Since 1903, the New York Yankees have their worst on-base percentage with 8+ games played in Octobers, with an on-base percentage of .319.
| TEAM | OBP | G | MONTH | W% | W | L | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | SLG | OPS | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Yankees | .319 | 226 | October | .531 | 119 | 105 | 7,492 | 917 | 1,872 | 290 | 74 | 148 | 707 | 69 | 221 | 31 | 8,392 | 2,754 | 512 | 96 | 28 | 29 | 99 | .250 | .368 | .687 | ||
| 2 | | Yankees | .334 | 3,272 | September | .578 | 1,881 | 1,371 | 110,356 | 15,321 | 28,827 | 4,724 | 915 | 2,786 | 11,467 | 816 | 2,019 | 416 | 124,671 | 43,739 | 8,425 | 1,603 | 495 | 481 | 1,731 | .261 | .396 | .730 | ||
| 3 | | Yankees | .338 | 3,554 | August | .555 | 1,965 | 1,576 | 121,512 | 17,001 | 32,384 | 5,295 | 1,022 | 3,227 | 12,580 | 903 | 2,049 | 517 | 137,376 | 49,404 | 9,544 | 1,840 | 576 | 531 | 1,990 | .267 | .407 | .745 | ||
| 4 | | Yankees | .339 | 2,016 | April | .563 | 1,131 | 878 | 68,180 | 9,644 | 17,722 | 3,108 | 490 | 1,831 | 8,973 | 7,794 | 577 | 1,281 | 398 | 77,871 | 27,303 | 5,429 | 889 | 431 | 335 | 1,310 | .260 | .400 | .739 | |
| 5 | | Yankees | .340 | 3,233 | May | .579 | 1,859 | 1,354 | 110,109 | 15,845 | 29,114 | 4,888 | 976 | 2,928 | 11,962 | 872 | 2,097 | 505 | 125,122 | 44,738 | 8,792 | 1,617 | 597 | 496 | 1,850 | .264 | .406 | .746 | ||
| 6 | | Yankees | .340 | 3,288 | June | .566 | 1,856 | 1,421 | 112,853 | 16,362 | 30,225 | 4,947 | 986 | 3,193 | 11,928 | 770 | 1,963 | 493 | 127,774 | 46,723 | 9,126 | 1,683 | 568 | 514 | 1,812 | .268 | .414 | .754 | ||
| 7 | | Yankees | .343 | 3,447 | July | .576 | 1,976 | 1,456 | 118,428 | 17,386 | 32,127 | 5,357 | 1,054 | 3,158 | 12,190 | 942 | 2,021 | 490 | 134,005 | 49,066 | 9,569 | 1,935 | 579 | 455 | 1,892 | .271 | .414 | .757 | ||
| 8 | | Yankees | .370 | 18 | March | .778 | 14 | 4 | 603 | 119 | 161 | 28 | 2 | 40 | 114 | 93 | 10 | 149 | 5 | 1 | 715 | 313 | 70 | 2 | 7 | 1 | 19 | .267 | .519 | .889 |
Some of the information used here was obtained free of charge from Retrosheet.
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