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Highest strikeout rate vs right-handed batters. Every line below is one player-season against right-handed batters, computed from Retrosheet play-by-play event data (1912-2025). 26,779 player-seasons meet the qualifier; the board shows the all-time top 60 plus the top 20 of every era so each era filter has rows.
Showing 171 of 171 ranked seasons
| # | Player | Year | Team | K rate | AVG vs | K rate | HR | BB | BF |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Eric Gagne | 2003 | LAN | 54.3% | .135 | 54.3% | 1 | 7 | 151 |
| 2 | Devin Williams | 2023 | MIL | 54.0% | .107 | 54.0% | 4 | 10 | 113 |
| 3 | Aroldis Chapman | 2014 | CIN | 50.9% | .118 | 50.9% | 1 | 21 | 159 |
| 4 | Craig Kimbrel | 2012 | ATL | 50.5% | .136 | 50.5% | 2 | 5 | 109 |
| 5 | Brad Lidge | 2004 | HOU | 50.3% | .155 | 50.3% | 5 | 17 | 179 |
| 6 | Kenley Jansen | 2017 | LAN | 49.6% | .120 | 49.6% | 1 | 3 | 129 |
| 7 | Mason Miller | 2025 | SDN | 49.2% | .123 | 49.2% | 1 | 10 | 132 |
| 8 | Kenley Jansen | 2011 | LAN | 48.8% | .156 | 48.8% | 2 | 14 | 125 |
| 9 | Craig Kimbrel | 2017 | BOS | 48.5% | .109 | 48.5% | 2 | 6 | 136 |
| 10 | Sergio Romo | 2011 | SFN | 48.4% | .150 | 48.4% | 1 | 4 | 126 |
| 11 | Edwin Diaz | 2022 | NYN | 47.8% | .202 | 47.8% | 0 | 9 | 136 |
| 12 | Billy Wagner | 1999 | HOU | 47.6% | .131 | 47.6% | 4 | 17 | 233 |
| 13 | Vinnie Pestano | 2011 | CLE | 47.6% | .115 | 47.6% | 2 | 16 | 147 |
| 14 | Kenley Jansen | 2014 | LAN | 47.5% | .169 | 47.5% | 3 | 10 | 141 |
| 15 | Devin Williams | 2021 | MIL | 47.1% | .181 | 47.1% | 1 | 9 | 104 |
| 16 | Takashi Saito | 2007 | LAN | 46.9% | .114 | 46.9% | 1 | 8 | 113 |
| 17 | Devin Williams | 2022 | MIL | 46.8% | .110 | 46.8% | 0 | 20 | 139 |
| 18 | Josh Hader | 2019 | MIL | 46.6% | .158 | 46.6% | 10 | 18 | 223 |
| 19 | Armando Benitez | 1999 | NYN | 46.2% | .127 | 46.2% | 2 | 15 | 173 |
| 20 | Josh Hader | 2018 | MIL | 46.1% | .153 | 46.1% | 8 | 19 | 204 |
| 21 | Kenley Jansen | 2015 | LAN | 46.0% | .151 | 46.0% | 3 | 5 | 100 |
| 22 | Jacob deGrom | 2021 | NYN | 45.8% | .130 | 45.8% | 2 | 5 | 168 |
| 23 | Josh Hader | 2021 | MIL | 45.4% | .125 | 45.4% | 3 | 19 | 174 |
| 24 | Andrew Miller | 2016 | NYA|CLE | 45.3% | .153 | 45.3% | 5 | 8 | 201 |
| 25 | Greg Holland | 2014 | KCA | 45.2% | .160 | 45.2% | 1 | 9 | 104 |
