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| "O" Batting Register | |
| Pitching Register | Batting Glossary |
| Player | From-To | G | AB | R | H | 2B | 3B | HR | RBI | SB | CS | BB | SO | AVG | OBP | SLG | OPS | OWS |
| Johnny Oates | 1977-1977 | 95 | 172 | 17 | 45 | 4 | 1 | 0 | 15 | 0 | 2 | 12 | 11 | .262 | .312 | .297 | .608 | 1.0 |
| Sherman Obando | 1994-2005 | 1191 | 3725 | 453 | 926 | 143 | 10 | 82 | 384 | 0 | 0 | 411 | 1109 | .249 | .332 | .358 | .691 | 47.8 |
| Ken Oberkfell | 1980-1984 | 356 | 1008 | 107 | 240 | 54 | 11 | 5 | 96 | 10 | 16 | 83 | 139 | .238 | .295 | .328 | .624 | 14.0 |
| Wes Obermueller | 2004-2005 | 72 | 146 | 12 | 14 | 5 | 0 | 0 | 12 | 0 | 0 | 6 | 70 | .096 | .132 | .130 | .262 | 0.0 |
| Mike O'Berry | 1984-1984 | 65 | 111 | 11 | 20 | 6 | 1 | 2 | 11 | 0 | 0 | 17 | 32 | .180 | .285 | .306 | .591 | 0.2 |
| Alex Ochoa | 1996-2004 | 834 | 2521 | 334 | 613 | 170 | 23 | 31 | 305 | 0 | 4 | 240 | 533 | .243 | .308 | .366 | .674 | 21.2 |
| Bryan Oelkers | 1988-1988 | 11 | 16 | 0 | 3 | 1 | 0 | 0 | 3 | 0 | 0 | 0 | 3 | .188 | .188 | .250 | .438 | 0.0 |
| Ron Oester | 1979-1992 | 1926 | 6793 | 879 | 1976 | 359 | 59 | 98 | 759 | 13 | 12 | 692 | 1218 | .291 | .355 | .404 | .760 | 188.3 |
| Jose Offerman | 1996-1997 | 39 | 42 | 13 | 9 | 3 | 0 | 1 | 3 | 0 | 0 | 4 | 10 | .214 | .283 | .357 | .640 | 0.0 |
| Rowland Office | 1974-1980 | 293 | 401 | 38 | 101 | 6 | 1 | 8 | 54 | 1 | 2 | 23 | 43 | .252 | .298 | .332 | .630 | 4.6 |
| Chad Ogea | 1999-2004 | 177 | 124 | 5 | 8 | 3 | 0 | 0 | 9 | 0 | 0 | 8 | 54 | .065 | .121 | .089 | .210 | 0.0 |
| Ben Oglivie | 1972-1986 | 1451 | 4614 | 620 | 1177 | 263 | 26 | 177 | 724 | 17 | 12 | 381 | 574 | .255 | .314 | .438 | .752 | 119.7 |
| Greg O'Halloran | 2000-2004 | 349 | 1000 | 88 | 208 | 33 | 6 | 12 | 89 | 0 | 0 | 77 | 190 | .208 | .267 | .289 | .556 | 0.3 |
| Kevin Ohme | 2004-2005 | 157 | 13 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | .077 | .077 | .077 | .154 | 0.0 |
| Bob Ojeda | 1981-1988 | 244 | 106 | 6 | 12 | 0 | 1 | 0 | 3 | 1 | 0 | 2 | 55 | .113 | .130 | .132 | .262 | 0.1 |
| Miguel Ojeda | 2004-2004 | 25 | 63 | 9 | 18 | 5 | 0 | 3 | 11 | 0 | 0 | 1 | 12 | .286 | .338 | .508 | .846 | 1.4 |
| Troy O'Leary | 1993-2001 | 182 | 590 | 77 | 144 | 30 | 6 | 12 | 57 | 0 | 0 | 36 | 130 | .244 | .287 | .376 | .663 | 7.4 |
| John Olerud | 1990-2003 | 1821 | 5776 | 836 | 1455 | 415 | 11 | 157 | 740 | 1 | 1 | 958 | 1415 | .252 | .357 | .409 | .766 | 144.6 |
