Players: O

178 indexed careers with a surname starting O.

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Player	Years	H	HR	K	Feats
BOBuck O'Brien	1911–1913	20	0	204
COCharlie O'Brien	1985–2000	493	56	0
JOJack O'Brien	1899–1903	317	9	0	2
JOJohnny O'Brien	1953–1959	204	4	30	1
POPete O'Brien	1982–1993	1,421	169	0	3
SOSyd O'Brien	1969–1972	242	24	0	1
TOTom O'Brien	1897–1900	436	10	0	2
TOTommy O'Brien	1943–1950	198	8	0	1
DODanny O'Connell	1950–1962	1,049	39	0	5
JOJimmy O'Connell	1923–1924	96	8	0	2
AOAndy O'Connor	1908–1908	0	0	5	2
BOBrian O'Connor	2000–2000	1	0	7	1
JOJack O'Connor	1897–1910	1,417	19	0
JOJack O'Connor	1981–1987	0	0	177
Darren O'Day	2008–2022	0	0	637
KOKen O'Dea	1935–1946	560	40	0
BOBilly O'Dell	1954–1967	66	2	1,133	4
JOJohn O'Donoghue	1963–1971	35	3	377	3
LOLefty O'Doul	1919–1934	1,140	113	19	12
BOBob O'Farrell	1915–1935	1,120	51	0
Eric O'Flaherty	2006–2017	0	0	318
BOBill O'Hara	1909–1910	88	1	0	2
Ryan O'Hearn	2018–2026	668	102	0	4
COCharley O'Leary	1904–1934	731	3	0	2
TOTroy O'Leary	1993–2003	1,100	127	0
TOTom O'Malley	1982–1990	310	13	0
OOOllie O'Mara	1912–1919	341	2	0	2
RORandy O'Neal	1984–1990	4	0	248
MOMickey O'Neil	1919–1927	475	4	0
BOBill O'Neill	1904–1906	181	2	0	1
EOEmmett O'Neill	1943–1946	22	1	144	2
JOJack O'Neill	1902–1906	185	1	0
JOJohn O'Neill	1899–1902	0	0	0
MOMike O'Neill	1901–1907	97	2	228	5
Paul O'Neill	1985–2001	2,105	281	2	7
SOSteve O'Neill	1911–1931	1,259	13	0	1
Tyler O'Neill	2018–2026	547	128	0
FOFrank O'Rourke	1912–1931	1,032	15	0	1
Sean O'Sullivan	2009–2016	4	0	158	2
JOJim O'Toole	1958–1967	67	0	1,039	1
MOMarty O'Toole	1908–1914	43	0	296	2
RORiley O`Brien	2021–2026	0	0	123
LOLogan O`Hoppe	2022–2026	309	57	0	1
BOBuck O`Neil	1937–1949	347	17	2	3
RORebel Oakes	1909–1915	1,011	15	0	5
JOJohnny Oates	1970–1981	410	14	0	1
Bailey Ober	2021–2026	1	0	700
Brett Oberholtzer	2013–2016	1	0	220
KOKen Oberkfell	1977–1992	1,354	29	0	2
FOFrank Oberlin	1906–1910	8	0	80	1
WOWes Obermueller	2002–2007	22	0	166
AOAlex Ochoa	1995–2002	597	46	0	4
Blue Moon Odom	1964–1976	79	12	857	2
Rougned Odor	2014–2023	930	178	0	5
Jake Odorizzi	2012–2022	2	0	1,172
FOFred Odwell	1904–1907	365	10	0
BOBryan Oelkers	1983–1986	0	0	46	1
JOJoe Oeschger	1914–1925	99	0	535	6
RORon Oester	1978–1990	1,118	42	0
Jose Offerman	1990–2005	1,551	57	0	8
RORowland Office	1972–1983	626	32	0	3
Alexi Ogando	2010–2018	3	0	408
COCurly Ogden	1922–1926	33	0	88
JOJack Ogden	1918–1932	34	0	144	2
COChad Ogea	1994–1999	4	0	369	2
Ben Oglivie	1971–1986	1,615	235	0	3
Tomo Ohka	1999–2009	33	0	590	1
Ross Ohlendorf	2007–2016	10	1	444	1
WOWill Ohman	2000–2012	2	0	336	2
Shohei Ohtani	2018–2026	1,194	310	765	19
KOKirt Ojala	1997–1999	4	0	99	1
AOAugie Ojeda	2000–2010	249	7	0
BOBob Ojeda	1980–1994	44	1	1,128	3
KOKazuma Okamoto	2026–2026	132	33	0
Steven Okert	2016–2026	0	0	405
RORed Oldham	1914–1926	64	2	267	2
RORube Oldring	1905–1918	1,268	27	0	4
WOWyatt Olds	2026–2026	0	0	20
John Olerud	1989–2005	2,239	255	0	6
SOSteve Olin	1989–1992	0	0	173	1
Jared Oliva	2020–2026	11	0	0
Tony Oliva	1962–1976	1,917	220	0	6
OOOmar Olivares	1990–2001	58	5	853	1
Al Oliver	1968–1985	2,743	219	0	8
BOBob Oliver	1965–1975	745	94	0	3