| 26 | Kyle Barraclough | 2016 | MIA | 44.7% | .160 | 44.7% | 0 | 18 | 152 |
| 27 | Brad Boxberger | 2014 | TBA | 44.6% | .198 | 44.6% | 6 | 10 | 130 |
| 28 | Ryan Helsley | 2022 | SLN | 44.6% | .118 | 44.6% | 4 | 12 | 139 |
| 29 | Brad Lidge | 2005 | HOU | 44.5% | .202 | 44.5% | 4 | 12 | 146 |
| 30 | Spencer Strider | 2022 | ATL | 44.2% | .156 | 44.2% | 4 | 25 | 251 |
| 31 | Nick Anderson | 2019 | MIA | 44.0% | .183 | 44.0% | 4 | 7 | 141 |
| 32 | Max Scherzer | 2017 | WAS | 43.9% | .136 | 43.9% | 6 | 17 | 360 |
| 33 | Corey Knebel | 2017 | MIL | 43.6% | .205 | 43.6% | 4 | 17 | 149 |
| 34 | Sergio Santos | 2011 | CHA | 43.5% | .130 | 43.5% | 3 | 12 | 131 |
| 35 | Corey Knebel | 2018 | MIL | 43.5% | .213 | 43.5% | 3 | 10 | 108 |
| 36 | Kenley Jansen | 2013 | LAN | 43.3% | .158 | 43.3% | 5 | 10 | 171 |
| 37 | Aroldis Chapman | 2018 | NYA | 43.3% | .135 | 43.3% | 2 | 23 | 157 |
| 38 | Dave Smith | 1987 | HOU | 43.2% | .158 | 43.2% | 0 | 6 | 111 |
| 39 | Ken Giles | 2019 | TOR | 43.1% | .202 | 43.1% | 1 | 10 | 109 |
| 40 | Felix Bautista | 2023 | BAL | 43.1% | .162 | 43.1% | 2 | 12 | 130 |
| 41 | Francisco Rodriguez | 2004 | ANA | 43.0% | .127 | 43.0% | 1 | 14 | 158 |
| 42 | Aroldis Chapman | 2023 | KCA|TEX | 43.0% | .161 | 43.0% | 4 | 26 | 200 |
| 43 | Robert Stephenson | 2023 | PIT | 43.0% | .143 | 43.0% | 4 | 8 | 128 |
| 44 | Dellin Betances | 2018 | NYA | 42.9% | .175 | 42.9% | 3 | 18 | 161 |
| 45 | Matt Brash | 2023 | SEA | 42.8% | .209 | 42.8% | 1 | 14 | 166 |
| 46 | Tom Gordon | 2001 | CHN | 42.7% | .188 | 42.7% | 3 | 8 | 110 |
| 47 | Pedro Martinez | 1999 | BOS | 42.7% | .187 | 42.7% | 5 | 16 | 386 |
| 48 | Sergio Romo | 2015 | SFN | 42.7% | .170 | 42.7% | 3 | 2 | 150 |
| 49 | Greg Holland | 2013 | KCA | 42.5% | .168 | 42.5% | 1 | 5 | 113 |
| 50 | Jacob deGrom | 2022 | NYN | 42.5% | .184 | 42.5% | 4 | 4 | 120 |
| 51 | Juan Cruz | 2007 | ARI | 42.4% | .143 | 42.4% | 3 | 8 | 125 |
| 52 | Kenley Jansen | 2012 | LAN | 42.3% | .145 | 42.3% | 2 | 11 | 123 |
| 53 | Jose Fernandez | 2016 | MIA | 42.3% | .203 | 42.3% | 5 | 15 | 336 |
| 54 | Kirby Yates | 2019 | SDN | 42.3% | .172 | 42.3% | 0 | 5 | 111 |
| 55 | Andrew Miller | 2017 | CLE | 42.2% | .136 | 42.2% | 2 | 12 | 173 |
| 56 | Wade Davis | 2014 | KCA | 42.2% | .112 | 42.2% | 0 | 6 | 135 |
| 57 | Jacob deGrom | 2020 | NYN | 42.2% | .195 | 42.2% | 3 | 4 | 128 |
| 58 | Tyler Duffey | 2019 | MIN | 42.2% | .205 | 42.2% | 4 | 9 | 128 |
