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Elliott, Kalb, MLB Network:From MLB Network’s launch on January 1, 2009—when I used baseballreference.com’s play...
Single-Season Leaders & Records for Bases On Balls per 9 IP
Baseball Leaders & Baseball Records:
Single-Season
Career
Active
Progressive
Year-by-Year Top-Tens
Yearly League
+ - Indicates Hall of Famer. Bold indicates active player.
Statistic Description: 9 x BB / IP For recent years, leaders need 1 IP per team game played
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.
For batting rate stats, generally a minimum of 3.1 Plate Appearances/G, 1.0 IP/G, 0.5 Gm and Chances/Team Game (fielding), 0.2 SB att/Team Game (catchers), and 0.1 SB att/Team Game (baserunners only since 1951), and 0.1 decision/G for single-season leaderboards generally needed for rate statistics. For pitcher fielding the minimums are reduced by a third. For LF, CF, RF fielding stats, we only have reliable data since 1954, so all leaders are since 1954. Explanation of min. requirements
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
|---|---|---|---|---|
| 1. | George Zettlein (31) | 0.2308 | 1876 | R |
| 2. | Cherokee Fisher (31) | 0.2355 | 1876 | R |
| 3. | George Bradley (27) | 0.2755 | 1880 | R |
| 4. | Tommy Bond (20) | 0.2868 | 1876 | R |
| 5. | Tommy Bond (23) | 0.3890 | 1879 | R |
| 6. | Bobby Mathews (24) | 0.4186 | 1876 | R |
| 7. | Carlos Silva (26) | 0.4301 | 2005 | R |
| 8. | Guy Hecker (26) | 0.4327 | 1882 | R |
| 9. | Dale Williams (20) | 0.4337 | 1876 | R |
| 10. | Al Spalding+ (25) | 0.4426 | 1876 | R |
| 11. | Pud Galvin+ (22) | 0.4705 | 1879 | R |
| 12. | George Bradley (26) | 0.4805 | 1879 | R |
| 13. | Sam Weaver (22) | 0.4935 | 1878 | R |
| 14. | Terry Larkin (23) | 0.5260 | 1879 | R |
| 15. | Jim Devlin (27) | 0.5354 | 1876 | R |
| 16. | Denny Driscoll (26) | 0.5373 | 1882 | L |
| 17. | Terry Larkin (22) | 0.5514 | 1878 | R |
| 18. | Monte Ward+ (19) | 0.5520 | 1879 | R |
| 19. | Tommy Bond (22) | 0.5576 | 1878 | R |
| 20. | Candy Cummings+ (27) | 0.5833 | 1876 | R |
| 21. | George Bradley (23) | 0.5969 | 1876 | R |
| 22. | Henry Boyle (23) | 0.6000 | 1884 | R |
| 23. | George Bradley (31) | 0.6053 | 1884 | R |
| 24. | Harry McCormick (23) | 0.6101 | 1879 | R |
| 25. | Jim Whitney (25) | 0.6128 | 1883 | R |
| 26. | Babe Adams (38) | 0.6160 | 1920 | R |
| 27. | Denny Driscoll (28) | 0.6176 | 1884 | L |
| Christy Mathewson+ (32) | 0.6176 | 1913 | R | |
| 29. | John Murphy (26) | 0.6200 | 1884 | |
| 30. | Tommy Bond (21) | 0.6219 | 1877 | R |
| 31. | Pud Galvin+ (23) | 0.6279 | 1880 | R |
| 32. | Bret Saberhagen (30) | 0.6598 | 1994 | R |
| 33. | Jim Devlin (28) | 0.6601 | 1877 | R |
| 34. | Christy Mathewson+ (33) | 0.6635 | 1914 | R |
| 35. | Monte Ward+ (20) | 0.6807 | 1880 | R |
| 36. | Pud Galvin+ (26) | 0.6856 | 1883 | R |
| 37. | Cy Young+ (37) | 0.6868 | 1904 | R |
| 38. | Bobby Mathews (30) | 0.6947 | 1882 | R |
| 39. | Tommy Bond (28) | 0.6983 | 1884 | R |
| 40. | Stump Wiedman (19) | 0.7126 | 1880 | R |
| 41. | Jim Whitney (26) | 0.7232 | 1884 | R |
| 42. | Sam Weaver (28) | 0.7279 | 1884 | R |
| 43. | Bobby Mathews (31) | 0.7323 | 1883 | R |
| 44. | Tricky Nichols (27) | 0.7347 | 1878 | R |
| 45. | Red Lucas (31) | 0.7375 | 1933 | R |
