Since 1994, Frank Thomas has the best on-base percentage in the AL in a season, with an on-base percentage of .487 in 1994.
Interpreted as:
highest obp with a minimum of 3.1 PA per team game by american league player in a season since 1994| NAME | OBP | SEASON | TM | G | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | SLG | OPS | wRC | WRAA | wOBA | wRC+ | BRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | F. Thomas | .487 | 1994 | 113 | 399 | 106 | 141 | 34 | 1 | 38 | 101 | 109 | 2 | 61 | 2 | 3 | 517 | 291 | 73 | 0 | 7 | 12 | 15 | .353 | .729 | 1.217 | 138 | 72.3 | .499 | 205 | 71.9 | |
| 2 |  | E. Martinez | .479 | 1995 | 145 | 511 | 121 | 182 | 52 | 0 | 29 | 113 | 116 | 8 | 87 | 4 | 3 | 639 | 321 | 81 | 0 | 4 | 19 | 11 | .356 | .628 | 1.107 | 152 | 72.5 | .469 | 182 | 68.8 | |
| 3 | | J. Giambi | .477 | 2001 | 154 | 520 | 109 | 178 | 47 | 2 | 38 | 120 | 129 | 13 | 83 | 2 | 0 | 671 | 343 | 87 | 0 | 9 | 24 | 17 | .342 | .660 | 1.137 | 162 | 78.3 | .465 | 193 | 78.7 | |
| 4 | | J. Giambi | .476 | 2000 | 152 | 510 | 108 | 170 | 29 | 1 | 43 | 137 | 137 | 9 | 96 | 2 | 0 | 664 | 330 | 73 | 0 | 8 | 6 | 9 | .333 | .647 | 1.123 | 163 | 75.5 | .471 | 182 | 74.3 | |
| 5 | | C. Delgado | .470 | 2000 | 162 | 569 | 115 | 196 | 57 | 1 | 41 | 137 | 123 | 15 | 104 | 0 | 1 | 711 | 378 | 99 | 0 | 4 | 18 | 12 | .344 | .664 | 1.134 | 174 | 81 | .471 | 179 | 76 | |
| 6 |  | M. McGwire | .467 | 1996 | 130 | 423 | 104 | 132 | 21 | 0 | 52 | 113 | 116 | 8 | 112 | 0 | 0 | 548 | 309 | 73 | 0 | 1 | 16 | 14 | .312 | .730 | 1.198 | 142 | 71.8 | .489 | 190 | 68.5 | |
| 7 | | E. Martinez | .464 | 1996 | 139 | 499 | 121 | 163 | 52 | 2 | 26 | 103 | 123 | 8 | 84 | 3 | 3 | 634 | 297 | 80 | 0 | 4 | 12 | 15 | .327 | .595 | 1.059 | 144 | 62.2 | .450 | 164 | 56 | |
| 8 | | P. O'Neill | .460 | 1994 | 103 | 368 | 68 | 132 | 25 | 1 | 21 | 83 | 72 | 0 | 56 | 5 | 4 | 443 | 222 | 47 | 0 | 3 | 13 | 16 | .359 | .603 | 1.064 | 100 | 43.6 | .450 | 172 | 42.1 | |
| 9 |  | M. Trout | .460 | 2018 | 140 | 471 | 101 | 147 | 24 | 4 | 39 | 79 | 122 | 10 | 124 | 24 | 2 | 607 | 296 | 67 | 0 | 4 | 25 | 5 | .312 | .628 | 1.088 | 136 | 65.3 | .447 | 189 | 64.4 | |
| 10 | | F. Thomas | .459 | 1996 | 141 | 527 | 110 | 184 | 26 | 0 | 40 | 134 | 109 | 5 | 70 | 1 | 1 | 649 | 330 | 66 | 0 | 8 | 26 | 25 | .349 | .626 | 1.085 | 148 | 64.3 | .451 | 167 | 60.4 | |
| 11 |  | A. Judge | .458 | 2024 | 158 | 559 | 122 | 180 | 36 | 1 | 58 | 144 | 133 | 9 | 171 | 10 | 0 | 703 | 392 | 95 | 0 | 2 | 20 | 22 | .322 | .701 | 1.159 | 176 | 93.7 | .476 | 220 | 96.3 | |
| 12 |  | M. Ramirez | .457 | 2000 | 118 | 439 | 92 | 154 | 34 | 2 | 38 | 122 | 86 | 3 | 117 | 1 | 1 | 532 | 306 | 74 | 0 | 4 | 9 | 9 | .351 | .697 | 1.154 | 133 | 63 | .477 | 181 | 58.6 | |
