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Single-Season Leaders & Records for Strikeouts/9IP
Baseball Leaders & Baseball Records:
Single-Season
Career
Active
Progressive
Year-by-Year League
Click on the Player for career stats and accomplishments.
+ - Indicates Hall of Famer. Bold indicates active player
* - throws left-handed, ? - unknown, else - throws right-handed
Only players who finished in the top 40 for the majors in a season will appear on this list. Leaders from the current season are only included for rate stats after July 1st.
Minimum of 3.1 PA/G, 1.0 IP/G, and 0.1 decision/G for single-season leaderboards generally needed for rate statistics. Explanation of min. requirements
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 1. | Randy Johnson* (37) | 13.410 | 2001 | L |
| 2. | Pedro Martinez (27) | 13.205 | 1999 | R |
| 3. | Kerry Wood (21) | 12.582 | 1998 | R |
| 4. | Randy Johnson* (36) | 12.559 | 2000 | L |
| 5. | Randy Johnson* (31) | 12.345 | 1995 | L |
| 6. | Randy Johnson* (33) | 12.296 | 1997 | L |
| 7. | Randy Johnson* (34) | 12.119 | 1998 | L |
| 8. | Randy Johnson* (35) | 12.059 | 1999 | L |
| 9. | Pedro Martinez (28) | 11.779 | 2000 | R |
| 10. | Randy Johnson* (38) | 11.562 | 2002 | L |
| 11. | Nolan Ryan+ (40) | 11.480 | 1987 | R |
| 12. | Dwight Gooden (19) | 11.394 | 1984 | R |
| 13. | Pedro Martinez (25) | 11.374 | 1997 | R |
| 14. | Kerry Wood (26) | 11.346 | 2003 | R |
| 15. | Nolan Ryan+ (42) | 11.319 | 1989 | R |
| 16. | Curt Schilling (30) | 11.288 | 1997 | R |
| 17. | Kerry Wood (24) | 11.203 | 2001 | R |
| 18. | Hideo Nomo (26) | 11.101 | 1995 | R |
| 19. | Oliver Perez* (22) | 10.974 | 2004 | L |
| 20. | Curt Schilling (35) | 10.967 | 2002 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 21. | Erik Bedard* (28) | 10.929 | 2007 | L |
| 22. | Randy Johnson* (29) | 10.856 | 1993 | L |
| 23. | Pedro Martinez (30) | 10.791 | 2002 | R |
| 24. | Sam McDowell* (22) | 10.714 | 1965 | L |
| 25. | Randy Johnson* (30) | 10.674 | 1994 | L |
| 26. | Randy Johnson* (40) | 10.624 | 2004 | L |
| 27. | Nolan Ryan+ (26) | 10.574 | 1973 | R |
| 28. | Nolan Ryan+ (44) | 10.561 | 1991 | R |
| 29. | Sandy Koufax+* (26) | 10.546 | 1962 | L |
| 30. | Johan Santana* (25) | 10.461 | 2004 | L |
| 31. | Mark Prior (22) | 10.434 | 2003 | R |
| 32. | Nolan Ryan+ (25) | 10.426 | 1972 | R |
| 33. | Sam McDowell* (23) | 10.420 | 1966 | L |
| 34. | Scott Kazmir* (23) | 10.408 | 2007 | L |
| 35. | Roger Clemens (35) | 10.393 | 1998 | R |
| Curt Schilling (36) | 10.393 | 2003 | R | |
| 37. | Nolan Ryan+ (29) | 10.351 | 1976 | R |
| 38. | Randy Johnson* (28) | 10.312 | 1992 | L |
| 39. | Curt Schilling (34) | 10.274 | 2001 | R |
| 40. | Nolan Ryan+ (30) | 10.264 | 1977 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 41. | David Cone (34) | 10.246 | 1997 | R |
| 42. | Sandy Koufax+* (29) | 10.242 | 1965 | L |
| 43. | Nolan Ryan+ (43) | 10.235 | 1990 | R |
| 44. | Randy Johnson* (27) | 10.192 | 1991 | L |
| 45. | Mark Prior (24) | 10.152 | 2005 | R |
| 46. | Bartolo Colon (27) | 10.149 | 2000 | R |
| 47. | Sandy Koufax+* (24) | 10.131 | 1960 | L |
| 48. | Hideo Nomo (28) | 10.114 | 1997 | R |
| 49. | Curt Schilling (31) | 10.050 | 1998 | R |
| 50. | Jason Schmidt (31) | 10.040 | 2004 | R |