| 59 | Craig Kimbrel | 2011 | ATL | 42.1% | .196 | 42.1% | 2 | 16 | 159 |
| 60 | Jose Alvarado | 2022 | PHI | 41.9% | .188 | 41.9% | 1 | 18 | 148 |
| 61 | Mariano Rivera | 1996 | NYA | 41.7% | .157 | 41.7% | 0 | 14 | 187 |
| 62 | Eric Gagne | 2002 | LAN | 41.6% | .163 | 41.6% | 4 | 5 | 149 |
| 63 | Jose Valverde | 2003 | ARI | 41.2% | .112 | 41.2% | 2 | 18 | 119 |
| 64 | Dennis Eckersley | 1993 | OAK | 41.0% | .190 | 41.0% | 2 | 4 | 134 |
| 65 | Ugueth Urbina | 1998 | MON | 40.4% | .154 | 40.4% | 1 | 12 | 136 |
| 66 | Billy Wagner | 1998 | HOU | 40.4% | .188 | 40.4% | 6 | 18 | 198 |
| 67 | Byung-Hyun Kim | 2000 | ARI | 40.1% | .171 | 40.1% | 6 | 23 | 177 |
| 68 | Ugueth Urbina | 2002 | BOS | 39.8% | .143 | 39.8% | 2 | 6 | 113 |
| 69 | Dwight Gooden | 1984 | NYN | 39.7% | .173 | 39.7% | 3 | 35 | 408 |
| 70 | Dennis Eckersley | 1992 | OAK | 39.5% | .159 | 39.5% | 2 | 3 | 152 |
| 71 | Ugueth Urbina | 1997 | MON | 39.4% | .165 | 39.4% | 5 | 13 | 155 |
| 72 | Eric Gagne | 2004 | LAN | 39.3% | .129 | 39.3% | 3 | 8 | 163 |
| 73 | Randy Johnson | 2001 | ARI | 39.2% | .204 | 39.2% | 18 | 62 | 869 |
| 74 | Bill Risley | 1994 | SEA | 39.0% | .158 | 39.0% | 5 | 8 | 105 |
| 75 | Francisco Rodriguez | 2003 | ANA | 38.8% | .157 | 38.8% | 4 | 11 | 152 |
| 76 | Mike Scott | 1986 | HOU | 38.6% | .157 | 38.6% | 11 | 23 | 498 |
| 77 | Ken Howell | 1984 | LAN | 38.1% | .190 | 38.1% | 1 | 3 | 105 |
| 78 | Tom Henke | 1989 | TOR | 38.0% | .214 | 38.0% | 2 | 9 | 184 |
| 79 | Tom Henke | 1987 | TOR | 37.9% | .204 | 37.9% | 7 | 13 | 182 |
| 80 | Dennis Eckersley | 1991 | OAK | 37.6% | .188 | 37.6% | 6 | 3 | 141 |
| 81 | Rob Dibble | 1990 | CIN | 37.2% | .181 | 37.2% | 2 | 10 | 180 |
| 82 | Dennis Eckersley | 1990 | OAK | 36.4% | .152 | 36.4% | 1 | 2 | 140 |
| 83 | Skip Lockwood | 1975 | NYN | 36.2% | .173 | 36.2% | 3 | 14 | 127 |
| 84 | Ron Davis | 1981 | NYA | 35.9% | .176 | 35.9% | 5 | 12 | 153 |
| 85 | Duane Ward | 1993 | TOR | 35.7% | .176 | 35.7% | 2 | 7 | 140 |
| 86 | Bryan Harvey | 1989 | CAL | 35.2% | .206 | 35.2% | 3 | 20 | 122 |
| 87 | Mark Eichhorn | 1986 | TOR | 34.7% | .135 | 34.7% | 1 | 16 | 323 |
| 88 | Rob Dibble | 1989 | CIN | 34.3% | .167 | 34.3% | 3 | 14 | 201 |
| 89 | Rob Dibble | 1991 | CIN | 34.3% | .258 | 34.3% | 3 | 11 | 143 |
| 90 | Rob Dibble | 1992 | CIN | 34.3% | .207 | 34.3% | 1 | 9 | 134 |