| 46. | Guy Hecker (28) | 0.7515 | 1884 | R |
| 47. | Candy Cummings+ (28) | 0.7516 | 1877 | R |
| 48. | Jim Whitney (27) | 0.7545 | 1885 | R |
| 49. | Jack Lynch (27) | 0.7621 | 1884 | R |
| 50. | Cliff Lee (31) | 0.7630 | 2010 | L |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 51. | Charlie Sweeney (21) | 0.7683 | 1884 | R |
| 52. | Fred Goldsmith (24) | 0.7702 | 1880 | R |
| 53. | Bob Tewksbury (31) | 0.7725 | 1992 | R |
| 54. | Greg Maddux (31) | 0.7736 | 1997 | R |
| 55. | Cy Young+ (39) | 0.7822 | 1906 | R |
| 56. | Babe Adams (37) | 0.7861 | 1919 | R |
| 57. | Sam Weaver (27) | 0.7862 | 1883 | R |
| 58. | Babe Adams (40) | 0.7879 | 1922 | R |
| 59. | Slim Sallee (34) | 0.7906 | 1919 | L |
| 60. | Old Hoss Radbourn+ (28) | 0.7970 | 1883 | R |
| 61. | John Coleman (20) | 0.8025 | 1883 | R |
| 62. | Pud Galvin+ (25) | 0.8084 | 1882 | R |
| 63. | Ed Dugan (20) | 0.8116 | 1884 | R |
| 64. | Slim Sallee (33) | 0.8182 | 1918 | L |
| 65. | Tommy Bond (24) | 0.8215 | 1880 | R |
| 66. | Dory Dean (23) | 0.8223 | 1876 | R |
| 67. | Foghorn Bradley (20) | 0.8308 | 1876 | R |
| Addie Joss+ (28) | 0.8308 | 1908 | R | |
| 69. | Curry Foley (23) | 0.8351 | 1879 | L |
| 70. | Cy Young+ (38) | 0.8420 | 1905 | R |
| 71. | Bob Tewksbury (32) | 0.8424 | 1993 | R |
| 72. | Fred Goldsmith (26) | 0.8444 | 1882 | R |
| 73. | David Wells (40) | 0.8451 | 2003 | L |
| 74. | Sam Weaver (26) | 0.8491 | 1882 | R |
| 75. | Stump Wiedman (21) | 0.8540 | 1882 | R |
| 76. | LaMarr Hoyt (30) | 0.8558 | 1985 | R |
| 77. | Deacon Phillippe (30) | 0.8603 | 1902 | R |
| 78. | Peek-A-Boo Veach (22) | 0.8654 | 1884 | |
| Will White (23) | 0.8654 | 1878 | R | |
| 80. | James Burke | 0.8665 | 1884 | |
| 81. | Pud Galvin+ (24) | 0.8734 | 1881 | R |
| 82. | Jim Whitney (24) | 0.8786 | 1882 | R |
| 83. | Jack Lynch (26) | 0.8824 | 1883 | R |
| 84. | Pete Alexander+ (36) | 0.8852 | 1923 | R |
| 85. | Jumbo McGinnis (30) | 0.8890 | 1884 | |
| 86. | George Bradley (24) | 0.8909 | 1877 | R |
| 87. | Pud Galvin+ (27) | 0.8910 | 1884 | R |
| 88. | Cy Young+ (34) | 0.8968 | 1901 | R |
| 89. | Will White (24) | 0.9000 | 1879 | R |
| 90. | Deacon Phillippe (31) | 0.9021 | 1903 | R |
| 91. | Fred Goldsmith (27) | 0.9157 | 1883 | R |
| 92. | Monte Ward+ (18) | 0.9162 | 1878 | R |
| 93. | Jon Lieber (34) | 0.9170 | 2004 | R |
| 94. | David Wells (41) | 0.9199 | 2004 | L |
| 95. | George Bradley (30) | 0.9238 | 1883 | R |
| 96. | Jim Whitney (29) | 0.9341 | 1887 | R |
| 97. | Stump Wiedman (20) | 0.9391 | 1881 | R |
| 98. | Terry Larkin (21) | 0.9521 | 1877 | R |
| 99. | Tiny Bonham (28) | 0.9558 | 1942 | R |
| 100. | Blondie Purcell (25) | 0.9562 | 1879 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 101. | Christy Mathewson+ (27) | 0.9676 | 1908 | R |
| 102. | Christy Mathewson+ (34) | 0.9677 | 1915 | R |
| 103. | Fred Corey (25) | 0.9708 | 1880 | R |
| 104. | Jesse Tannehill (27) | 0.9740 | 1902 | L |
| 105. | Will White (25) | 0.9742 | 1880 | R |
| 106. | Cy Young+ (36) | 0.9746 | 1903 | R |
| 107. | Cy Young+ (31) | 0.9771 | 1898 | R |
| 108. | Old Hoss Radbourn+ (27) | 0.9850 | 1882 | R |
| 109. | Christy Mathewson+ (31) | 0.9871 | 1912 | R |
| 110. | Greg Maddux (29) | 0.9873 | 1995 | R |