| 51. | Ben Sheets (25) | 10.025 | 2004 | R |
| 52. | Mike Scott (31) | 10.002 | 1986 | R |
| 53. | Hideo Nomo (32) | 10.000 | 2001 | R |
| 54. | Rick Ankiel* (20) | 9.977 | 2000 | L |
| 55. | Nolan Ryan+ (31) | 9.972 | 1978 | R |
| 56. | Roger Clemens (34) | 9.955 | 1997 | R |
| 57. | Pedro Martinez (31) | 9.932 | 2003 | R |
| 58. | Nolan Ryan+ (27) | 9.929 | 1974 | R |
| 59. | Roger Clemens (25) | 9.920 | 1988 | R |
| 60. | David Cone (27) | 9.907 | 1990 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 61. | J.R. Richard (28) | 9.904 | 1978 | R |
| 62. | Andy Benes (26) | 9.870 | 1994 | R |
| 63. | Chad Billingsley (23) | 9.811 | 2008 | R |
| 64. | Nolan Ryan+ (39) | 9.809 | 1986 | R |
| 65. | John Smoltz (29) | 9.792 | 1996 | R |
| 66. | Herb Score* (22) | 9.699 | 1955 | L |
| 67. | Jake Peavy (26) | 9.672 | 2007 | R |
| 68. | Pedro Martinez (26) | 9.668 | 1998 | R |
| 69. | Johan Santana* (28) | 9.658 | 2007 | L |
| 70. | Nolan Ryan+ (37) | 9.653 | 1984 | R |
| 71. | J.R. Richard (29) | 9.636 | 1979 | R |
| 72. | Roger Clemens (39) | 9.600 | 2002 | R |
| 73. | Jake Peavy (24) | 9.576 | 2005 | R |
| 74. | Mario Soto (25) | 9.570 | 1982 | R |
| 75. | Jake Peavy (25) | 9.563 | 2006 | R |
| 76. | A.J. Burnett (30) | 9.561 | 2007 | R |
| 77. | Tom Griffin (21) | 9.558 | 1969 | R |
| 78. | Roger Clemens (33) | 9.532 | 1996 | R |
| 79. | Jim Maloney (23) | 9.527 | 1963 | R |
| 80. | Jason Schmidt (29) | 9.518 | 2002 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 81. | Jonathan Sanchez* (25) | 9.516 | 2008 | L |
| 82. | Sid Fernandez* (22) | 9.511 | 1985 | L |
| 83. | Herb Score* (23) | 9.493 | 1956 | L |
| 84. | Tim Lincecum (24) | 9.486 | 2008 | R |
| 85. | Sandy Koufax+* (25) | 9.469 | 1961 | L |
| 86. | Sam McDowell* (25) | 9.468 | 1968 | L |
| 87. | Edinson Volquez (24) | 9.465 | 2008 | R |
| 88. | Matt Clement (29) | 9.448 | 2004 | R |
| 89. | Matt Clement (27) | 9.439 | 2002 | R |
| 90. | Johan Santana* (27) | 9.437 | 2006 | L |
| 91. | Pedro Martinez (32) | 9.415 | 2004 | R |
| 92. | David Cone (29) | 9.409 | 1992 | R |
| 93. | Frank Tanana* (21) | 9.408 | 1975 | L |
| 94. | Javier Vazquez (26) | 9.403 | 2003 | R |
| 95. | Don Wilson (24) | 9.400 | 1969 | R |
| 96. | Jake Peavy (23) | 9.361 | 2004 | R |
| 97. | Bob Veale* (29) | 9.338 | 1965 | L |
| 98. | Nolan Ryan+ (41) | 9.327 | 1988 | R |
| 99. | David Cone (28) | 9.322 | 1991 | R |
| 100. | John Smoltz (31) | 9.286 | 1998 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 101. | Johan Santana* (26) | 9.246 | 2005 | L |
| 102. | Luis Tiant (26) | 9.225 | 1967 | R |
| 103. | Hideo Nomo (27) | 9.223 | 1996 | R |
| 104. | Pedro Martinez (24) | 9.222 | 1996 | R |
| 105. | Brandon Duckworth (26) | 9.221 | 2002 | R |
| 106. | Mark Langston* (25) | 9.213 | 1986 | L |
| 107. | Luis Tiant (27) | 9.197 | 1968 | R |
| 108. | Dave Boswell (21) | 9.195 | 1966 | R |
| 109. | Sam McDowell* (21) | 9.190 | 1964 | L |
| 110. | Roger Clemens (41) | 9.154 | 2004 | R |
| 111. | Kerry Wood (25) | 9.140 | 2002 | R |
| 112. | Sonny Siebert (28) | 9.111 | 1965 | R |
| 113. | Sid Fernandez* (25) | 9.096 | 1988 | L |
| 114. | Orlando Hernandez (40) | 9.092 | 2006 | R |
| 115. | Sid Fernandez* (27) | 9.084 | 1990 | L |
