Barry Bonds has the most walks for the Pirates against left-handed pitchers in a season, with 55 bases on balls in 1992.
| NAME | BB | SEASON | TM | G | AB | H | 2B | 3B | HR | RBI | HBP | SO | PA | TB | XBH | SH | SF | IBB | AVG | OBP | SLG | OPS | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | B. Bonds | 55 | 1992 | 118 | 222 | 69 | 19 | 3 | 13 | 44 | 2 | 35 | 283 | 133 | 35 | 0 | 4 | 9 | .311 | .445 | .599 | 1.044 | |
| 2 |  | J. Bell | 34 | 1990 | 113 | 251 | 69 | 13 | 4 | 2 | 17 | 0 | 42 | 302 | 96 | 19 | 15 | 2 | 0 | .275 | .359 | .382 | .741 | |
| 3 | | J. Bell | 33 | 1993 | 93 | 190 | 65 | 14 | 2 | 3 | 21 | 4 | 30 | 228 | 92 | 19 | 1 | 0 | 4 | .342 | .449 | .484 | .934 | |
| 4 | | R. Zisk | 33 | 1975 | 93 | 195 | 65 | 11 | 1 | 4 | 28 | 0 | 32 | 232 | 90 | 16 | 0 | 4 | 9 | .333 | .422 | .462 | .884 | |
| 5 | | R. Zisk | 33 | 1974 | 78 | 170 | 57 | 9 | 0 | 12 | 34 | 0 | 21 | 205 | 102 | 21 | 0 | 2 | 4 | .335 | .439 | .600 | 1.039 | |
| 6 | | B. Bonds | 32 | 1991 | 119 | 201 | 57 | 13 | 2 | 7 | 39 | 3 | 30 | 239 | 95 | 22 | 0 | 3 | 3 | .284 | .385 | .473 | .858 | |
| 7 | | P. Garner | 32 | 1978 | 93 | 190 | 47 | 11 | 2 | 4 | 25 | 1 | 25 | 227 | 74 | 17 | 2 | 2 | 7 | .247 | .356 | .389 | .745 | |
| 8 | | J. Bay | 31 | 2006 | 71 | 138 | 42 | 8 | 2 | 9 | 30 | 0 | 39 | 171 | 81 | 19 | 0 | 2 | 1 | .304 | .427 | .587 | 1.014 | |
| 9 | | B. Bonds | 31 | 1990 | 121 | 240 | 73 | 14 | 2 | 17 | 58 | 3 | 41 | 277 | 142 | 33 | 0 | 3 | 5 | .304 | .386 | .592 | .978 | |
| 10 | | B. Bonds | 31 | 1989 | 99 | 178 | 47 | 14 | 1 | 4 | 24 | 1 | 33 | 213 | 75 | 19 | 0 | 3 | 0 | .264 | .371 | .421 | .792 | |
| 11 | | J. Thompson | 31 | 1982 | 90 | 152 | 35 | 7 | 0 | 1 | 16 | 1 | 36 | 188 | 45 | 8 | 0 | 4 | 2 | .230 | .356 | .296 | .652 | |
| 12 | | B. Bonilla | 29 | 1988 | 108 | 212 | 59 | 10 | 1 | 6 | 29 | 2 | 20 | 246 | 89 | 17 | 0 | 3 | 8 | .278 | .366 | .420 | .786 | |
| 13 | | B. Bonds | 29 | 1986 | 76 | 151 | 33 | 10 | 2 | 3 | 14 | 1 | 39 | 182 | 56 | 15 | 1 | 0 | 0 | .219 | .348 | .371 | .719 | |
| 14 | | B. Bonilla | 28 | 1989 | 114 | 221 | 50 | 10 | 1 | 8 | 30 | 0 | 28 | 252 | 86 | 19 | 0 | 3 | 8 | .226 | .310 | .389 | .699 | |
| 15 | | J. Bay | 27 | 2005 | 72 | 150 | 52 | 14 | 3 | 7 | 26 | 0 | 28 | 178 | 93 | 24 | 0 | 1 | 4 | .347 | .444 | .620 | 1.064 | |
| 16 | | B. Giles | 27 | 1999 | 91 | 177 | 53 | 10 | 1 | 9 | 28 | 1 | 30 | 206 | 92 | 20 | 0 | 1 | 0 | .299 | .393 | .520 | .913 | |
| 17 | | G. Redus | 27 | 1990 | 80 | 202 | 53 | 15 | 3 | 6 | 23 | 1 | 29 | 236 | 92 | 24 | 1 | 5 | 0 | .262 | .345 | .455 | .800 | |
| 18 |  | A. McCutchen | 26 | 2023 | 66 | 134 | 35 | 8 | 0 | 4 | 14 | 1 | 28 | 162 | 55 | 12 | 0 | 1 | 0 | .261 | .383 | .410 | .793 | |
| 19 | | B. Giles | 26 | 2002 | 88 | 143 | 33 | 9 | 1 | 8 | 29 | 2 | 26 | 172 | 68 | 18 | 0 | 1 | 2 | .231 | .355 | .476 | .830 | |
| 20 | | J. Bell | 26 | 1992 | 105 | 238 | 77 | 19 | 4 | 1 | 20 | 3 | 42 | 271 | 107 | 24 | 3 | 1 | 0 | .324 | .396 | .450 | .845 | |
| 21 | | J. Bell | 26 | 1991 | 97 | 194 | 56 | 13 | 5 | 6 | 28 | 0 | 18 | 224 | 97 | 24 | 3 | 1 | 1 | .289 | .371 | .500 | .871 | |
| 22 | | A. Van Slyke | 26 | 1990 | 96 | 188 | 49 | 3 | 2 | 5 | 28 | 0 | 35 | 217 | 71 | 10 | 2 | 1 | 1 | .261 | .349 | .378 | .726 | |
| 23 | | O. Moreno | 26 | 1978 | 86 | 174 | 25 | 5 | 0 | 1 | 14 | 2 | 52 | 209 | 33 | 6 | 6 | 1 | 0 | .144 | .261 | .190 | .451 | |
| 24 |  | B. Reynolds | 25 | 2026 | 109 | 207 | 58 | 14 | 0 | 7 | 33 | 2 | 51 | 234 | 93 | 21 | 0 | 0 | 0 | .280 | .363 | .449 | .813 | |
| 25 | | B. Bonilla | 25 | 1991 | 120 | 232 | 66 | 13 | 1 | 14 | 47 | 0 | 23 | 261 | 123 | 28 | 0 | 4 | 6 | .284 | .349 | .530 | .879 | |
PITStatMuse has event-level data for walks going back to the 1974 season.
Some of the information used here was obtained free of charge from Retrosheet.
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