| 111. | Bill Burns (28) | 0.9878 | 1908 | L |
| 112. | Walter Johnson+ (25) | 0.9884 | 1913 | R |
| 113. | Bobby Mitchell (21) | 0.9900 | 1877 | L |
| 114. | Harry Salisbury (27) | 0.9940 | 1882 | |
| 115. | Jack Lynch (28) | 0.9974 | 1885 | R |
| 116. | Monte Ward+ (23) | 1.0072 | 1883 | R |
| 117. | Cy Young+ (33) | 1.0083 | 1900 | R |
| 118. | Dennis Eckersley+ (30) | 1.0098 | 1985 | R |
| 119. | Babe Adams (39) | 1.0125 | 1921 | R |
| Guy Hecker (29) | 1.0125 | 1885 | R | |
| 121. | Gary Nolan (28) | 1.0153 | 1976 | R |
| 122. | Al Orth (28) | 1.0225 | 1901 | R |
| 123. | Bobby Mathews (32) | 1.0240 | 1884 | R |
| 124. | Fergie Jenkins+ (28) | 1.0246 | 1971 | R |
| 125. | Jim McCormick (23) | 1.0264 | 1880 | R |
| 126. | David Wells (42) | 1.0272 | 2005 | L |
| 127. | Greg Maddux (30) | 1.0286 | 1996 | R |
| 128. | Brad Radke (32) | 1.0316 | 2005 | R |
| 129. | Brad Radke (28) | 1.0354 | 2001 | R |
| 130. | Brian Anderson (26) | 1.0385 | 1998 | L |
| 131. | Greg Maddux (35) | 1.0429 | 2001 | R |
| 132. | Denny Driscoll (27) | 1.0436 | 1883 | L |
| 133. | Paul Derringer (32) | 1.0465 | 1939 | R |
| 134. | Frank Hankinson (23) | 1.0535 | 1879 | R |
| 135. | Juan Marichal+ (28) | 1.0542 | 1966 | R |
| 136. | Jesse Tannehill (29) | 1.0544 | 1904 | L |
| 137. | Noodles Hahn (25) | 1.0582 | 1904 | L |
| 138. | Bob Caruthers (21) | 1.0636 | 1885 | R |
| Pud Galvin+ (28) | 1.0636 | 1885 | R | |
| 140. | Carl Hubbell+ (31) | 1.0639 | 1934 | L |
| 141. | Brad Radke (31) | 1.0653 | 2004 | R |
| 142. | Jesse Barnes (26) | 1.0654 | 1919 | R |
| 143. | Ed Morris (21) | 1.0683 | 1884 | L |
| 144. | Deacon Phillippe (34) | 1.0701 | 1906 | R |
| 145. | LaMarr Hoyt (28) | 1.0703 | 1983 | R |
| 146. | Cy Young+ (32) | 1.0722 | 1899 | R |
| 147. | Cal McVey (27) | 1.0761 | 1877 | R |
| 148. | Roy Halladay (33) | 1.0771 | 2010 | R |
| 149. | Ben Sanders (23) | 1.0787 | 1888 | R |
| 150. | Roy Halladay (26) | 1.0827 | 2003 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 151. | Lon Knight (23) | 1.0851 | 1876 | R |
| 152. | Ed Walsh+ (27) | 1.0862 | 1908 | R |
| 153. | Bob Barr (27) | 1.0896 | 1884 | R |
| 154. | Lew Burdette (34) | 1.0906 | 1961 | R |
| 155. | Pud Galvin+ (31) | 1.0907 | 1888 | R |
| 156. | Bill Swift (24) | 1.0918 | 1932 | R |
| 157. | Don Newcombe (33) | 1.0946 | 1959 | R |
| 158. | Tiny Bonham (31) | 1.0959 | 1945 | R |
| 159. | Dick Rudolph (28) | 1.0962 | 1916 | R |
| 160. | Pete Alexander+ (38) | 1.1059 | 1925 | R |
| 161. | Al Orth (29) | 1.1111 | 1902 | R |
| 162. | Harry Salisbury (24) | 1.1124 | 1879 | |
| 163. | Cy Young+ (41) | 1.1137 | 1908 | R |
| 164. | Christy Mathewson+ (30) | 1.1140 | 1911 | R |
| 165. | Jimmy Key (28) | 1.1250 | 1989 | L |
| 166. | Lee Richmond (23) | 1.1275 | 1880 | L |
| 167. | Monte Ward+ (22) | 1.1329 | 1882 | R |
| 168. | Joel Pineiro (30) | 1.1355 | 2009 | R |
| 169. | Greg Maddux (41) | 1.1364 | 2007 | R |
| 170. | Bill Bernhard (32) | 1.1408 | 1903 | R |
| 171. | Lew Burdette (33) | 1.1427 | 1960 | R |
| 172. | Josh Tomlin (26) | 1.1431 | 2011 | R |
| 173. | Red Donahue (30) | 1.1432 | 1903 | R |
| 174. | Zane Smith (30) | 1.1447 | 1991 | L |
| 175. | Curt Schilling (35) | 1.1452 | 2002 | R |
| 176. | Addie Joss+ (29) | 1.1497 | 1909 | R |
