Dennis Eckersley has given up the most career home runs against left-handed batters in the month of July, with 43 HR.
| NAME | HR | G | SO | H | BB | HBP | IBB | K/BB | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | D. Eckersley | 43 | 169 | 165 | 291 | 76 | 6 | 14 | 2.17 |
| 2 | | J. Shields | 41 | 72 | 181 | 261 | 86 | 5 | 5 | 2.10 |
| 3 |  | B. Colon | 39 | 96 | 207 | 340 | 102 | 6 | 7 | 2.03 |
| 4 |  | J. Verlander | 35 | 88 | 300 | 240 | 93 | 4 | 3 | 3.23 |
| 5 | | B. Arroyo | 35 | 58 | 98 | 206 | 47 | 9 | 6 | 2.09 |
| 6 | | D. Cone | 35 | 69 | 230 | 228 | 121 | 7 | 6 | 1.90 |
| 7 |  | R. Clemens | 35 | 126 | 395 | 398 | 187 | 15 | 9 | 2.11 |
| 8 | | D. Martinez | 35 | 109 | 191 | 323 | 93 | 2 | 10 | 2.05 |
| 9 | | B. Blyleven | 35 | 96 | 269 | 352 | 117 | 7 | 4 | 2.30 |
| 10 | | D. Alexander | 34 | 86 | 100 | 272 | 90 | 7 | 9 | 1.11 |
| 11 | | P. Astacio | 33 | 68 | 120 | 197 | 92 | 4 | 10 | 1.30 |
| 12 | | S. Sanderson | 33 | 75 | 107 | 221 | 54 | 3 | 7 | 1.98 |
| 13 | | J. Guthrie | 32 | 49 | 104 | 202 | 65 | 7 | 6 | 1.60 |
| 14 | | J. Peavy | 32 | 57 | 162 | 175 | 72 | 7 | 9 | 2.25 |
| 15 |  | B. Radke | 31 | 62 | 131 | 256 | 43 | 10 | 2 | 3.05 |
| 16 | | A. Sele | 31 | 75 | 136 | 254 | 84 | 7 | 3 | 1.62 |
| 17 | | K. Lohse | 30 | 78 | 117 | 241 | 77 | 4 | 3 | 1.52 |
| 18 | | J. Vazquez | 30 | 72 | 199 | 208 | 68 | 5 | 3 | 2.93 |
| 19 | | L. Hernandez | 30 | 87 | 171 | 259 | 98 | 6 | 6 | 1.74 |
| 20 | | D. Lowe | 30 | 109 | 114 | 281 | 71 | 10 | 7 | 1.61 |
| 21 | | M. Mussina | 30 | 87 | 252 | 303 | 78 | 1 | 3 | 3.23 |
| 22 | | C. Hough | 30 | 123 | 160 | 271 | 126 | 9 | 1 | 1.27 |
| 23 |  | M. Scherzer | 29 | 75 | 240 | 204 | 90 | 9 | 3 | 2.67 |
| 24 |  | G. Maddux | 29 | 126 | 300 | 408 | 91 | 10 | 11 | 3.30 |
| 25 |  | C. Morton | 28 | 68 | 185 | 175 | 85 | 21 | 4 | 2.18 |
StatMuse has event-level data for home runs allowed going back to the 1974 season.
Some of the information used here was obtained free of charge from Retrosheet.
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