DODarren Oliver	1993–2013	48	1	1,259	5
GOGene Oliver	1959–1969	546	93	0	2
JOJoe Oliver	1989–2001	831	102	0
NONate Oliver	1963–1969	216	2	0
TOTom Oliver	1930–1933	534	0	0
Miguel Olivo	2002–2014	905	145	0	3
LOLuis Olmo	1943–1951	458	29	0
FOFred Olmstead	1908–1911	19	0	135	2
KOKevin Olsen	2001–2003	1	0	63	1
OOOle Olsen	1922–1923	8	0	64	1
SOScott Olsen	2005–2010	32	0	528	1
VOVern Olsen	1939–1946	39	1	201
Greg Olson	1989–1993	309	20	0
Gregg Olson	1988–2001	1	1	588	2
IOIvy Olson	1911–1924	1,575	13	0	4
KOKarl Olson	1951–1957	160	6	0	3
Matt Olson	2016–2026	1,312	329	0	1
JOJack Onslow	1912–1917	13	0	0
Steve Ontiveros	1985–2000	1	0	382	3
SOSteve Ontiveros	1973–1980	600	24	0	1
JOJose Oquendo	1983–1995	821	14	2
MOMike Oquist	1993–1999	1	0	351	1
Magglio Ordonez	1997–2011	2,156	294	0	3
Rey Ordonez	1996–2004	767	12	0
JOJoe Orengo	1939–1945	266	17	0
KOKevin Orie	1997–2002	253	22	0
Jonathan Ornelas	2023–2026	15	0	0
EOEddie Oropesa	2001–2004	0	0	78	1
Jesse Orosco	1979–2003	10	0	1,179
EOErnie Orsatti	1927–1939	663	10	0	2
JOJohn Orsino	1961–1967	252	40	0
JOJoe Orsulak	1983–1997	1,173	57	0	3
Jorge Orta	1972–1987	1,619	130	0	4
POPhil Ortega	1960–1969	29	0	549
Rafael Ortega	2012–2024	282	22	0	4
AOAl Orth	1897–1909	464	12	948	20
AOAbimelec Ortiz	2026–2026	24	5	0
David Ortiz	1997–2016	2,472	541	0	6
Joey Ortiz	2023–2026	320	27	0
JOJose Ortiz	2000–2002	109	14	0	1
JOJunior Ortiz	1982–1994	484	5	0
Luis Ortiz	2022–2025	0	0	279
RORamon Ortiz	1999–2013	11	1	895	1
Russ Ortiz	1998–2010	104	7	1,192	3
COChad Orvella	2005–2007	0	0	66	1
Eric Orze	2024–2026	0	0	77
BOBob Osborn	1925–1931	22	0	140	1
BOBobo Osborne	1957–1963	157	17	0	1
DODonovan Osborne	1992–2004	42	1	558
TOTiny Osborne	1922–1925	44	0	263
Josh Osich	2015–2021	0	0	199	1
KOKeith Osik	1996–2005	259	13	2
DODan Osinski	1962–1970	12	0	400	1
FOFranquelis Osoria	2005–2008	2	0	72	1
AOAlberto Osorio	1949–1949	0	0	3	2
COClaude Osteen	1957–1975	207	8	1,612	5
FOFritz Ostermueller	1934–1948	175	0	774	1
JOJoe Ostrowski	1948–1952	19	0	131	2
Alejandro Osuna	2025–2026	85	3	0
AOAntonio Osuna	1995–2005	1	0	501	1
Roberto Osuna	2015–2020	0	0	348	1
Corey Oswalt	2018–2021	0	0	71	1
Roy Oswalt	2001–2013	101	1	1,852	6
Michel Otanez	2024–2025	0	0	61	1
Dan Otero	2012–2019	0	0	262
BOBill Otey	1907–1911	7	0	33	1
Amos Otis	1967–1984	2,020	193	0	17
EOEd Ott	1974–1981	465	33	0	1
Mel Ott	1926–1947	2,876	511	0	20
Adam Ottavino	2010–2025	2	0	862	2
DODave Otto	1987–1994	4	0	144	3
JOJimmy Outlaw	1937–1949	529	6	0
James Outman	2022–2026	191	39	0
OOOrval Overall	1905–1913	94	2	935	5
Lyle Overbay	2001–2014	1,355	151	0	2
SOStubby Overmire	1943–1952	54	0	301
AOAlbert Overton	1937–1946	3	0	9	1
Johan Oviedo	2020–2026	3	0	324	3
Luis Oviedo	2021–2021	0	0	31	1
BOBob Owchinko	1976–1986	22	0	490
FOFrank Owen	1901–1909	77	2	443	1
LOLarry Owen	1981–1988	68	8	0	1
MOMarv Owen	1931–1940	1,040	31	0	6
MOMickey Owen	1937–1954	929	14	0
SOSpike Owen	1983–1995	1,211	46	0	5
EOEric Owens	1995–2003	621	26	0	2
JOJayhawk Owens	1993–1996	75	11	0
JOJim Owens	1955–1967	22	0	516	4
Chris Owings	2013–2023	550	37	0	1
Micah Owings	2007–2012	58	9	347	1
RORick Ownbey	1982–1986	4	0	83	1
RORay Oyler	1965–1970	221	15	0
Marcell Ozuna	2013–2026	1,678	304	0	5