| Jose Oliva | 1998-2001 | 78 | 246 | 24 | 57 | 11 | 1 | 9 | 31 | 0 | 0 | 18 | 75 | .232 | .287 | .394 | .682 | 1.7 |
| Al Oliver | 1977-1983 | 1039 | 3924 | 464 | 1173 | 244 | 30 | 87 | 568 | 9 | 14 | 226 | 230 | .299 | .339 | .443 | .782 | 111.1 |
| Darren Oliver | 2002-2005 | 36 | 41 | 4 | 5 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | 20 | .122 | .163 | .195 | .358 | 0.0 |
| Dave Oliver | 1977-1986 | 879 | 2700 | 229 | 643 | 76 | 13 | 8 | 228 | 1 | 4 | 218 | 152 | .238 | .294 | .285 | .579 | 16.7 |
| Joe Oliver | 1989-1999 | 1182 | 4068 | 510 | 1034 | 280 | 6 | 102 | 528 | 1 | 0 | 257 | 1054 | .254 | .301 | .401 | .702 | 56.4 |
| Miguel Olivo | 2004-2005 | 75 | 213 | 24 | 35 | 7 | 2 | 2 | 23 | 1 | 0 | 15 | 71 | .164 | .223 | .244 | .467 | 0.0 |
| Ray Olmedo | 2005-2005 | 25 | 35 | 5 | 6 | 0 | 0 | 1 | 4 | 0 | 0 | 3 | 13 | .171 | .237 | .257 | .494 | 0.0 |
| Al Olmsted | 1981-1986 | 34 | 58 | 1 | 6 | 1 | 0 | 0 | 2 | 0 | 1 | 2 | 37 | .103 | .133 | .121 | .254 | 0.0 |
| Gregg Olson | 1991-2002 | 622 | 39 | 1 | 2 | 0 | 0 | 0 | 4 | 0 | 0 | 4 | 20 | .051 | .133 | .051 | .185 | 0.0 |
| Ed Olwine | 1986-1995 | 196 | 12 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | .250 | .250 | .250 | .500 | 0.0 |
| Tom O'Malley | 1982-1995 | 1689 | 5674 | 724 | 1565 | 286 | 48 | 88 | 751 | 5 | 10 | 595 | 980 | .276 | .345 | .390 | .735 | 142.9 |
| Randy O'Neal | 1984-1995 | 79 | 125 | 7 | 6 | 3 | 0 | 0 | 4 | 0 | 0 | 6 | 49 | .048 | .091 | .072 | .163 | 0.3 |
| Player | From-To | G | AB | R | H | 2B | 3B | HR | RBI | SB | CS | BB | SO | AVG | OBP | SLG | OPS | OWS |
| Paul O'Neill | 1988-1998 | 1334 | 4043 | 498 | 1175 | 175 | 23 | 95 | 498 | 3 | 8 | 249 | 747 | .291 | .330 | .416 | .746 | 89.9 |
| Steve Ontiveros | 1977-1984 | 1065 | 3331 | 410 | 875 | 190 | 14 | 48 | 362 | 10 | 7 | 447 | 407 | .263 | .352 | .371 | .723 | 80.6 |
| Jose Oquendo | 1988-1999 | 1350 | 4334 | 502 | 1132 | 190 | 24 | 66 | 449 | 4 | 4 | 425 | 737 | .261 | .329 | .362 | .691 | 77.8 |
| Mike Oquist | 1997-2001 | 101 | 69 | 4 | 4 | 0 | 1 | 1 | 1 | 0 | 0 | 2 | 32 | .058 | .085 | .130 | .215 | 0.2 |
| Magglio Ordonez | 1997-2005 | 1400 | 5397 | 978 | 1593 | 404 | 37 | 379 | 1222 | 7 | 6 | 514 | 751 | .295 | .355 | .594 | .949 | 189.0 |
| Rey Ordonez | 2002-2002 | 12 | 31 | 2 | 7 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 8 | .226 | .273 | .258 | .531 | 0.0 |
| Kevin Orie | 1997-2005 | 1095 | 3614 | 534 | 967 | 343 | 32 | 82 | 555 | 1 | 5 | 408 | 766 | .268 | .354 | .448 | .802 | 74.8 |