| Tom Seaver+ (26) | 9.084 | 1971 | R | |
| 117. | David Cone (35) | 9.058 | 1998 | R |
| 118. | Dennis Eckersley+ (21) | 9.030 | 1976 | R |
| 119. | John Smoltz (28) | 9.016 | 1995 | R |
| 120. | Jason Schmidt (30) | 9.014 | 2003 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 121. | Nolan Ryan+ (32) | 9.013 | 1979 | R |
| 122. | Kevin Brown (33) | 9.000 | 1998 | R |
| A.J. Burnett (31) | 9.000 | 2008 | R | |
| Darryl Kile (27) | 9.000 | 1996 | R | |
| Sandy Koufax+* (28) | 9.000 | 1964 | L | |
| 126. | Sam McDowell* (24) | 8.987 | 1967 | L |
| 127. | Sam McDowell* (27) | 8.970 | 1970 | L |
| 128. | Bobby Witt (26) | 8.959 | 1990 | R |
| 129. | A.J. Burnett (25) | 8.941 | 2002 | R |
| 130. | Curt Schilling (29) | 8.935 | 1996 | R |
| 131. | Jose Rijo (29) | 8.930 | 1994 | R |
| Javier Vazquez (31) | 8.930 | 2008 | R | |
| 133. | C.C. Sabathia* (27) | 8.923 | 2008 | L |
| 134. | Jim Maloney (24) | 8.917 | 1964 | R |
| 135. | Andy Benes (29) | 8.898 | 1997 | R |
| 136. | Kent Mercker* (26) | 8.893 | 1994 | L |
| 137. | Jose Rijo (23) | 8.889 | 1988 | R |
| 138. | Roger Clemens (31) | 8.859 | 1994 | R |
| 139. | Sandy Koufax+* (27) | 8.855 | 1963 | L |
| 140. | Javier Vazquez (30) | 8.848 | 2007 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 141. | Pedro Astacio (30) | 8.847 | 2000 | R |
| Oliver Perez* (25) | 8.847 | 2007 | L | |
| 143. | Daisuke Matsuzaka (26) | 8.839 | 2007 | R |
| 144. | Pedro Martinez (22) | 8.834 | 1994 | R |
| 145. | Sandy Koufax+* (30) | 8.833 | 1966 | L |
| 146. | Carlos Zambrano (25) | 8.832 | 2006 | R |
| 147. | Kevin Appier (28) | 8.815 | 1996 | R |
| 148. | Sam McDowell* (26) | 8.811 | 1969 | L |
| 149. | Sid Fernandez* (23) | 8.809 | 1986 | L |
| 150. | Nolan Ryan+ (35) | 8.808 | 1982 | R |
| 151. | Todd Stottlemyre (30) | 8.800 | 1995 | R |
| 152. | Jake Peavy (27) | 8.777 | 2008 | R |
| 153. | Tom Seaver+ (25) | 8.763 | 1970 | R |
| 154. | Al Downing* (22) | 8.761 | 1963 | L |
| 155. | Bob Moose (21) | 8.735 | 1969 | R |
| 156. | Mike Mussina (28) | 8.733 | 1997 | R |
| 157. | Steve Carlton+* (38) | 8.725 | 1983 | L |
| 158. | Dwight Gooden (20) | 8.718 | 1985 | R |
| 159. | Steve Carlton+* (37) | 8.706 | 1982 | L |
| 160. | Josh Beckett (27) | 8.701 | 2007 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 161. | Roger Clemens (38) | 8.700 | 2001 | R |
| 162. | Brett Myers (24) | 8.694 | 2005 | R |
| 163. | Juan Pizarro* (24) | 8.692 | 1961 | L |
| 164. | Mickey Lolich* (28) | 8.690 | 1969 | L |
| 165. | Cole Hamels* (23) | 8.689 | 2007 | L |
| 166. | Chris Young (28) | 8.688 | 2007 | R |
| 167. | Vida Blue* (21) | 8.683 | 1971 | L |
| 168. | Hugh Daily (36) | 8.682 | 1884 | R |
| 169. | Mark Langston* (26) | 8.669 | 1987 | L |
| 170. | Bob Johnson (27) | 8.664 | 1970 | R |
| 171. | Al Leiter* (34) | 8.654 | 2000 | L |
| 172. | Jim Maloney (26) | 8.653 | 1966 | R |
| 173. | Chuck Finley* (32) | 8.645 | 1995 | L |
| 174. | Chan Ho Park (27) | 8.642 | 2000 | R |
| 175. | Jason Schmidt (32) | 8.634 | 2005 | R |
| 176. | Pedro Martinez (33) | 8.627 | 2005 | R |
| 177. | Dwight Gooden (25) | 8.626 | 1990 | R |
| 178. | Jeff Fassero* (33) | 8.624 | 1996 | L |
| 179. | Bruce Hurst* (28) | 8.621 | 1986 | L |