| 177. | Herb Pennock+ (36) | 1.1514 | 1930 | L |
| 178. | Jim McCormick (21) | 1.1538 | 1878 | R |
| 179. | Deacon Phillippe (29) | 1.1554 | 1901 | R |
| 180. | Pete Alexander+ (29) | 1.1568 | 1916 | R |
| 181. | Charlie Buffinton (23) | 1.1652 | 1884 | R |
| 182. | Red Lucas (30) | 1.1696 | 1932 | R |
| 183. | Silver King (20) | 1.1699 | 1888 | R |
| 184. | Greg Swindell (26) | 1.1723 | 1991 | L |
| 185. | Addie Joss+ (23) | 1.1739 | 1903 | R |
| 186. | Doc Landis (27) | 1.1750 | 1882 | |
| 187. | Doc White (28) | 1.1753 | 1907 | L |
| 188. | Christy Mathewson+ (28) | 1.1768 | 1909 | R |
| 189. | Pete Alexander+ (34) | 1.1786 | 1921 | R |
| 190. | Lew Burdette (32) | 1.1807 | 1959 | R |
| 191. | Bobby Mathews (25) | 1.1830 | 1877 | R |
| 192. | Scott McGregor (25) | 1.1851 | 1979 | L |
| 193. | Jock Menefee (34) | 1.1858 | 1902 | R |
| 194. | Jim Merritt (23) | 1.1859 | 1967 | L |
| 195. | Brad Radke (30) | 1.1868 | 2003 | R |
| 196. | Charlie Hodnett (23) | 1.1901 | 1884 | |
| 197. | Gus Krock (22) | 1.1923 | 1888 | R |
| 198. | Bert Humphries (32) | 1.1934 | 1913 | R |
| 199. | Cliff Lee (33) | 1.1943 | 2012 | L |
| 200. | Rick Honeycutt (27) | 1.1984 | 1981 | L |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 201. | Fred Goldsmith (25) | 1.2000 | 1881 | R |
| Bill McGunnigle (24) | 1.2000 | 1879 | R | |
| 203. | Pretzels Getzien (24) | 1.2030 | 1888 | R |
| 204. | Bert Humphries (34) | 1.2058 | 1915 | R |
| 205. | Robin Roberts+ (29) | 1.2108 | 1956 | R |
| 206. | Jack Taylor (28) | 1.2138 | 1902 | R |
| 207. | Dale Gear (29) | 1.2147 | 1901 | R |
| Bobby Mathews (33) | 1.2147 | 1885 | R | |
| 209. | David Wells (37) | 1.2148 | 2000 | L |
| 210. | Ben Sheets (25) | 1.2152 | 2004 | R |
| 211. | Vern Law (36) | 1.2158 | 1966 | R |
| 212. | Watty Clark (33) | 1.2174 | 1935 | L |
| 213. | David Wells (35) | 1.2177 | 1998 | L |
| 214. | Bob Caruthers (24) | 1.2179 | 1888 | R |
| 215. | Jim McCormick (22) | 1.2190 | 1879 | R |
| 216. | Dick Donovan (35) | 1.2233 | 1963 | R |
| 217. | Robin Roberts+ (32) | 1.2241 | 1959 | R |
| 218. | Robin Roberts+ (25) | 1.2273 | 1952 | R |
| 219. | Jumbo McGinnis (28) | 1.2283 | 1882 | |
| 220. | Pete Donohue (25) | 1.2287 | 1926 | R |
| 221. | Fritz Peterson (26) | 1.2292 | 1968 | L |
| Rick Reed (33) | 1.2292 | 1998 | R | |
| 223. | Fred Corey (27) | 1.2302 | 1882 | R |
| 224. | John Coleman (21) | 1.2319 | 1884 | R |
| 225. | Paul Byrd (34) | 1.2333 | 2005 | R |
| 226. | Fergie Jenkins+ (31) | 1.2335 | 1974 | R |
| 227. | Jose Lima (25) | 1.2343 | 1998 | R |
| 228. | Al Atkinson (23) | 1.2345 | 1884 | R |
| 229. | Curt Schilling (39) | 1.2353 | 2006 | R |
| 230. | Bill Sweeney (26) | 1.2379 | 1884 | R |
| 231. | Bobby Mathews (27) | 1.2381 | 1879 | R |
| 232. | Gary Nolan (27) | 1.2389 | 1975 | R |
| 233. | Bob Barr (26) | 1.2393 | 1883 | R |
| 234. | Cy Young+ (35) | 1.2400 | 1902 | R |
| 235. | Babe Adams (32) | 1.2403 | 1914 | R |
| 236. | Bob Black (21) | 1.2439 | 1884 | R |
| 237. | Rick Reed (37) | 1.2447 | 2002 | R |
| 238. | Hal Brown (35) | 1.2453 | 1960 | R |
| 239. | Pete Alexander+ (35) | 1.2456 | 1922 | R |
| 240. | Dan Haren (30) | 1.2462 | 2011 | R |
| 241. | Babe Adams (33) | 1.2490 | 1915 | R |
| 242. | Ralph Terry (29) | 1.2495 | 1965 | R |