| 91 | Dick Radatz | 1963 | BOS | 34.1% | .191 | 34.1% | 6 | 27 | 314 |
| 92 | Nolan Ryan | 1990 | TEX | 34.1% | .158 | 34.1% | 10 | 31 | 410 |
| 93 | Rich Gossage | 1982 | NYA | 34.0% | .183 | 34.0% | 3 | 9 | 200 |
| 94 | Skip Lockwood | 1976 | NYN | 32.8% | .112 | 32.8% | 3 | 14 | 204 |
| 95 | Dick Radatz | 1964 | BOS | 32.7% | .185 | 32.7% | 7 | 26 | 367 |
| 96 | Tom Seaver | 1971 | NYN | 31.9% | .183 | 31.9% | 13 | 35 | 542 |
| 97 | Pete Richert | 1970 | BAL | 31.5% | .183 | 31.5% | 3 | 17 | 130 |
| 98 | Ryne Duren | 1960 | NYA | 31.1% | .139 | 31.1% | 2 | 30 | 161 |
| 99 | Nolan Ryan | 1973 | CAL | 31.1% | .204 | 31.1% | 12 | 83 | 726 |
| 100 | Roger Nelson | 1968 | BAL | 31.1% | .168 | 31.1% | 3 | 13 | 151 |
| 101 | Bob Feller | 1936 | CLE | 30.8% | .217 | 30.8% | 0 | 27 | 182 |
| 102 | John Hiller | 1975 | DET | 30.3% | .193 | 30.3% | 6 | 29 | 228 |
| 103 | Rollie Fingers | 1972 | OAK | 30.3% | .184 | 30.3% | 8 | 19 | 271 |
| 104 | Jim York | 1971 | KCA | 30.3% | .186 | 30.3% | 3 | 20 | 264 |
| 105 | Moe Drabowsky | 1967 | BAL | 30.1% | .182 | 30.1% | 2 | 10 | 196 |
| 106 | Moe Drabowsky | 1966 | BAL | 30.0% | .170 | 30.0% | 6 | 15 | 243 |
| 107 | Dick Radatz | 1962 | BOS | 30.0% | .212 | 30.0% | 5 | 22 | 300 |
| 108 | Masanori Murakami | 1965 | SFN | 29.8% | .183 | 29.8% | 5 | 16 | 198 |
| 109 | Nolan Ryan | 1972 | CAL | 29.8% | .161 | 29.8% | 4 | 82 | 644 |
| 110 | Luis Tiant | 1967 | CLE | 29.5% | .210 | 29.5% | 13 | 33 | 458 |
| 111 | Dennis Eckersley | 1976 | CLE | 29.5% | .156 | 29.5% | 7 | 39 | 421 |
| 112 | Pedro Ramos | 1963 | CLE | 29.1% | .207 | 29.1% | 17 | 20 | 444 |
| 113 | Bobby Bolin | 1961 | SFN | 29.0% | .123 | 29.0% | 1 | 17 | 131 |
| 114 | Sandy Koufax | 1959 | LAN | 28.2% | .238 | 28.2% | 19 | 66 | 511 |
| 115 | Ryne Duren | 1959 | NYA | 28.0% | .178 | 28.0% | 3 | 16 | 193 |
| 116 | Sandy Koufax | 1957 | BRO | 27.9% | .203 | 27.9% | 7 | 36 | 319 |
| 117 | Don Drysdale | 1960 | LAN | 27.8% | .186 | 27.8% | 12 | 29 | 565 |
| 118 | Ryne Duren | 1958 | NYA | 27.7% | .138 | 27.7% | 4 | 27 | 195 |
| 119 | Sam Jones | 1956 | CHN | 27.1% | .190 | 27.1% | 10 | 51 | 428 |
| 120 | Herb Score | 1958 | CLE | 27.0% | .197 | 27.0% | 1 | 29 | 152 |
| 121 | Bob Blaylock | 1956 | SLN | 25.9% | .265 | 25.9% | 3 | 11 | 116 |
| 122 | Ron Piche | 1960 | ML1 | 25.9% | .220 | 25.9% | 2 | 10 | 116 |