| John Smoltz (40) | 8.621 | 2007 | R | |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 181. | Barry Zito* (23) | 8.608 | 2001 | L |
| 182. | Mario Soto (23) | 8.606 | 1980 | R |
| 183. | Jim Maloney (25) | 8.601 | 1965 | R |
| 184. | Brett Myers (25) | 8.591 | 2006 | R |
| 185. | Ervin Santana (25) | 8.582 | 2008 | R |
| 186. | Hideo Nomo (31) | 8.574 | 2000 | R |
| 187. | Matt Cain (23) | 8.569 | 2008 | R |
| John Lackey (26) | 8.569 | 2005 | R | |
| 189. | Brandon Webb (24) | 8.568 | 2003 | R |
| 190. | Ramon Martinez (22) | 8.565 | 1990 | R |
| 191. | Tom Seaver+ (27) | 8.553 | 1972 | R |
| 192. | Dick Selma (25) | 8.544 | 1969 | R |
| 193. | Chuck Finley* (35) | 8.543 | 1998 | L |
| 194. | C.C. Sabathia* (20) | 8.534 | 2001 | L |
| 195. | A.J. Burnett (28) | 8.526 | 2005 | R |
| 196. | Robert Person (30) | 8.515 | 2000 | R |
| 197. | Chuck Finley* (34) | 8.506 | 1997 | L |
| 198. | Jeremy Bonderman (23) | 8.495 | 2006 | R |
| Bob Veale* (33) | 8.495 | 1969 | L | |
| 200. | Sterling Hitchcock* (28) | 8.489 | 1999 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 201. | Randy Johnson* (44) | 8.486 | 2008 | L |
| 202. | John Maine (26) | 8.482 | 2007 | R |
| 203. | Steve Carlton+* (36) | 8.479 | 1981 | L |
| 204. | Josh Beckett (28) | 8.475 | 2008 | R |
| 205. | John Smoltz (30) | 8.473 | 1997 | R |
| 206. | Andy Benes (27) | 8.472 | 1995 | R |
| 207. | Aaron Harang (29) | 8.469 | 2007 | R |
| 208. | Dave Burba (33) | 8.467 | 2000 | R |
| Steve Carlton+* (35) | 8.467 | 1980 | L | |
| Mike Scott (32) | 8.467 | 1987 | R | |
| 211. | Mark Langston* (28) | 8.460 | 1989 | L |
| 212. | Floyd Bannister* (30) | 8.459 | 1985 | L |
| 213. | Hal Newhouser+* (25) | 8.457 | 1946 | L |
| 214. | Nolan Ryan+ (34) | 8.456 | 1981 | R |
| 215. | Nolan Ryan+ (28) | 8.455 | 1975 | R |
| 216. | Kevin Brown (35) | 8.452 | 2000 | R |
| 217. | Matt Cain (21) | 8.449 | 2006 | R |
| 218. | Tom Gordon (21) | 8.448 | 1989 | R |
| 219. | Rich Hill* (27) | 8.446 | 2007 | L |
| 220. | Chuck Finley* (36) | 8.438 | 1999 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 221. | Bob Feller+ (27) | 8.434 | 1946 | R |
| 222. | Roger Clemens (23) | 8.433 | 1986 | R |
| 223. | Mike Mussina (32) | 8.423 | 2001 | R |
| Fernando Valenzuela* (20) | 8.423 | 1981 | L | |
| 225. | Kevin Appier (26) | 8.419 | 1994 | R |
| Scott Kazmir* (21) | 8.419 | 2005 | L | |
| 227. | Ted Lilly* (32) | 8.416 | 2008 | L |
| 228. | Randy Johnson* (41) | 8.415 | 2005 | L |
| Kevin Millwood (23) | 8.415 | 1998 | R | |
| 230. | Ed Correa (20) | 8.407 | 1986 | R |
| Doug Davis* (29) | 8.407 | 2005 | L | |
| 232. | Darren Dreifort (26) | 8.400 | 1998 | R |
| 233. | Sam Jones (30) | 8.396 | 1956 | R |
| 234. | John Patterson (27) | 8.395 | 2005 | R |
| 235. | Randy Wolf* (24) | 8.393 | 2001 | L |
| 236. | Nolan Ryan+ (36) | 8.389 | 1983 | R |
| Rube Waddell+* (26) | 8.389 | 1903 | L | |
| 238. | Bob Gibson+ (34) | 8.388 | 1970 | R |
| 239. | Chan Ho Park (28) | 8.385 | 2001 | R |
| 240. | Jason Bere (30) | 8.378 | 2001 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 241. | Javier Vazquez (24) | 8.370 | 2001 | R |
| 242. | Josh Beckett (25) | 8.362 | 2005 | R |
| 243. | Al Leiter* (30) | 8.359 | 1996 | L |
| 244. | Mickey Lolich* (24) | 8.347 | 1965 | L |
| 245. | Don Sutton+ (21) | 8.335 | 1966 | R |