| 13 | | A. Judge | .457 | 2025 | 152 | 541 | 137 | 179 | 30 | 2 | 53 | 114 | 124 | 7 | 160 | 12 | 5 | 679 | 372 | 85 | 0 | 7 | 36 | 16 | .331 | .688 | 1.144 | 163 | 82.5 | .463 | 203 | 82.7 | |
| 14 | | F. Thomas | .456 | 1997 | 146 | 530 | 110 | 184 | 35 | 0 | 35 | 125 | 109 | 3 | 69 | 1 | 1 | 649 | 324 | 70 | 0 | 7 | 9 | 15 | .347 | .611 | 1.067 | 146 | 66 | .454 | 179 | 65.5 | |
| 15 | | E. Martinez | .456 | 1997 | 155 | 542 | 104 | 179 | 35 | 1 | 28 | 108 | 119 | 11 | 86 | 2 | 4 | 678 | 300 | 64 | 0 | 6 | 11 | 21 | .330 | .554 | 1.009 | 142 | 58.6 | .436 | 164 | 55.5 | |
| 16 | | F. Thomas | .454 | 1995 | 145 | 493 | 102 | 152 | 27 | 0 | 40 | 111 | 136 | 6 | 74 | 3 | 2 | 647 | 299 | 67 | 0 | 12 | 29 | 14 | .308 | .606 | 1.061 | 139 | 58.3 | .441 | 168 | 57.8 | |
| 17 |  | M. Ramirez | .450 | 2002 | 120 | 436 | 84 | 152 | 31 | 0 | 33 | 107 | 73 | 8 | 85 | 0 | 0 | 518 | 282 | 64 | 0 | 1 | 14 | 13 | .349 | .647 | 1.097 | 119 | 57.1 | .459 | 185 | 54.3 | |
| 18 |  | J. Thome | .450 | 1996 | 151 | 505 | 122 | 157 | 28 | 5 | 38 | 116 | 123 | 6 | 141 | 2 | 2 | 636 | 309 | 71 | 0 | 2 | 8 | 13 | .311 | .612 | 1.062 | 144 | 62.2 | .450 | 162 | 55.1 | |
| 19 | | C. Knoblauch | .448 | 1996 | 153 | 578 | 140 | 197 | 35 | 14 | 13 | 72 | 98 | 19 | 74 | 45 | 14 | 701 | 299 | 62 | 0 | 6 | 6 | 9 | .341 | .517 | .965 | 142 | 51.9 | .422 | 145 | 44.1 | |
| 20 |  | M. Cabrera | .448 | 2011 | 161 | 572 | 111 | 197 | 48 | 0 | 30 | 105 | 108 | 3 | 89 | 2 | 1 | 688 | 335 | 78 | 0 | 5 | 22 | 24 | .344 | .586 | 1.033 | 143 | 66.1 | .437 | 177 | 61.8 | |
| 21 | | E. Martinez | .447 | 1999 | 142 | 502 | 86 | 169 | 35 | 1 | 24 | 86 | 97 | 6 | 99 | 7 | 2 | 608 | 278 | 60 | 0 | 3 | 6 | 12 | .337 | .554 | 1.001 | 128 | 48.8 | .433 | 161 | 49.8 | |
| 22 |  | J. Bautista | .447 | 2011 | 149 | 513 | 105 | 155 | 24 | 2 | 43 | 103 | 132 | 6 | 111 | 9 | 5 | 655 | 312 | 69 | 0 | 4 | 24 | 8 | .302 | .608 | 1.056 | 139 | 65.6 | .443 | 181 | 61.5 | |
| 23 | | J. Thome | .445 | 2002 | 147 | 480 | 101 | 146 | 19 | 2 | 52 | 118 | 122 | 5 | 139 | 1 | 2 | 613 | 325 | 73 | 0 | 6 | 18 | 5 | .304 | .677 | 1.122 | 142 | 68.3 | .461 | 189 | 67.1 | |
| 24 |  | D. Ortiz | .445 | 2007 | 149 | 549 | 116 | 182 | 52 | 1 | 35 | 117 | 111 | 4 | 103 | 3 | 1 | 667 | 341 | 88 | 0 | 3 | 12 | 16 | .332 | .621 | 1.066 | 149 | 66.2 | .449 | 175 | 62.6 | |
| 25 | | J. Mauer | .444 | 2009 | 138 | 523 | 94 | 191 | 30 | 1 | 28 | 96 | 76 | 2 | 63 | 4 | 1 | 606 | 307 | 59 | 0 | 5 | 14 | 13 | .365 | .587 | 1.031 | 127 | 54.8 | .438 | 170 | 53.2 | |
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