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| First Basemen Single-Season On-Base Pct Leaderboard | |
| * - Indicates Hall of Fame
+ - indicates hit-less at-bats added to meet 502PA requirement. |
| Rank | Player | On-Base Pct | PA | Year | Career Leaderboard |
| 1. | Ferris Fain | .4901 | 560 | 1949 | |
| 2. | Lou Gehrig | .4699 | 664 | 1932 | |
| 3. | Ferris Fain | .4674 | 525 | 1950 | |
| 4. | Johnny Mize * | .4662 | 637 | 1938 | |
| 5. | Eddie Yost | .4620 | 658 | 1956 | |
| 6. | Earl Torgeson | .4612 | 645 | 1948 | |
| 7. | Jimmie Foxx * | .4566 | 530 | 1933 | |
| 8. | Johnny Mize * | .4562 | 697 | 1945 | |
| 9. | Chili Davis | .4494 | 672 | 1990 | |
| 10. | Jimmie Foxx * | .4475 | 686 | 1931 | |
| 11. | Earl Torgeson | .4453 | 522 | 1947 | |
| 12. | Earl Torgeson | .4422 | 631 | 1955 | |
| 13. | Ferris Fain | .4402 | 518 | 1951 | |
| 14. | Johnny Mize * | .4399 | 642 | 1937 | |
| 15. | Eddie Yost | .4366 | 571 | 1954 | |
| 16. | Jimmie Foxx * | .4358 | 693 | 1938 | |
| 17. | Elbie Fletcher | .4346 | 521 | 1939 | |
| 18. | Earl Torgeson | .4343 | 651 | 1954 | |
| 19. | John Mayberry | .4342 | 661 | 1975 | |
| 20. | Harry Heilmann | .4338 | 686 | 1930 | |
| 21. | Eddie Yost | .4327 | 687 | 1957 | |
| 22. | Vic Wertz | .4303 | 663 | 1950 | |
| 23. | Ferris Fain | .4302 | 686 | 1952 | |
| 24. | Jimmie Foxx * | .4296 | 668 | 1930 | |
| 25. | Jimmie Foxx * | .4296 | 689 | 1935 | |
| 26. | Johnny Mize * | .4270 | 637 | 1942 | |
| 27. | Charlie Keller | .4269 | 671 | 1949 | |
| 28. | Charlie Keller | .4266 | 642 | 1948 | |
| 29. | Del Bissonette | .4265 | 681 | 1930 | |
| 30. | Jimmie Foxx * | .4262 | 671 | 1934 | |
| 31. | Earl Torgeson | .4258 | 676 | 1949 | |
| 32. | Eddie Yost | .4254 | 673 | 1951 | |
| 33. | Earl Torgeson | .4250 | 649 | 1951 | |
| 34. | John Mayberry | .4250 | 680 | 1976 | |
| 35. | Johnny Hopp | .4242 | 534 | 1948 | |
| 36. | Earl Torgeson | .4232 | 667 | 1953 | |
| Lou Gehrig | .4232 | 665 | 1933 | ||
| 38. | Eddie Yost | .4226 | 670 | 1955 | |
| 39. | Ferris Fain | .4216 | 659 | 1957 | |
| 40. | Charlie Keller | .4213 | 508 | 1945 | |
| 41. | Ferris Fain | .4205 | 656 | 1955 | |
| 42. | Johnny Mize * | .4187 | 696 | 1943 | |
| 43. | Alvin Davis | .4184 | 643 | 1987 | |
| 44. | Earl Torgeson | .4182 | 650 | 1952 | |
| 45. | Hank Greenberg * | .4173 | 686 | 1938 | |
| 46. | Johnny Mize * | .4169 | 699 | 1946 | |
| 47. | Bobby Brown | .4168 | 538 | 1955 | |
| 48. | Earl Torgeson | .4158 | 685 | 1956 | |
| 49. | Earl Torgeson | .4153 | 616 | 1950 | |
| 50. | Ed Stevens | .4150 | 507 | 1949 | |
| 51. | Chili Davis | .4146 | 673 | 1989 | |
| 52. | John Mayberry | .4142 | 635 | 1974 | |
| 53. | Ferris Fain | .4140 | 558 | 1947 | |
| 54. | Ferris Fain | .4137 | 688 | 1958 | |
| 55. | Jimmie Foxx * | .4122 | 656 | 1932 | |
| 56. | Ferris Fain | .4118 | 724 | 1954 | |