| 246. | Shane Reynolds (27) | 8.319 | 1995 | R |
| 247. | Ryan Dempster (23) | 8.311 | 2000 | R |
| 248. | Jose DeLeon (27) | 8.308 | 1988 | R |
| 249. | Floyd Youmans (22) | 8.301 | 1986 | R |
| 250. | Aaron Harang (28) | 8.296 | 2006 | R |
| 251. | Felix Hernandez (20) | 8.293 | 2006 | R |
| 252. | Jim Bunning+ (33) | 8.289 | 1965 | R |
| 253. | David Cone (25) | 8.287 | 1988 | R |
| 254. | Todd Stottlemyre (33) | 8.283 | 1998 | R |
| 255. | Roger Clemens (37) | 8.281 | 2000 | R |
| 256. | Felix Hernandez (22) | 8.280 | 2008 | R |
| 257. | Fernando Valenzuela* (23) | 8.276 | 1984 | L |
| 258. | Kevin Appier (27) | 8.270 | 1995 | R |
| 259. | Scott Olsen* (22) | 8.269 | 2006 | L |
| 260. | Johnny Cueto (22) | 8.268 | 2008 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 261. | Teddy Higuera* (28) | 8.255 | 1987 | L |
| 262. | Kelvim Escobar (28) | 8.251 | 2004 | R |
| 263. | Dave Boswell (22) | 8.246 | 1967 | R |
| 264. | Jose DeLeon (24) | 8.244 | 1985 | R |
| 265. | David Cone (36) | 8.240 | 1999 | R |
| 266. | Roger Clemens (27) | 8.238 | 1990 | R |
| 267. | Pedro Ramos (28) | 8.236 | 1963 | R |
| 268. | Herb Score* (26) | 8.234 | 1959 | L |
| 269. | Jon Lieber (29) | 8.233 | 1999 | R |
| 270. | Esteban Loaiza (31) | 8.231 | 2003 | R |
| 271. | Don Drysdale+ (23) | 8.230 | 1960 | R |
| Chris Young (27) | 8.230 | 2006 | R | |
| 273. | Mark Langston* (33) | 8.221 | 1994 | L |
| 274. | Juan Guzman (25) | 8.220 | 1992 | R |
| 275. | Jeremy Bonderman (21) | 8.217 | 2004 | R |
| Hideo Nomo (30) | 8.217 | 1999 | R | |
| 277. | Chuck Finley* (39) | 8.213 | 2002 | L |
| 278. | Rube Waddell+* (27) | 8.201 | 1904 | L |
| 279. | John Smoltz (39) | 8.185 | 2006 | R |
| 280. | Roger Clemens (24) | 8.180 | 1987 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 281. | Gary Nolan (19) | 8.179 | 1967 | R |
| Jose Rijo (21) | 8.179 | 1986 | R | |
| 283. | Ian Snell (24) | 8.177 | 2006 | R |
| 284. | Mike Mussina (34) | 8.175 | 2003 | R |
| 285. | Melido Perez (27) | 8.172 | 1993 | R |
| 286. | Roger Clemens (26) | 8.171 | 1989 | R |
| Javier Vazquez (29) | 8.171 | 2006 | R | |
| 288. | Justin Verlander (24) | 8.167 | 2007 | R |
| 289. | Aaron Sele (29) | 8.166 | 1999 | R |
| 290. | Mark Langston* (23) | 8.160 | 1984 | L |
| 291. | Ron Guidry* (27) | 8.156 | 1978 | L |
| Jerry Reuss* (23) | 8.156 | 1972 | L | |
| 293. | Pedro Astacio (29) | 8.147 | 1999 | R |
| Frank Tanana* (22) | 8.147 | 1976 | L | |
| 295. | Carlos Zambrano (24) | 8.140 | 2005 | R |
| 296. | Bartolo Colon (28) | 8.136 | 2001 | R |
| 297. | Ken Johnson (29) | 8.132 | 1962 | R |
| 298. | Chuck Finley* (33) | 8.130 | 1996 | L |
| 299. | Bob Gibson+ (29) | 8.127 | 1965 | R |
| 300. | Sid Fernandez* (26) | 8.125 | 1989 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 301. | Jerry Koosman* (29) | 8.117 | 1972 | L |
| 302. | Al Leiter* (32) | 8.114 | 1998 | L |
| 303. | Nolan Ryan+ (38) | 8.108 | 1985 | R |
| 304. | Shawn Estes* (24) | 8.104 | 1997 | L |
| Javier Vazquez (23) | 8.104 | 2000 | R | |
| 306. | Sam Jones (32) | 8.100 | 1958 | R |
| Jim Lonborg (25) | 8.100 | 1967 | R | |
| 308. | Cliff Lee* (25) | 8.095 | 2004 | L |
| 309. | Mark Langston* (27) | 8.093 | 1988 | L |
| 310. | Sid Fernandez* (29) | 8.092 | 1992 | L |