| Joe Orsulak | 1986-1998 | 1742 | 6218 | 739 | 1846 | 317 | 80 | 26 | 628 | 15 | 57 | 314 | 429 | .297 | .329 | .386 | .715 | 116.1 |
| Jorge Orta | 1977-1982 | 948 | 3550 | 449 | 916 | 190 | 43 | 57 | 405 | 18 | 21 | 248 | 284 | .258 | .307 | .384 | .691 | 49.2 |
| David Ortiz | 1998-2005 | 1221 | 4312 | 795 | 1192 | 405 | 20 | 258 | 823 | 6 | 0 | 520 | 1142 | .276 | .355 | .559 | .914 | 126.2 |
| Javier Ortiz | 1990-1993 | 130 | 216 | 28 | 43 | 6 | 2 | 2 | 17 | 1 | 0 | 18 | 41 | .199 | .260 | .273 | .533 | 1.2 |
| Junior Ortiz | 1986-1992 | 645 | 2085 | 174 | 524 | 83 | 7 | 9 | 182 | 3 | 3 | 86 | 183 | .251 | .280 | .311 | .590 | 15.5 |
| Russ Ortiz | 1998-2002 | 138 | 244 | 22 | 60 | 4 | 0 | 1 | 23 | 0 | 0 | 15 | 103 | .246 | .286 | .275 | .561 | 0.6 |
| Chad Orvella | 2005-2005 | 53 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | 0.0 |
| Keith Osik | 1997-1997 | 50 | 123 | 16 | 32 | 7 | 1 | 2 | 14 | 0 | 0 | 4 | 22 | .260 | .289 | .382 | .671 | 1.4 |
| Antonio Osuna | 1996-2001 | 99 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | .000 | .000 | .000 | .000 | 0.0 |
| Ricky Otero | 2003-2005 | 235 | 724 | 95 | 196 | 28 | 6 | 9 | 76 | 3 | 9 | 88 | 153 | .271 | .351 | .363 | .714 | 11.3 |
| Amos Otis | 1969-1985 | 1197 | 3774 | 521 | 888 | 163 | 47 | 87 | 419 | 208 | 71 | 369 | 446 | .235 | .301 | .373 | .673 | 59.0 |
| Akinori Otsuka | 2004-2005 | 203 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | .000 | .167 | .000 | .167 | 0.0 |
| Ed Ott | 1975-1991 | 1829 | 5667 | 657 | 1554 | 244 | 40 | 69 | 697 | 25 | 12 | 352 | 614 | .274 | .319 | .368 | .687 | 110.7 |
| Lyle Overbay | 2003-2005 | 439 | 1419 | 272 | 453 | 147 | 6 | 43 | 239 | 6 | 0 | 192 | 266 | .319 | .398 | .522 | .920 | 52.4 |
| Bob Owchinko | 1977-1987 | 484 | 218 | 12 | 40 | 5 | 0 | 0 | 8 | 0 | 0 | 5 | 92 | .183 | .201 | .206 | .407 | 0.9 |
| Eric Owens | 1997-2003 | 414 | 1108 | 179 | 265 | 55 | 12 | 20 | 139 | 1 | 0 | 107 | 257 | .239 | .307 | .365 | .671 | 8.2 |
| Jayhawk Owens | 1993-1996 | 337 | 898 | 85 | 173 | 48 | 3 | 17 | 93 | 0 | 0 | 75 | 310 | .193 | .271 | .310 | .580 | 3.9 |
| Spike Owen | 1987-1998 | 1355 | 4045 | 542 | 926 | 259 | 39 | 49 | 447 | 80 | 23 | 583 | 433 | .229 | .329 | .349 | .678 | 72.4 |
| Rick Ownbey | 1983-1992 | 268 | 125 | 12 | 13 | 3 | 1 | 0 | 11 | 0 | 0 | 8 | 42 | .104 | .157 | .144 | .301 | 0.0 |
| Pablo Ozuna | 2005-2005 | 79 | 147 | 25 | 34 | 3 | 5 | 6 | 18 | 0 | 1 | 6 | 24 | .231 | .261 | .442 | .704 | 1.5 |
57 Players | ||||||||||||||||||
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