| 123 | Bob Feller | 1937 | CLE | 25.7% | .194 | 25.7% | 3 | 62 | 385 |
| 124 | Don Elston | 1958 | CHN | 25.6% | .173 | 25.6% | 7 | 25 | 258 |
| 125 | Hal Newhouser | 1946 | DET | 25.4% | .188 | 25.4% | 8 | 50 | 755 |
| 126 | Don Drysdale | 1959 | LAN | 25.2% | .210 | 25.2% | 15 | 46 | 623 |
| 127 | Bob Feller | 1946 | CLE | 25.0% | .207 | 25.0% | 2 | 53 | 641 |
| 128 | Herb Score | 1957 | CLE | 24.8% | .125 | 24.8% | 0 | 23 | 113 |
| 129 | Bob Turley | 1953 | SLA | 24.7% | .162 | 24.7% | 3 | 21 | 154 |
| 130 | Don Elston | 1959 | CHN | 24.5% | .210 | 24.5% | 7 | 22 | 253 |
| 131 | Dazzy Vance | 1924 | BRO | 24.3% | .190 | 24.3% | 6 | 34 | 720 |
| 132 | Herb Score | 1956 | CLE | 24.3% | .196 | 24.3% | 15 | 103 | 845 |
| 133 | Herb Score | 1955 | CLE | 24.1% | .196 | 24.1% | 14 | 113 | 791 |
| 134 | Sandy Koufax | 1960 | LAN | 23.9% | .218 | 23.9% | 17 | 74 | 598 |
| 135 | Van Mungo | 1936 | BRO | 23.0% | .223 | 23.0% | 2 | 41 | 639 |
| 136 | Joe Krakauskas | 1938 | WS1 | 23.0% | .188 | 23.0% | 4 | 51 | 270 |
| 137 | Whit Wyatt | 1930 | DET | 22.5% | .230 | 22.5% | 4 | 18 | 213 |
| 138 | Johnny Vander Meer | 1941 | CIN | 22.3% | .208 | 22.3% | 4 | 71 | 701 |
| 139 | Walter Johnson | 1912 | WS1 | 21.6% | .176 | 21.6% | 1 | 32 | 833 |
| 140 | Bob Feller | 1940 | CLE | 21.2% | .197 | 21.2% | 7 | 62 | 744 |
| 141 | Bob Feller | 1938 | CLE | 21.1% | .232 | 21.1% | 10 | 121 | 674 |
| 142 | Wilbur Cooper | 1912 | PIT | 20.9% | .224 | 20.9% | 1 | 11 | 110 |
| 143 | Walter Johnson | 1913 | WS1 | 20.9% | .198 | 20.9% | 3 | 11 | 683 |
| 144 | Smoky Joe Wood | 1913 | BOS | 20.9% | .221 | 20.9% | 0 | 25 | 325 |
| 145 | Johnny Allen | 1935 | NYA | 20.8% | .235 | 20.8% | 6 | 34 | 409 |
| 146 | Bob Feller | 1939 | CLE | 20.7% | .199 | 20.7% | 4 | 73 | 695 |
| 147 | Dazzy Vance | 1926 | BRO | 20.6% | .287 | 20.6% | 2 | 27 | 354 |
| 148 | Smoky Joe Wood | 1912 | BOS | 20.3% | .203 | 20.3% | 0 | 38 | 857 |
| 149 | Van Mungo | 1937 | BRO | 20.3% | .206 | 20.3% | 3 | 29 | 340 |
| 150 | Herb Pennock | 1912 | PHA | 19.9% | .275 | 19.9% | 0 | 17 | 161 |
| 151 | Dazzy Vance | 1928 | BRO | 19.9% | .203 | 19.9% | 7 | 37 | 715 |
| 152 | Walter Johnson | 1926 | WS1 | 19.8% | .216 | 19.8% | 3 | 25 | 516 |
| 153 | Dazzy Vance | 1925 | BRO | 19.7% | .249 | 19.7% | 3 | 41 | 618 |
| 154 | Joe Heving | 1931 | NY1 | 19.7% | .224 | 19.7% | 1 | 6 | 117 |
| 155 | Walter Johnson | 1924 | WS1 | 19.5% | .188 | 19.5% | 4 | 23 | 575 |