| Kevin Millwood (24) | 8.092 | 1999 | R | |
| 312. | Fernando Valenzuela* (25) | 8.087 | 1986 | L |
| 313. | Jose DeLeon (29) | 8.080 | 1990 | R |
| 314. | Roger Clemens (40) | 8.079 | 2003 | R |
| 315. | Curt Schilling (39) | 8.074 | 2006 | R |
| 316. | Danny Haren (27) | 8.073 | 2008 | R |
| 317. | Carlos Zambrano (23) | 8.070 | 2004 | R |
| 318. | Jason Bere (23) | 8.068 | 1994 | R |
| 319. | Sterling Hitchcock* (27) | 8.064 | 1998 | L |
| 320. | Tom Gordon (22) | 8.063 | 1990 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 321. | Shane Reynolds (30) | 8.061 | 1998 | R |
| 322. | Curt Schilling (37) | 8.060 | 2004 | R |
| 323. | Mickey Lolich* (27) | 8.059 | 1968 | L |
| 324. | Chan Ho Park (26) | 8.058 | 1999 | R |
| 325. | Steve Carlton+* (27) | 8.056 | 1972 | L |
| 326. | Tony Armas (23) | 8.054 | 2001 | R |
| 327. | Sam McDowell* (28) | 8.050 | 1971 | L |
| 328. | Tony Saunders* (24) | 8.049 | 1998 | L |
| 329. | Don Drysdale+ (22) | 8.047 | 1959 | R |
| Erik Hanson (25) | 8.047 | 1990 | R | |
| 331. | Pedro Martinez (23) | 8.045 | 1995 | R |
| Bob Veale* (28) | 8.045 | 1964 | L | |
| 333. | C.C. Sabathia* (25) | 8.035 | 2006 | L |
| 334. | Roy Oswalt (24) | 8.034 | 2002 | R |
| 335. | Johnny Vander Meer* (26) | 8.032 | 1941 | L |
| 336. | Dave Righetti* (23) | 8.016 | 1982 | L |
| 337. | Denny Neagle* (25) | 8.015 | 1994 | L |
| 338. | Javier Vazquez (28) | 8.012 | 2005 | R |
| 339. | Bob Gibson+ (26) | 8.011 | 1962 | R |
| 340. | Al Downing* (23) | 8.004 | 1964 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 341. | Steve Carlton+* (24) | 7.997 | 1969 | L |
| 342. | Roger Clemens (28) | 7.994 | 1991 | R |
| 343. | Floyd Bannister* (28) | 7.992 | 1983 | L |
| 344. | Shane Reynolds (26) | 7.984 | 1994 | R |
| 345. | Bert Blyleven (23) | 7.975 | 1974 | R |
| 346. | Bill Singer (24) | 7.970 | 1968 | R |
| 347. | Kevin Tapani (37) | 7.966 | 2001 | R |
| 348. | Randy Wolf* (26) | 7.965 | 2003 | L |
| 349. | Mario Soto (26) | 7.959 | 1983 | R |
| 350. | Todd Stottlemyre (32) | 7.956 | 1997 | R |
| 351. | Mike Mussina (31) | 7.952 | 2000 | R |
| 352. | Randy Johnson* (26) | 7.948 | 1990 | L |
| 353. | Cole Hamels* (24) | 7.945 | 2008 | L |
| 354. | Chris Bosio (24) | 7.941 | 1987 | R |
| John Montefusco (25) | 7.941 | 1975 | R | |
| 356. | Jose Rijo (28) | 7.939 | 1993 | R |
| 357. | Bob Veale* (31) | 7.936 | 1967 | L |
| 358. | Kelvim Escobar (27) | 7.935 | 2003 | R |
| 359. | Chris Carpenter (30) | 7.932 | 2005 | R |
| 360. | Bob Veale* (34) | 7.931 | 1970 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 361. | Ted Lilly* (30) | 7.927 | 2006 | L |
| 362. | Jose Contreras (32) | 7.926 | 2004 | R |
| 363. | Rich Harden (22) | 7.924 | 2004 | R |
| 364. | Melido Perez (26) | 7.922 | 1992 | R |
| 365. | Matt Kilroy* (20) | 7.919 | 1886 | L |
| 366. | Charlie Geggus? (22) | 7.917 | 1884 | |
| Bob Gibson+ (32) | 7.917 | 1968 | R | |
| Bob Sebra (25) | 7.917 | 1987 | R | |
| 369. | Juan Guzman (29) | 7.913 | 1996 | R |
| 370. | Robert Person (31) | 7.906 | 2001 | R |
| 371. | Ray Culp (26) | 7.904 | 1968 | R |
| 372. | Aaron Harang (30) | 7.902 | 2008 | R |
| 373. | Juan Guzman (26) | 7.900 | 1993 | R |
| 374. | Tim Wakefield (34) | 7.897 | 2001 | R |
| Randy Wolf* (31) | 7.897 | 2008 | L | |