| 57. | Jimmie Foxx * | .4113 | 688 | 1936 | |
| 58. | John Olerud | .4112 | 643 | 1990 | |
| 59. | John Mayberry | .4100 | 700 | 1977 | |
| 60. | Eddie Yost | .4099 | 675 | 1952 | |
| 61. | Nick Etten | .4091 | 534 | 1941 | |
| 62. | Hank Greenberg * | .4090 | 687 | 1942 | |
| 63. | Ron Santo | .4090 | 511 | 1966 | |
| 64. | Alvin Davis | .4086 | 674 | 1985 | |
| 65. | Del Bissonette | .4086 | 652 | 1935 | |
| 66. | Curt Blefary | .4081 | 621 | 1966 | |
| 67. | Johnny Mize * | .4080 | 703 | 1947 | |
| 68. | Buzz Arlett | .4076 | 712 | 1931 | |
| 69. | Aaron Pointer | .4070 | 601 | 1972 | |
| 70. | Ferris Fain | .4068 | 627 | 1948 | |
| 71. | Bobby Brown | .4065 | 674 | 1956 | |
| 72. | Johnny Mize * | .4065 | 711 | 1949 | |
| 73. | Hank Greenberg * | .4063 | 699 | 1944 | |
| 74. | Jimmie Foxx * | .4061 | 687 | 1937 | |
| 75. | Del Bissonette | .4061 | 660 | 1932 | |
| 76. | Johnny Mize * | .4060 | 665 | 1940 | |
| 77. | Wayne Belardi | .4060 | 633 | 1957 | |
| 78. | Hank Greenberg * | .4054 | 703 | 1941 | |
| 79. | Johnny Mize * | .4052 | 612 | 1939 | |
| 80. | Johnny Mize * | .4046 | 650 | 1941 | |
| 81. | Lou Gehrig | .4044 | 678 | 1930 | |
| 82. | Ripper Collins | .4042 | 625 | 1935 | |
| 83. | Johnny Hopp | .4039 | 612 | 1951 | |
| 84. | Johnny Hopp | .4037 | 706 | 1942 | |
| 85. | Nick Etten | .4036 | 512 | 1944 | |
| 86. | Bud Clancy | .4031 | 528 | 1931 | |
| 87. | Dale Alexander | .4028 | 648 | 1933 | |
| 88. | Vic Wertz | .4025 | 564 | 1955 | |
| 89. | Del Bissonette | .4023 | 606 | 1934 | |
| 90. | Bobby Brown | .4018 | 563 | 1952 | |
| 91. | Del Bissonette | .4015 | 688 | 1931 | |
| 92. | Johnny Hopp | .4014 | 728 | 1946 | |
| 93. | Hal Trosky | .4009 | 668 | 1938 | |
| 94. | Eddie Yost | .4006 | 671 | 1950 | |
| 95. | Ferris Fain | .4003 | 682 | 1953 | |
| 96. | Joe Adcock | .3997 | 629 | 1951 | |
| 97. | Earl Torgeson | .3996 | 540 | 1959 | |
| 98. | Lou Gehrig | .3994 | 687 | 1931 | |
| 99. | Hank Greenberg * | .3994 | 650 | 1945 | |
| 100. | Wally Backman | .3991 | 682 | 1988 | |
| 101. | Gordon Goldsberry | .3981 | 523 | 1954 | |
| 102. | Chili Davis | .3979 | 683 | 1988 | |
| 103. | Curt Blefary | .3979 | 656 | 1967 | |
| 104. | Clint Hurdle | .3978 | 654 | 1985 | |
| 105. | Ted Kluszewski * | .3973 | 672 | 1950 | |
| Johnny Mize * | .3973 | 672 | 1948 | ||
| 107. | Ron Santo | .3971 | 550 | 1964 | |
| 108. | Lou Gehrig | .3970 | 662 | 1934 | |
| 109. | Earl Torgeson | .3969 | 656 | 1957 | |
| 110. | Don Lenhardt | .3969 | 583 | 1950 | |
| 111. | Bill Terry | .3968 | 566 | 1933 | |
| 112. | Chili Davis | .3963 | 658 | 1986 | |
| 113. | Curt Blefary | .3962 | 683 | 1976 | |
| 114. | Buzz Arlett | .3953 | 685 | 1932 | |
| 115. | Ray Sanders | .3951 | 533 | 1948 | |
| 116. | Alvin Davis | .3951 | 648 | 1986 | |
| 117. | Gene Hasson | .3949 | 630 | 1940 | |
| 118. | Johnny Hopp | .3948 | 663 | 1944 | |
