| Year | National League Season Leaders | ||||||||
| ERA | Wins | Strikeouts | Saves | ||||||
| 1960 | Odell-SF | 2.55 | Friend-Pit | 20 | Drysdale-LA | 262 | McDaniel-StL | 29 | |
| 1961 | Spahn-Mil | 2.69 | Spahn-Mil | 18 | Koufax-LA | 289 | 2 Tied[1] | 32 | |
| 1962 | Drysdale-LA | 2.23 | Marichal-SF | 24 | Drysdale-LA (2) | 251 | Miller-SF | 23 | |
| 1963 | Friend-Pit | 2.15 | Marichal-SF | 26 | Koufax-LA | 309 | Shantz-StL | 22 | |
| 1964 | Short-Phi | 2.34 | Jackson-Chi | 23 | Veale-Pit | 254 | Shaw-SF | 24 | |
| 1965 | Marichal-SF | 2.27 | Drysdale-LA | 23 | Koufax-LA | 395 | McBean-Pit | 32 | |
| 1966 | Cuellar-Hou | 2.10 | 2 Tied[2] | 22 | Koufax-LA (4) | 316 | Linzy-SF | 21 | |
| 1967 | P Niekro-Atl | 1.93 | 2 Tied[3] | 22 | Bunning-Phi | 274 | Abernathy-Cin | 27 | |
| 1969 | P Niekro-Atl (2) | 2.01 | 2 Tied[4] | 22 | Jenkins-Chi | 278 | 3 Tied[5] | 24 | |
| 1970 | 2 Tied[6] | 2.52 | Jenkins-Chi | 24 | Seaver-NY | 260 | Herbel | 27 | |
| 1971 | Sutton-LA | 1.87 | Jenkins-Chi (3) | 28 | Jenkins-Chi (2) | 272 | Brewer-LA | 24 | |
| 1972 | Sutton-LA | 2.26 | Carlton-Phi | 21 | Carlton-Phi | 279 | Carroll-Cin | 29 | |
| 1973 | Sutton-LA | 1.65 | Sutton-LA | 24 | Seaver-NY (2) | 241 | Guisti-Pit | 24 | |
| 1980 | Rogers-Mon | 2.06 | Rogers-Mon | 23 | Carlton-Phi | 266 | Fingers-SD | 34 | |
| 1982 | Show-SD | 2.09 | Valenzuela-LA | 21 | Carlton-Phi (3) | 277 | Sutter-StL | 36 | |
| 1985 | Hershiser-LA | 1.57 | Tudor-StL | 22 | Gooden-NY | 270 | Reardon-Mon | 30 | |
| 1986 | Fernandez-NY | 2.30 | Scott-Hou | 24 | Scott-Hou | 339 | Franco-Cin | 40 | |
| 1987 | Magrane-StL | 2.15 | 2 Tied[7] | 18 | Ryan-Hou | 304 | 2 Tied[8] | 34 | |
| 1990 | Tudor-StL | 2.19 | Browning-Cin | 20 | Gooden-NY (2) | 251 | Myers-Cin | 39 | |
| 2004 | Peavy-SD | 2.52 | Peavy-SD | 21 | Sheets-Mil | 297 | Isringhausen-StL | 40 | |
| 2005 | Martinez-NY | 1.98 | 6 Tied[9] | 17 | Myers-Phi | 241 | Turnbow-Mil | 40 | |
| 2006 | Carpenter-StL | 3.20 | Francis-Col | 21 | Harang-Cin | 262 | Fuentes-Col | 40 | |
| 2007 | Billingsley-LA | 2.29 | 2 Tied[10] | 18 | Peavy-SD | 278 | Saito-LA | 36 | |
| 2008 | Santana-NY | 2.36 | Lilly-Chi | 19 | Lincecum-SF | 287 | 3 Tied[11] | 30 | |
| 2009 | Lincecum-SF | 2.05 | Johnson-Fla | 20 | Lincecum-SF | 272 | Franklin-StL | 37 | |
| 2010 | Hansen-Atl | 2.47 | Wainwright-StL | 21 | Lincecum-SF (3) | 251 | Wagner-Atl | 48 | |
| 2011 | Halladay-Phi | 2.05 | Halladay-Phi | 21 | Lee-Phi | 279 | Bell-SD | 46 | |
| 2012 | Kershaw-LA | 1.92 | Lohse-StL | 24 | Kershaw-LA | 247 | Kimbrel-Atl | 56 | |
| 2013 | Harvey-NY | 1.69 | Stults-SD | 21 | Lee-Phi (2) | 260 | Kimbrel-Atl | 45 | |
| 2014 | Wainwright-StL | 1.52 | Cueto-Cin | 20 | Bumgarner-SF | 268 | Kimbrel-Atl (3) | 52 | |
| 2015 | Greinke-LA | 1.79 | 3 Tied[12] | 20 | Kershaw-LA (2) | 311 | Rosenthal-StL | 40 | |
| 2016 | Kershaw-LA(2) | 1.57 | Roark-Was | 18 | Scherzer-Was | 296 | Familia-NY | 38 | |
| 2017 | Wood-LA | 1.68 | Greinke-Ari (2) | 20 | Scherzer-Was | 279 | Jansen-LA | 46 | |
| 2018 | DeGrom-NYM | 1.50 | Freeland-Col | 20 | Scherzer-Was (3) | 315 | Vazquez-Pit | 37 | |
| 2019 | Buehler-LA | 2.45 | Buehler-LA | 25 | Ray-Ari | 278 | Jansen-LA (2) | 43 | |
| 2020 | Bauer-Cin | 1.50 | 2 Tied[13] | 9 | DeGrom-NY | 136 | Hader-Mil | 19 | |