| 243. | Josh Towers (28) | 1.2508 | 2005 | R |
| 244. | Ray Prim (38) | 1.2520 | 1945 | L |
| 245. | Bill Hands (28) | 1.2526 | 1968 | R |
| 246. | George Derby (25) | 1.2539 | 1883 | R |
| 247. | Mickey Welch+ (20) | 1.2544 | 1880 | R |
| 248. | Scott Sanderson (34) | 1.2548 | 1991 | R |
| 249. | Sam Leever (30) | 1.2568 | 1902 | R |
| 250. | Jim Whitney (28) | 1.2595 | 1886 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 251. | Jim Kaat (37) | 1.2650 | 1976 | L |
| 252. | Carl Hubbell+ (29) | 1.2676 | 1932 | L |
| 253. | Juan Marichal+ (30) | 1.2712 | 1968 | R |
| 254. | Bob Tewksbury (33) | 1.2719 | 1994 | R |
| 255. | Ed Lynch (29) | 1.2723 | 1985 | R |
| 256. | Scott Stratton (20) | 1.2738 | 1890 | R |
| 257. | Kevin Brown (31) | 1.2747 | 1996 | R |
| 258. | Pete Alexander+ (40) | 1.2761 | 1927 | R |
| Abner Powell (23) | 1.2761 | 1884 | R | |
| 260. | Jesse Tannehill (28) | 1.2768 | 1903 | L |
| 261. | Fred Goldsmith (28) | 1.2798 | 1884 | R |
| 262. | Jim Conway (25) | 1.2816 | 1884 | R |
| 263. | Dick Burns (20) | 1.2831 | 1884 | L |
| 264. | Jesse Tannehill (26) | 1.2840 | 1901 | L |
| 265. | Jon Lieber (36) | 1.2857 | 2006 | R |
| Bill Reidy (29) | 1.2857 | 1903 | R | |
| 267. | Babe Adams (29) | 1.2886 | 1911 | R |
| 268. | Robin Roberts+ (33) | 1.2893 | 1960 | R |
| 269. | Fred Hutchinson (31) | 1.2903 | 1951 | R |
| 270. | Eppa Rixey+ (31) | 1.2926 | 1922 | L |
| 271. | Tricky Nichols (31) | 1.2930 | 1882 | R |
| 272. | Hugh Daily (36) | 1.2943 | 1884 | R |
| 273. | Bill Duggleby (27) | 1.2963 | 1901 | R |
| 274. | Ted Lyons+ (41) | 1.2976 | 1942 | R |
| 275. | Pete Alexander+ (30) | 1.2990 | 1917 | R |
| 276. | Old Hoss Radbourn+ (29) | 1.2996 | 1884 | R |
| 277. | Catfish Hunter+ (28) | 1.3005 | 1974 | R |
| 278. | Nick Altrock (30) | 1.3058 | 1907 | L |
| 279. | Kid Madden (20) | 1.3091 | 1888 | L |
| Roy Patterson (27) | 1.3091 | 1904 | R | |
| 281. | Ralph Terry (27) | 1.3097 | 1963 | R |
| 282. | Paul Byrd (36) | 1.3102 | 2007 | R |
| 283. | Schoolboy Rowe (33) | 1.3116 | 1943 | R |
| 284. | Pete Conway (21) | 1.3120 | 1888 | R |
| 285. | Cy Young+ (30) | 1.3138 | 1897 | R |
| 286. | Nick Altrock (29) | 1.3140 | 1906 | L |
| 287. | Roy Halladay (32) | 1.3180 | 2009 | R |
| 288. | Brandon McCarthy (27) | 1.3184 | 2011 | R |
| 289. | Phil Reccius (22) | 1.3222 | 1884 | |
| 290. | Tim Keefe+ (27) | 1.3230 | 1884 | R |
| 291. | Lee Richmond (24) | 1.3237 | 1881 | L |
| 292. | Vern Law (30) | 1.3252 | 1960 | R |
| 293. | Charlie Buffinton (27) | 1.3264 | 1888 | R |
| 294. | Pedro Martinez (28) | 1.3272 | 2000 | R |
| 295. | Frank Kitson (33) | 1.3273 | 1903 | R |
| 296. | Rube Benton (34) | 1.3279 | 1924 | L |
| 297. | Pete Alexander+ (37) | 1.3287 | 1924 | R |
| 298. | Jack Powell (26) | 1.3300 | 1901 | R |
| 299. | Will White (27) | 1.3313 | 1882 | R |
| 300. | Red Lucas (34) | 1.3321 | 1936 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 301. | Cy Young+ (40) | 1.3369 | 1907 | R |
| 302. | Milt Pappas (33) | 1.3385 | 1972 | R |
| 303. | Paul Derringer (29) | 1.3388 | 1936 | R |
| 304. | Bill Mountjoy (25) | 1.3391 | 1884 | R |
| 305. | Rick Reed (32) | 1.3392 | 1997 | R |
| 306. | Wilbur Cooper (32) | 1.3400 | 1924 | L |
| 307. | Lum Harris (29) | 1.3423 | 1944 | R |