| 119. | Hank Greenberg * | .3948 | 586 | 1937 | |
| 120. | Hal Trosky | .3944+ | 496 | 1941 | |
| 121. | Ferris Fain | .3941 | 651 | 1959 | |
| 122. | John Mayberry | .3941 | 710 | 1978 | |
| 123. | Al Woods | .3939 | 564 | 1989 | |
| 124. | Jim Gentile | .3938 | 584 | 1962 | |
| 125. | Chili Davis | .3938 | 640 | 1985 | |
| 126. | Vic Wertz | .3933 | 662 | 1954 | |
| 127. | Joe Hauser | .3933 | 686 | 1930 | |
| 128. | Clint Hurdle | .3931 | 641 | 1982 | |
| Fred Sington | .3931 | 641 | 1945 | ||
| 130. | Hank Greenberg * | .3929 | 713 | 1936 | |
| 131. | Johnny Hopp | .3926 | 686 | 1949 | |
| 132. | Eddie Yost | .3923 | 675 | 1959 | |
| 133. | Del Bissonette | .3921 | 534 | 1936 | |
| 134. | Jack Bolling | .3920 | 603 | 1942 | |
| 135. | Elbie Fletcher | .3919 | 569 | 1940 | |
| 136. | Charlie Keller | .3918 | 684 | 1943 | |
| 137. | Buddy Hassett | .3918 | 659 | 1943 | |
| 138. | Nick Etten | .3913 | 537 | 1945 | |
| 139. | Al Gionfriddo | .3910 | 672 | 1953 | |
| 140. | Johnny Hopp | .3909 | 640 | 1941 | |
| 141. | Gene Hasson | .3908 | 564 | 1944 | |
| 142. | Johnny Hopp | .3907 | 581 | 1943 | |
| 143. | Joe Adcock | .3906 | 658 | 1955 | |
| 144. | Ted Kluszewski * | .3905 | 653 | 1949 | |
| 145. | Joe Adcock | .3900 | 642 | 1958 | |
| 146. | Buzz Arlett | .3899 | 614 | 1933 | |
| 147. | Bobby Brown | .3898 | 552 | 1950 | |
| 148. | Ed Stevens | .3892 | 527 | 1950 | |
| 149. | Steve Bilko | .3890 | 640 | 1961 | |
| 150. | Alvin Davis | .3887 | 638 | 1990 | |
| Dale Alexander | .3887 | 638 | 1932 | ||
| 152. | Charlie Keller | .3883 | 704 | 1950 | |
| 153. | Johnny Mize * | .3881 | 674 | 1944 | |
| 154. | Eddie Yost | .3880 | 701 | 1958 | |
| 155. | Lou Gehrig | .3880 | 666 | 1935 | |
| 156. | Ed Morgan | .3879 | 631 | 1933 | |
| 157. | Don Lenhardt | .3879 | 546 | 1955 | |
| 158. | Curt Blefary | .3879 | 642 | 1973 | |
| 159. | Curt Blefary | .3878 | 673 | 1972 | |
| 160. | John Herrnstein | .3878 | 521 | 1974 | |
| 161. | Gene Hasson | .3872+ | 485 | 1945 | |
| 162. | Mark Grace | .3872 | 548 | 1990 | |
| 163. | Merv Connors | .3871 | 670 | 1941 | |
| 164. | Norm Cash | .3869 | 641 | 1961 | |
| 165. | Elbie Fletcher | .3868 | 567 | 1941 | |
| 166. | Johnny Hopp | .3861 | 679 | 1945 | |
| 167. | Bobby Brown | .3860 | 659 | 1951 | |
| 168. | Charlie Keller | .3860 | 616 | 1944 | |
| 169. | Rusty Staub | .3859 | 540 | 1976 | |
| 170. | Buddy Hassett | .3857 | 633 | 1939 | |
| 171. | Ferris Fain | .3857 | 674 | 1956 | |
| 172. | Jack Bolling | .3856 | 613 | 1944 | |
| 173. | Fred Sington | .3854 | 662 | 1940 | |
| 174. | Buzz Arlett | .3853 | 641 | 1934 | |
| 175. | Tony Solaita | .3849 | 504 | 1974 | |
| 176. | Curt Blefary | .3840 | 638 | 1968 | |
| 177. | Norm Cash | .3840 | 625 | 1965 | |
| Elbie Fletcher | .3840+ | 493 | 1943 | ||
| Buddy Hassett | .3840 | 627 | 1942 | ||