| 156 | Dutch Leonard | 1914 | BOS | 19.3% | .189 | 19.3% | 3 | 40 | 590 |
| 157 | Dazzy Vance | 1927 | BRO | 19.3% | .229 | 19.3% | 8 | 30 | 592 |
| 158 | Syl Johnson | 1928 | SLN | 19.3% | .224 | 19.3% | 1 | 16 | 270 |
| 159 | Pete Alexander | 1912 | PHI | 19.0% | .235 | 19.0% | 5 | 50 | 695 |
| 160 | Vean Gregg | 1912 | CLE | 19.0% | .232 | 19.0% | 3 | 62 | 781 |
| 161 | Guy Morton | 1914 | CLE | 18.4% | .244 | 18.4% | 1 | 25 | 326 |
| 162 | Carl Weilman | 1912 | SLA | 18.2% | .157 | 18.2% | 0 | 2 | 132 |
| 163 | Walter Johnson | 1916 | WS1 | 17.9% | .188 | 17.9% | 0 | 21 | 697 |
| 164 | Willie Mitchell | 1914 | CLE | 17.7% | .230 | 17.7% | 1 | 81 | 740 |
| 165 | Willie Mitchell | 1915 | CLE | 17.5% | .229 | 17.5% | 1 | 59 | 661 |
| 166 | Red Faber | 1915 | CHA | 17.5% | .196 | 17.5% | 0 | 32 | 605 |
| 167 | Carmen Hill | 1915 | PIT | 17.5% | .243 | 17.5% | 0 | 6 | 126 |
| 168 | Pete Alexander | 1915 | PHI | 17.4% | .174 | 17.4% | 2 | 33 | 892 |
| 169 | Walter Johnson | 1915 | WS1 | 17.4% | .193 | 17.4% | 1 | 12 | 662 |
| 170 | Walter Johnson | 1917 | WS1 | 17.4% | .196 | 17.4% | 0 | 18 | 651 |
| 171 | Tom Hughes | 1917 | BSN | 17.4% | .171 | 17.4% | 0 | 10 | 184 |
Single seasons with 100+ batters faced vs right-handed batters (event-derived Retrosheet splits).
The splits come from Retrosheet play-by-play event data, aggregated per player, season and opposing hand. Rates are the plain formulas computed from the split counts themselves: AVG is hits per at-bat, OBP is (H+BB+HBP)/(AB+BB+HBP+SF), SLG is total bases per at-bat. The OPS boards rank by split OPS+, normalized against what the player's league hit against that same hand that season (the same recipe as our position leaderboards, applied to splits; never park-adjusted). Rate boards rank raw rates, so compare across eras using the era filter.
Split leaderboards have no official qualification rule, so the qualifiers are ours and disclosed on every board: 100 PA vs left-handed pitching (200 vs right-handed) for hitter rate boards, 10 HR vs the hand for home-run boards, and 100 batters faced vs the hand for pitcher boards. Players whose careers fall outside 1912-2025 coverage have no split lines anywhere on this site.
Browse every board on the platoon split leaderboard hub, or see a player's own career and season splits on their career page.