020 | ||
| Clay Buchholz | 34 | 227.0 | 2019 | ||
| Jay Rainville | 34 | 232.0 | 2018 | ||
| Anibal Sanchez | 34 | 196.0 | 2018 | ||
| Matt Durkin | 34 | 202.3 | 2017 | ||
| Kyle Davies | 34 | 203.7 | 2016 | ||
| Joel Hanrahan | 34 | 220.3 | 2014 | ||
| Puresuton Taroemon | 34 | 193.0 | 2014 | ||
| Logan Kensing | 34 | 174.0 | 2013 | ||
| Jay Sborz | 34 | 227.0 | 2011 | ||
| Travis Foley | 34 | 173.3 | 2011 | ||
| Jason Jennings | 34 | 208.3 | 2010 | ||
| Ben Sheets | 34 | 201.3 | 2010 | ||
| Roy Oswalt | 34 | 177.0 | 2009 | ||
| Freddy Garcia | 34 | 205.3 | 2007 | ||
| Tyler Clippard | 34 | 176.0 | 2007 | ||
| Erik Bedard | 34 | 164.3 | 2007 | ||
| Jeremy Bonderman | 34 | 211.7 | 2006 | ||
| Ted Lilly | 34 | 178.7 | 2006 | ||
| Darren Dreifort | 34 | 193.7 | 2005 | ||
| Jeremi Gonzalez | 34 | 171.7 | 2005 | ||
| Livan Hernandez | 34 | 226.7 | 2004 | ||
| Billy Traber | 34 | 206.0 | 2004 | ||
| Kerry Wood | 34 | 202.7 | 2004 | ||
| Chris Reitsma | 34 | 157.0 | 2004 |
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