| 180. | Jack Bolling | .3838 | 595 | 1940 | |
| 181. | Don Lenhardt | .3834 | 657 | 1953 | |
| 182. | Dale Alexander | .3832 | 668 | 1935 | |
| 183. | Bud Clancy | .3832 | 544 | 1933 | |
| 184. | Buddy Hassett | .3831 | 654 | 1938 | |
| Joe Hauser | .3831 | 651 | 1933 | ||
| 186. | Al Gionfriddo | .3828 | 656 | 1948 | |
| 187. | Charlie Keller | .3828 | 548 | 1947 | |
| 188. | Al Gionfriddo | .3827 | 698 | 1952 | |
| 189. | Charlie Keller | .3827 | 669 | 1942 | |
| 190. | Eddie Yost | .3826 | 660 | 1953 | |
| 191. | John Olerud | .3825+ | 487 | 1989 | |
| 192. | Joe Hauser | .3820 | 658 | 1931 | |
| 193. | Carl Yastrzemski | .3817 | 634 | 1968 | |
| 194. | Al Gionfriddo | .3817 | 663 | 1954 | |
| 195. | Don Hurst | .3816 | 567 | 1932 | |
| 196. | Elbie Fletcher | .3816 | 610 | 1938 | |
| 197. | Ted Kluszewski * | .3814 | 687 | 1951 | |
| Hank Greenberg * | .3814 | 687 | 1940 | ||
| 199. | Charlie Grimm | .3813 | 676 | 1930 | |
| 200. | Eddie Lukon | .3811 | 511 | 1952 | |
| 201. | Merv Connors | .3810 | 601 | 1942 | |
| 202. | Charlie Keller | .3809 | 681 | 1940 | |
| 203. | Elbie Fletcher | .3808+ | 474 | 1945 | |
| 204. | Rusty Staub | .3806 | 519 | 1978 | |
| 205. | Ed Morgan | .3805 | 586 | 1931 | |
| 206. | Rusty Staub | .3804 | 644 | 1975 | |
| 207. | Mark McGwire | .3804 | 674 | 1988 | |
| 208. | Ray Sanders | .3800+ | 466 | 1946 | |
| 209. | Johnny Hopp | .3799 | 692 | 1947 | |
| 210. | Hal Trosky | .3798 | 645 | 1937 | |
| 211. | Claudell Washington | .3798 | 575 | 1982 | |
| 212. | Dale Alexander | .3793 | 676 | 1936 | |
| 213. | Chili Davis | .3792+ | 484 | 1987 | |
| 214. | Wayne Belardi | .3789 | 637 | 1961 | |
| 215. | Merv Connors | .3789 | 676 | 1943 | |
| 216. | Alvin Davis | .3787 | 648 | 1989 | |
| 217. | Alvin Davis | .3786 | 655 | 1984 | |
| 218. | Mickey Vernon | .3785 | 540 | 1942 | |
| 219. | Al Woods | .3785 | 577 | 1987 | |
| 220. | Bobby Brown | .3778 | 578 | 1953 | |
| 221. | Pinky Whitney | .3776 | 625 | 1936 | |
| 222. | Gene Hasson | .3775 | 613 | 1938 | |
| 223. | Curt Blefary | .3773 | 538 | 1971 | |
| 224. | Mike Epstein | .3772+ | 472 | 1970 | |
| 225. | Ripper Collins | .3770 | 621 | 1933 | |
| 226. | Sam Leslie | .3769 | 587 | 1935 | |
| 227. | Connie Ryan | .3768 | 621 | 1946 | |
| 228. | Charlie Grimm | .3767 | 675 | 1931 | |
| 229. | Ted Kluszewski * | .3766 | 550 | 1959 | |
| 230. | Johnny Mize * | .3765+ | 449 | 1936 | |
| 231. | Clint Hurdle | .3761 | 670 | 1984 | |
| 232. | Hal Trosky | .3760 | 641 | 1936 | |
| 233. | Connie Ryan | .3755+ | 486 | 1950 | |
| 234. | Buddy Hassett | .3750 | 657 | 1941 | |
| 235. | Aaron Pointer | .3748 | 715 | 1969 | |
| 236. | Norm Cash | .3746 | 646 | 1962 | |
| 237. | Ripper Collins | .3746 | 640 | 1934 | |
| 238. | Eddie Yost | .3744 | 642 | 1960 | |
| 239. | Ray Sanders | .3743 | 517 | 1947 | |
| 240. | Ray Sanders | .3740 | 525 | 1943 | |
