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| Single-Season Walks Allowed Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | Walks Allowed | IP | Year | Career Leaderboard |
| 1. | Richard Menzies | 155 | 231.3 | 2016 | |
| 2. | Bobby Jenks | 149 | 238.7 | 2009 | |
| 3. | Richard Menzies | 147 | 210.7 | 2015 | |
| 4. | David Martinez | 146 | 274.7 | 2022 | |
| Bobby Jenks | 146 | 215.0 | 2015 | ||
| 6. | Larry Strope | 145 | 229.7 | 2019 | |
| 7. | Kerry Wood | 143 | 229.7 | 2009 | |
| 8. | Richard Menzies | 141 | 227.3 | 2012 | |
| 9. | Amadeo Samaniego | 140 | 177.3 | 2018 | |
| Bobby Jenks | 140 | 230.3 | 2010 | ||
| 11. | Samuel Servantes | 133 | 170.0 | 2022 | |
| Bobby Jenks | 133 | 207.3 | 2013 | ||
| 13. | Anthony Lezama | 132 | 236.3 | 2020 | |
| 14. | Bobby Jenks | 129 | 187.0 | 2016 | |
| Rich Harden | 129 | 159.3 | 2015 | ||
| 16. | Richard Menzies | 128 | 194.3 | 2013 | |
| 17. | Samuel Servantes | 126 | 209.3 | 2021 | |
| Bobby Jenks | 126 | 206.0 | 2014 | ||
| Bobby Jenks | 126 | 224.7 | 2012 | ||
| Chad Billingsley | 126 | 181.0 | 2008 | ||
| 21. | Gil Zeno | 125 | 156.7 | 2022 | |
| Richard Menzies | 125 | 201.7 | 2014 | ||
| 23. | Miguel Manrique | 124 | 254.3 | 2022 | |
| Darren Nigro | 124 | 202.0 | 2017 | ||
| 25. | Derrick Logan | 123 | 184.7 | 2021 | |
| 26. | Warren Stringfellow | 122 | 183.0 | 2019 | |
| Bobby Jenks | 122 | 176.3 | 2017 | ||
| 28. | Rich Harden | 121 | 186.7 | 2013 | |
| 29. | Brian Beaufort | 120 | 182.3 | 2018 | |
| Arthur Woods | 120 | 222.7 | 2015 | ||
| Kerry Wood | 120 | 206.0 | 2007 | ||
| 32. | Anthony Lezama | 119 | 213.0 | 2022 | |
| 33. | Brian Beaufort | 118 | 189.3 | 2019 | |
| Arthur Woods | 118 | 204.7 | 2017 | ||
| Brandon League | 118 | 169.0 | 2016 | ||
| Carlos Zambrano | 118 | 215.0 | 2004 | ||
| 37. | Miguel Manrique | 116 | 259.3 | 2021 | |
| Anthony Lezama | 116 | 199.7 | 2021 | ||
| Cecil Salas | 116 | 204.0 | 2018 | ||
| Richard Menzies | 116 | 178.0 | 2017 | ||
| Brandon League | 116 | 185.7 | 2009 | ||
| Kerry Wood | 116 | 224.0 | 2004 | ||
| 43. | Larry Strope | 115 | 239.3 | 2015 | |
| Oliver Perez | 115 | 192.0 | 2013 | ||
| 45. | Arthur Woods | 114 | 211.7 | 2016 | |
| 46. | Gil Zeno | 113 | 211.3 | 2020 | |
| Zach Parker | 113 | 202.7 | 2017 | ||
| Carlos Zambrano | 113 | 212.7 | 2016 | ||
| Rich Harden | 113 | 156.3 | 2016 | ||
| Zack Greinke | 113 | 195.0 | 2013 | ||
| Josh Beckett | 113 | 250.3 | 2012 | ||
| Carlos Zambrano | 113 | 233.7 | 2011 | ||
| Kelvim Escobar | 113 | 208.0 | 2005 | ||
| 54. | Gil Zeno | 112 | 180.7 | 2018 | |
| Lewis Washburn | 112 | 230.0 | 2017 | ||
| Amadeo Samaniego | 112 | 188.3 | 2016 | ||
| Dustin McGowan | 112 | 179.3 | 2016 | ||
| Clint Nageotte | 112 | 196.0 | 2015 | ||
| Jason Johnson | 112 | 196.7 | 2010 | ||
| 60. | John Holley | 111 | 214.7 | 2021 | |
| Clint Everts | 111 | 202.0 | 2019 | ||
| Hong-Chih Kuo | 111 | 221.3 | 2014 | ||
| Carlos Hernandez | 111 | 189.3 | 2014 | ||
| James Ramirez | 111 | 182.3 | 2014 | ||
| Bobby Jenks | 111 | 221.3 | 2011 | ||
| 66. | Brandon League | 110 | 158.0 | 2017 | |
| Jon Lester | 110 | 170.7 | 2016 | ||
| Josh Beckett | 110 | 232.7 | 2010 | ||
| 69. | Samuel Servantes | 109 | 201.0 | 2020 | |
| Warren Stringfellow | 109 | 149.0 | 2020 | ||
| Carl Hiles | 109 | 198.0 | 2018 | ||
| Yorman Bazardo | 109 | 232.0 | 2014 | ||
| Larry Strope | 109 | 206.0 | 2014 | ||
| Darren Nigro | 109 | 239.7 | 2012 | ||
| Bobby Jenks | 109 | 181.0 | 2008 | ||
| 76. | Eric Losey | 108 | 246.3 | 2020 | |
| Pedro Galindo | 108 | 194.7 | 2017 | ||
| Carlos Silva | 108 | 162.0 | 2017 | ||
| Jose Mendoza | 108 | 183.7 | 2015 | ||
| Angel Moreno | 108 | 195.3 | 2010 | ||
| Clint Everts | 108 | 234.3 | 2009 | ||
| Kerry Wood | 108 | 224.0 | 2008 | ||
| 83. | Daniel Ramirez | 107 | 208.3 | 2019 | |
| Faustino Fusco | 107 | 172.7 | 2019 | ||
| Zach Parker | 107 | 172.7 | 2018 | ||
| Felix Hernandez | 107 | 200.0 | 2010 | ||
| Rich Harden | 107 | 178.7 | 2010 | ||
| 88. | Yorman Bazardo | 106 | 201.0 | 2017 | |
| Larry Strope | 106 | 186.7 | 2017 | ||
| Larry Strope | 106 | 230.0 | 2016 | ||
| Josh Beckett | 106 | 177.7 | 2015 | ||
| Josh Beckett | 106 | 187.3 | 2014 | ||
| Clint Nageotte | 106 | 227.0 | 2011 | ||
| Carlos Zambrano | 106 | 221.3 | 2005 | ||
| Kazuhisa Ishii | 106 | 185.7 | 2005 | ||
| 96. | Rudy Blatt | 105 | 223.0 | 2021 | |
| Albert Zurita | 105 | 170.3 | 2020 | ||
| Carlos Zambrano | 105 | 160.3 | 2019 | ||
| Larry Strope | 105 | 200.3 | 2018 | ||
| Darren Nigro | 105 | 198.0 | 2016 |
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