| 376. | Fergie Jenkins+ (26) | 7.892 | 1969 | R |
| 377. | Kevin Brown (38) | 7.891 | 2003 | R |
| 378. | Freddy Garcia (29) | 7.886 | 2004 | R |
| Mike Remlinger* (32) | 7.886 | 1998 | L | |
| 380. | Hideo Nomo (33) | 7.884 | 2002 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 381. | Kevin Brown (34) | 7.882 | 1999 | R |
| Camilo Pascual (27) | 7.882 | 1961 | R | |
| 383. | Roger Clemens (42) | 7.879 | 2005 | R |
| Fergie Jenkins+ (27) | 7.879 | 1970 | R | |
| 385. | Mark Langston* (29) | 7.870 | 1990 | L |
| Jim Maloney (28) | 7.870 | 1968 | R | |
| Wade Miller (25) | 7.870 | 2002 | R | |
| 388. | Bronson Arroyo (31) | 7.866 | 2008 | R |
| 389. | Rube Waddell+* (28) | 7.859 | 1905 | L |
| 390. | John Lackey (27) | 7.856 | 2006 | R |
| 391. | Mike Mussina (37) | 7.845 | 2006 | R |
| John Smoltz (25) | 7.845 | 1992 | R | |
| 393. | Glendon Rusch* (26) | 7.844 | 2001 | L |
| 394. | Denny McLain (21) | 7.843 | 1965 | R |
| 395. | Stan Williams (24) | 7.840 | 1961 | R |
| 396. | Erik Bedard* (27) | 7.839 | 2006 | L |
| 397. | Kevin Foster (26) | 7.837 | 1995 | R |
| 398. | Rick Sutcliffe (28) | 7.835 | 1984 | R |
| 399. | Steve Carlton+* (22) | 7.834 | 1967 | L |
| Tom Gordon (29) | 7.834 | 1997 | R | |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 401. | Tom Seaver+ (33) | 7.833 | 1978 | R |
| 402. | Tim Belcher (27) | 7.826 | 1989 | R |
| 403. | Joey Hamilton (25) | 7.824 | 1996 | R |
| 404. | Roy Oswalt (26) | 7.823 | 2004 | R |
| 405. | Oliver Perez* (26) | 7.820 | 2008 | L |
| Mike Scott (33) | 7.820 | 1988 | R | |
| 407. | Gaylord Perry+ (26) | 7.819 | 1965 | R |
| 408. | Todd Stottlemyre (31) | 7.818 | 1996 | R |
| 409. | Roger Clemens (36) | 7.817 | 1999 | R |
| 410. | Jeff Fassero* (32) | 7.810 | 1995 | L |
| 411. | C.C. Sabathia* (26) | 7.805 | 2007 | L |
| Ben Sheets (29) | 7.805 | 2008 | R | |
| 413. | Tom Seaver+ (31) | 7.804 | 1976 | R |
| 414. | Chuck Finley* (37) | 7.803 | 2000 | L |
| J.R. Richard (25) | 7.803 | 1975 | R | |
| 416. | Felix Hernandez (21) | 7.802 | 2007 | R |
| 417. | Tom Seaver+ (30) | 7.801 | 1975 | R |
| 418. | Ray Culp (21) | 7.790 | 1963 | R |
| Chan Ho Park (25) | 7.790 | 1998 | R | |
| Tom Seaver+ (28) | 7.790 | 1973 | R | |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 421. | Johan Santana* (29) | 7.788 | 2008 | L |
| 422. | David Cone (26) | 7.785 | 1989 | R |
| Wandy Rodriguez* (28) | 7.785 | 2007 | L | |
| 424. | Chan Ho Park (24) | 7.781 | 1997 | R |
| 425. | John Clarkson+ (22) | 7.780 | 1884 | R |
| 426. | Bob Feller+ (19) | 7.779 | 1938 | R |
| 427. | Clay Kirby (23) | 7.777 | 1971 | R |
| Don Wilson (22) | 7.777 | 1967 | R | |
| 429. | Andy Pettitte* (31) | 7.776 | 2003 | L |
| 430. | Kevin Brown (32) | 7.774 | 1997 | R |
| 431. | Les Cain* (22) | 7.771 | 1970 | L |
| 432. | Greg Maddux (29) | 7.769 | 1995 | R |
| Wade Miller (24) | 7.769 | 2001 | R | |
| 434. | Mario Soto (24) | 7.766 | 1981 | R |
| 435. | Danny Haren (26) | 7.760 | 2007 | R |
| 436. | Bob Turley (26) | 7.758 | 1957 | R |
| 437. | Shaun Marcum (26) | 7.752 | 2008 | R |
| 438. | Tom Phoebus (25) | 7.745 | 1967 | R |
| 439. | Bart Johnson (21) | 7.736 | 1971 | R |
| 440. | Wade Miller (26) | 7.735 | 2003 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 441. | Camilo Pascual (22) | 7.728 | 1956 | R |