| 241. | Chili Davis | .3740 | 639 | 1983 | |
| 242. | Gene Hasson | .3740 | 632 | 1947 | |
| 243. | Joe Kuhel | .3740 | 626 | 1931 | |
| 244. | Don Lenhardt | .3740 | 616 | 1951 | |
| 245. | Clint Hurdle | .3739 | 690 | 1987 | |
| 246. | Carl Yastrzemski | .3736 | 645 | 1970 | |
| 247. | Bill Terry | .3736 | 615 | 1930 | |
| 248. | Tony Solaita | .3735 | 700 | 1981 | |
| 249. | Aaron Pointer | .3735 | 657 | 1966 | |
| 250. | Ted Kluszewski * | .3734 | 699 | 1952 | |
| 251. | Jack Bolling | .3734 | 685 | 1945 | |
| 252. | Carl Yastrzemski | .3733 | 601 | 1964 | |
| 253. | Ken Phelps | .3733 | 502 | 1986 | |
| Nick Etten | .3733+ | 499 | 1942 | ||
| 255. | Dale Alexander | .3731 | 662 | 1931 | |
| 256. | Del Bissonette | .3731 | 654 | 1933 | |
| 257. | Curt Blefary | .3731 | 595 | 1974 | |
| 258. | Eddie Lukon | .3731 | 646 | 1951 | |
| 259. | Billy Klaus | .3727+ | 476 | 1960 | |
| Eddie Lukon | .3727 | 503 | 1953 | ||
| 261. | Ripper Collins | .3727 | 543 | 1939 | |
| 262. | Gene Hasson | .3726 | 585 | 1941 | |
| 263. | Carl Yastrzemski | .3724 | 616 | 1967 | |
| 264. | Max West | .3720 | 629 | 1944 | |
| 265. | Hank Greenberg * | .3716 | 665 | 1939 | |
| 266. | Hank Greenberg * | .3716 | 703 | 1935 | |
| 267. | Dale Alexander | .3716 | 655 | 1930 | |
| 268. | Merv Connors | .3715 | 646 | 1940 | |
| 269. | Gene Hasson | .3714 | 632 | 1946 | |
| 270. | Merv Connors | .3714 | 662 | 1946 | |
| 271. | Aaron Pointer | .3713+ | 467 | 1974 | |
| 272. | Bud Clancy | .3712 | 534 | 1932 | |
| 273. | Mickey Vernon | .3710 | 567 | 1947 | |
| 274. | Jim Holt | .3710 | 622 | 1974 | |
| Del Bissonette | .3710 | 620 | 1937 | ||
| Ed Morgan | .3710 | 561 | 1932 | ||
| 277. | Floyd Robinson | .3709 | 651 | 1962 | |
| 278. | Curt Blefary | .3709 | 585 | 1969 | |
| 279. | Earl Torgeson | .3709 | 668 | 1958 | |
| 280. | Johnny Hopp | .3708 | 510 | 1952 | |
| 281. | Ed Stevens | .3707+ | 491 | 1953 | |
| 282. | Don Hurst | .3707 | 642 | 1930 | |
| 283. | Jack Bolling | .3705 | 561 | 1950 | |
| 284. | Eddie Lukon | .3704 | 630 | 1956 | |
| 285. | Johnny Mize * | .3704 | 594 | 1950 | |
| 286. | Jason Thompson | .3702 | 651 | 1985 | |
| 287. | Joe Adcock | .3700 | 673 | 1954 | |
| 288. | Clint Hurdle | .3698 | 650 | 1986 | |
| 289. | Curt Blefary | .3696 | 690 | 1975 | |
| 290. | Bobby Brown | .3695+ | 468 | 1954 | |
| 291. | Rafael Palmeiro | .3692 | 643 | 1989 | |
| 292. | Jack Bolling | .3692 | 578 | 1946 | |
| 293. | Tommy Henrich | .3691 | 635 | 1941 | |
| 294. | Carl Yastrzemski | .3689 | 637 | 1969 | |
| Ron Santo | .3689 | 637 | 1965 | ||
| 296. | Harry Heilmann | .3689 | 676 | 1931 | |
| 297. | Steve Kemp | .3689 | 705 | 1988 | |
| 298. | Norm Cash | .3688 | 667 | 1963 | |
| 299. | Jack Bolling | .3687 | 599 | 1948 | |
| 300. | Zeke Bonura | .3687 | 651 | 1941 |
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