| 308. | Cy Young+ (29) | 1.3467 | 1896 | R |
| 309. | George Bradley (29) | 1.3469 | 1882 | R |
| 310. | Eddie Rommel (30) | 1.3474 | 1928 | R |
| 311. | Roy Halladay (34) | 1.3481 | 2011 | R |
| 312. | Ray Collins (26) | 1.3500 | 1913 | L |
| 313. | Larry Benton (34) | 1.3525 | 1932 | R |
| 314. | Eddie Cicotte (34) | 1.3534 | 1918 | R |
| 315. | Deacon Phillippe (28) | 1.3548 | 1900 | R |
| 316. | Ted Lyons+ (38) | 1.3552 | 1939 | R |
| 317. | Greg Maddux (37) | 1.3603 | 2003 | R |
| 318. | Amos Booth (28) | 1.3605 | 1877 | R |
| 319. | Adonis Terry (19) | 1.3613 | 1884 | R |
| 320. | Tricky Nichols (26) | 1.3629 | 1877 | R |
| 321. | Nig Cuppy (29) | 1.3631 | 1899 | R |
| 322. | Pete Alexander+ (41) | 1.3666 | 1928 | R |
| 323. | Curt Schilling (34) | 1.3675 | 2001 | R |
| 324. | Pud Galvin+ (30) | 1.3684 | 1887 | R |
| 325. | Cliff Lee (29) | 1.3701 | 2008 | L |
| 326. | Carl Hubbell+ (30) | 1.3704 | 1933 | L |
| 327. | Tim Keefe+ (23) | 1.3714 | 1880 | R |
| 328. | Addie Joss+ (26) | 1.3723 | 1906 | R |
| 329. | Ken Raffensberger (33) | 1.3753 | 1951 | L |
| 330. | Charlie Buffinton (22) | 1.3784 | 1883 | R |
| 331. | Rick Reed (36) | 1.3789 | 2001 | R |
| 332. | Fritz Peterson (29) | 1.3796 | 1971 | L |
| 333. | Greg Maddux (28) | 1.3812 | 1994 | R |
| 334. | CC Sabathia (26) | 1.3817 | 2007 | L |
| 335. | Ed Siever (28) | 1.3819 | 1903 | L |
| 336. | Fritz Peterson (28) | 1.3828 | 1970 | L |
| 337. | Bob Forsch (30) | 1.3835 | 1980 | R |
| 338. | Ed Morris (25) | 1.3875 | 1888 | L |
| 339. | Curt Schilling (37) | 1.3897 | 2004 | R |
| 340. | Roy Halladay (29) | 1.3909 | 2006 | R |
| 341. | Greg Maddux (42) | 1.3918 | 2008 | R |
| 342. | Mordecai Brown+ (32) | 1.3920 | 1909 | R |
| 343. | Pete Alexander+ (39) | 1.3927 | 1926 | R |
| Mike Mussina (39) | 1.3927 | 2008 | R | |
| 345. | Clark Griffith+ (33) | 1.3944 | 1903 | R |
| Mickey Welch+ (23) | 1.3944 | 1883 | R | |
| 347. | Chief Bender+ (23) | 1.3951 | 1907 | R |
| 348. | Greg Maddux (38) | 1.3966 | 2004 | R |
| 349. | Leon Cadore (27) | 1.4003 | 1919 | R |
| 350. | Perry Werden (22) | 1.4009 | 1884 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| 351. | John Clarkson+ (23) | 1.4013 | 1885 | R |
| 352. | Dave Rozema (20) | 1.4015 | 1977 | R |
| 353. | Juan Marichal+ (27) | 1.4018 | 1965 | R |
| 354. | Curt Davis (34) | 1.4019 | 1938 | R |
| 355. | Ray Herbert (33) | 1.4021 | 1963 | R |
| 356. | Carl Hubbell+ (36) | 1.4026 | 1939 | L |
| 357. | Syl Johnson (30) | 1.4032 | 1931 | R |
| 358. | Addie Joss+ (24) | 1.4038 | 1904 | R |
| 359. | Deacon Phillippe (32) | 1.4040 | 1904 | R |
| 360. | Lady Baldwin (26) | 1.4052 | 1885 | L |
| 361. | Babe Adams (31) | 1.4060 | 1913 | R |
| 362. | Nick Altrock (27) | 1.4072 | 1904 | L |
| 363. | Jim McCormick (27) | 1.4077 | 1884 | R |
| 364. | Gaylord Perry+ (27) | 1.4081 | 1966 | R |
| 365. | Doug Bird (26) | 1.4115 | 1976 | R |
| 366. | Mordecai Brown+ (31) | 1.4120 | 1908 | R |
| 367. | Tony Mullane (25) | 1.4127 | 1884 | |
| 368. | Doug Bird (32) | 1.4136 | 1982 | R |
| 369. | Robin Roberts+ (38) | 1.4161 | 1965 | R |
| 370. | Bill Monbouquette (26) | 1.4175 | 1963 | R |
| 371. | Babe Adams (41) | 1.4181 | 1923 | R |
| 372. | Slim Sallee (32) | 1.4189 | 1917 | L |