| 442. | John Maine (27) | 7.725 | 2008 | R |
| 443. | Jeff Fassero* (31) | 7.724 | 1994 | L |
| 444. | Zack Greinke (24) | 7.714 | 2008 | R |
| 445. | Bob Gibson+ (33) | 7.710 | 1969 | R |
| 446. | Balor Moore* (22) | 7.707 | 1973 | L |
| 447. | Nolan Ryan+ (33) | 7.703 | 1980 | R |
| 448. | James Shields (25) | 7.702 | 2007 | R |
| 449. | Matt Morris (26) | 7.696 | 2001 | R |
| 450. | Bobby Witt (25) | 7.688 | 1989 | R |
| 451. | John Smoltz (26) | 7.683 | 1993 | R |
| 452. | Rube Marquard+* (24) | 7.682 | 1911 | L |
| Shane Reynolds (28) | 7.682 | 1996 | R | |
| 454. | Jose Guzman (30) | 7.681 | 1993 | R |
| Russ Ortiz (26) | 7.681 | 2000 | R | |
| Bob Veale* (30) | 7.681 | 1966 | L | |
| 457. | Jaret Wright (28) | 7.680 | 2004 | R |
| 458. | Dennis Bennett* (22) | 7.677 | 1962 | L |
| 459. | Mickey Lolich* (26) | 7.676 | 1967 | L |
| 460. | Bob Gibson+ (28) | 7.674 | 1964 | R |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 461. | John Burkett (36) | 7.673 | 2001 | R |
| 462. | Bill Stoneman (27) | 7.666 | 1971 | R |
| 463. | Tom Seaver+ (29) | 7.665 | 1974 | R |
| 464. | Ted Lilly* (28) | 7.662 | 2004 | L |
| Bob Turley (24) | 7.662 | 1955 | R | |
| 466. | Darren Dreifort (28) | 7.661 | 2000 | R |
| 467. | Ian Snell (25) | 7.659 | 2007 | R |
| 468. | Juan Pizarro* (25) | 7.657 | 1962 | L |
| 469. | Jim Bibby (28) | 7.655 | 1973 | R |
| 470. | Ron Guidry* (28) | 7.654 | 1979 | L |
| 471. | Shane Reynolds (31) | 7.653 | 1999 | R |
| 472. | Pete Harnisch (26) | 7.649 | 1993 | R |
| 473. | Dazzy Vance+ (33) | 7.648 | 1924 | R |
| 474. | Jon Lieber (27) | 7.646 | 1997 | R |
| 475. | Mickey Lolich* (25) | 7.645 | 1966 | L |
| Frank Tanana* (23) | 7.645 | 1977 | L | |
| 477. | Bobby Witt (24) | 7.641 | 1988 | R |
| 478. | Pedro Astacio (31) | 7.639 | 2001 | R |
| Dustin McGowan (25) | 7.639 | 2007 | R | |
| 480. | Steve Carlton+* (34) | 7.637 | 1979 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| 481. | Tom Cheney (27) | 7.633 | 1962 | R |
| Mike Mussina (29) | 7.633 | 1998 | R | |
| 483. | Matt Clement (28) | 7.631 | 2003 | R |
| Al Downing* (26) | 7.631 | 1967 | L | |
| 485. | Terry Adams (28) | 7.629 | 2001 | R |
| Toad Ramsey* (21) | 7.629 | 1886 | L | |
| 487. | Bill Stoneman (26) | 7.628 | 1970 | R |
| 488. | Jerry Koosman* (34) | 7.624 | 1977 | L |
| Jon Matlack* (23) | 7.624 | 1973 | L | |
| 490. | Tom Glavine* (28) | 7.621 | 1994 | L |
| 491. | Floyd Bannister* (27) | 7.615 | 1982 | L |
| 492. | Tim Belcher (26) | 7.614 | 1988 | R |
| Walter Johnson+ (22) | 7.614 | 1910 | R | |
| Dave Morehead (22) | 7.614 | 1965 | R | |
| 495. | Mike Mussina (30) | 7.613 | 1999 | R |
| 496. | Kris Benson (25) | 7.608 | 2000 | R |
| 497. | Bert Blyleven (24) | 7.607 | 1975 | R |
| 498. | Dave Righetti* (22) | 7.604 | 1981 | L |
| 499. | Teddy Higuera* (29) | 7.601 | 1988 | L |
| 500. | Wilson Alvarez* (27) | 7.599 | 1997 | L |
| Rank | Player (age that year) | Strikeouts/9IP | Year | Throws |
| Al Downing* (24) | 7.599 | 1965 | L | |
| Freddy Garcia (24) | 7.599 | 1999 | R |
Note that seasons prior to 1876 are not included in single-season marks, but are included in career marks.
Stats updated through July 23, 2008.
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