| 373. | Kid Nichols+ (34) | 1.4196 | 1904 | R |
| 374. | Huck Betts (35) | 1.4211 | 1932 | R |
| 375. | Charlie Ferguson (24) | 1.4226 | 1887 | R |
| 376. | Fritz Peterson (27) | 1.4228 | 1969 | L |
| 377. | John Burkett (32) | 1.4261 | 1997 | R |
| Herb Pennock+ (37) | 1.4261 | 1931 | L | |
| 379. | Roy Halladay (31) | 1.4268 | 2008 | R |
| 380. | Jack Jones (22) | 1.4271 | 1883 | R |
| Randy Jones (26) | 1.4271 | 1976 | L | |
| 382. | Noodles Hahn (24) | 1.4291 | 1903 | L |
| 383. | Reb Russell (27) | 1.4300 | 1916 | L |
| 384. | Wilbur Cooper (28) | 1.4312 | 1920 | L |
| 385. | Robin Roberts+ (36) | 1.4324 | 1963 | R |
| 386. | Carl Mays (32) | 1.4336 | 1924 | R |
| Gaylord Perry+ (42) | 1.4336 | 1981 | R | |
| 388. | Addie Joss+ (27) | 1.4350 | 1907 | R |
| 389. | Jim Kaat (28) | 1.4354 | 1967 | L |
| 390. | Paul Derringer (31) | 1.4365 | 1938 | R |
| Jack Taylor (27) | 1.4365 | 1901 | R | |
| 392. | Jim McCormick (24) | 1.4373 | 1881 | R |
| 393. | Shane Reynolds (31) | 1.4374 | 1999 | R |
| 394. | Eddie Cicotte (35) | 1.4380 | 1919 | R |
| 395. | Guy Hecker (27) | 1.4392 | 1883 | R |
| 396. | Atlee Hammaker (24) | 1.4400 | 1982 | L |
| Greg Maddux (39) | 1.4400 | 2005 | R | |
| 398. | Art Nehf (27) | 1.4430 | 1920 | L |
| 399. | Rube Benton (30) | 1.4431 | 1920 | L |
| 400. | Billy Taylor (29) | 1.4455 | 1884 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| Monte Ward+ (21) | 1.4455 | 1881 | R | |
| 402. | Tony Mullane (24) | 1.4457 | 1883 | |
| 403. | Addie Joss+ (25) | 1.4476 | 1905 | R |
| 404. | Al Orth (31) | 1.4479 | 1904 | R |
| Jack Quinn (44) | 1.4479 | 1928 | R | |
| 406. | Vern Law (35) | 1.4494 | 1965 | R |
| 407. | Gene Packard (29) | 1.4516 | 1917 | L |
| 408. | Dutch Leonard (35) | 1.4520 | 1944 | R |
| 409. | The Only Nolan (20) | 1.4524 | 1878 | R |
| 410. | Herb Pennock+ (32) | 1.4531 | 1926 | L |
| 411. | Bret Saberhagen (21) | 1.4533 | 1985 | R |
| 412. | Jesse Tannehill (24) | 1.4534 | 1899 | L |
| 413. | Bryn Smith (32) | 1.4545 | 1988 | R |
| 414. | Pete Alexander+ (32) | 1.4553 | 1919 | R |
| 415. | Jim Bunning+ (32) | 1.4560 | 1964 | R |
| 416. | Fred Corey (28) | 1.4562 | 1883 | R |
| Paul Derringer (33) | 1.4562 | 1940 | R | |
| 418. | Carl Hubbell+ (32) | 1.4570 | 1935 | L |
| 419. | Pete Donohue (23) | 1.4573 | 1924 | R |
| 420. | Pete Meegan (21) | 1.4581 | 1884 | |
| 421. | Dutch Leonard (36) | 1.4583 | 1945 | R |
| 422. | Doyle Alexander (35) | 1.4584 | 1986 | R |
| 423. | Ron Guidry (34) | 1.4595 | 1985 | L |
| Jack Manning (22) | 1.4595 | 1876 | R | |
| Barney Wolfe (28) | 1.4595 | 1904 | R | |
| 426. | Will White (29) | 1.4605 | 1884 | R |
| 427. | Don Newcombe (29) | 1.4636 | 1955 | R |
| 428. | Red Lucas (25) | 1.4645 | 1927 | R |
| 429. | Pete Donohue (24) | 1.4651 | 1925 | R |
| 430. | Jim Whitney (23) | 1.4665 | 1881 | R |
| 431. | Pol Perritt (26) | 1.4678 | 1918 | R |
| 432. | Bob Bruce (31) | 1.4679 | 1964 | R |
| 433. | Bill Gullickson (25) | 1.4691 | 1984 | R |
| 434. | Bob Friend (29) | 1.4692 | 1960 | R |
| 435. | Blondie Purcell (26) | 1.4694 | 1880 | R |
| 436. | Doc White (32) | 1.4697 | 1911 | L |
| 437. | Eppa Rixey+ (34) | 1.4722 | 1925 | L |
| 438. | Bill Bernhard (31) | 1.4735 | 1902 | R |
| 439. | Bob Friend (32) | 1.4739 | 1963 | R |
| 440. | Urban Shocker (31) | 1.4741 | 1922 | R |
| 441. | Red Lucas (29) | 1.4748 | 1931 | R |
| 442. | Bret Saberhagen (25) | 1.4752 | 1989 | R |
| 443. | Kevin Tapani (27) | 1.4754 | 1991 | R |
| 444. | Danny Darwin (40) | 1.4757 | 1996 | R |
| 445. | Fred Corey (26) | 1.4788 | 1881 | R |
| 446. | Don Drysdale+ (29) | 1.4799 | 1966 | R |
| 447. | Sherry Smith (35) | 1.4814 | 1926 | L |
| 448. | Waite Hoyt+ (35) | 1.4817 | 1935 | R |
| 449. | Fergie Jenkins+ (35) | 1.4819 | 1978 | R |
| 450. | Rene Arocha (27) | 1.4840 | 1993 | R |
| Rank | Player (age that year) | Bases On Balls per 9 IP | Year | Throws |
| Bill Swift (25) | 1.4840 | 1933 | R | |
| 452. | Ed Walsh+ (29) | 1.4851 | 1910 | R |
| 453. | Cy Young+ (43) | 1.4878 | 1910 | R |
| 454. | Bob Bruce (32) | 1.4891 | 1965 | R |
| 455. | Bill Long (27) | 1.4911 | 1987 | R |
| 456. | Dan Haren (28) | 1.4913 | 2009 | R |
| 457. | Bret Saberhagen (34) | 1.4914 | 1998 | R |
| 458. | Russ Ford (31) | 1.4919 | 1914 | R |
| 459. | Mike Caldwell (30) | 1.4936 | 1979 | L |
| 460. | Don Newcombe (31) | 1.4950 | 1957 | R |
| 461. | Jim Whitney (30) | 1.4954 | 1888 | R |
| 462. | Walter Johnson+ (27) | 1.4970 | 1915 | R |
| Robin Roberts+ (27) | 1.4970 | 1954 | R | |
| 464. | Paul Byrd (31) | 1.4978 | 2002 | R |
| Steve Kline (23) | 1.4978 | 1971 | R | |
| 466. | Vern Law (34) | 1.5000 | 1964 | R |
| George Smith (26) | 1.5000 | 1918 | R | |
| John Valentine (27) | 1.5000 | 1883 | ||
| 469. | Fred Heimach (31) | 1.5030 | 1932 | L |
| 470. | Art Nehf (24) | 1.5043 | 1917 | L |
| 471. | Dizzy Dean+ (27) | 1.5051 | 1937 | R |
| 472. | Ken Raffensberger (32) | 1.5063 | 1950 | L |
| 473. | Carl Pavano (34) | 1.5068 | 2010 | R |
| 474. | James Shields (25) | 1.5070 | 2007 | R |
| 475. | Warren Hacker (27) | 1.5081 | 1952 | R |
| 476. | Ray Collins (23) | 1.5082 | 1910 | L |
| 477. | Sherry Smith (28) | 1.5087 | 1919 | L |
| 478. | Frank Owen (25) | 1.5090 | 1905 | R |
| 479. | Pete Donohue (26) | 1.5105 | 1927 | R |
| 480. | Turk Farrell (31) | 1.5120 | 1965 | R |
| 481. | Dan Casey (25) | 1.5123 | 1888 | L |
| 482. | Curry Foley (24) | 1.5126 | 1880 | L |
| 483. | Deacon Phillippe (35) | 1.5140 | 1907 | R |
| 484. | Dizzy Dean+ (26) | 1.5143 | 1936 | R |
| Christy Mathewson+ (26) | 1.5143 | 1907 | R | |
| 486. | Al Demaree (31) | 1.5158 | 1916 | R |
| 487. | Greg Maddux (34) | 1.5160 | 2000 | R |
| 488. | Frank Miller (33) | 1.5174 | 1919 | R |
| 489. | Rick Mahler (34) | 1.5181 | 1988 | R |
| 490. | Greg Maddux (33) | 1.5182 | 1999 | R |
| 491. | Mark Buehrle (26) | 1.5211 | 2005 | L |
| Reb Russell (28) | 1.5211 | 1917 | L | |
| Jesse Tannehill (22) | 1.5211 | 1897 | L | |
| 494. | Ray Kolp (37) | 1.5219 | 1932 | R |
| 495. | Shane Reynolds (26) | 1.5242 | 1994 | R |
| 496. | Tony Mullane (23) | 1.5250 | 1882 | |
| 497. | Jesse Barnes (24) | 1.5254 | 1917 | R |
| 498. | Sherry Smith (33) | 1.5262 | 1924 | L |
| 499. | Jumbo McGinnis (31) | 1.5268 | 1885 | |
| 500. | Gil Heredia (33) | 1.5275 | 1999 | R |
Baseball Leaders & Baseball Records:
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Note that seasons prior to 1876 are not included in single-season marks, but are included in career marks.
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