Since 1978, Mike Mussina has won the most games for the Orioles, with 147 wins.

Interpreted as:

most regular-season wins by orioles pitcher since 1978

	NAME	W	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Mike Mussina M. Mussina	147	81	.645	288	288	3.53	1,535	45	15	0	2009.2	1,895	789	836	210	467	22	0	15	8,201	39	6.87	2.09	3.29	0.94	18.7	5.7	1.18	.282	3.74	77	3.62	79	8.49	214.8
2	Scott McGregor S. McGregor	135	102	.570	324	302	3.97	843	82	23	1	2012.0	2,109	887	967	227	483	19	12	24	8,439	24	3.77	2.16	1.75	1.02	10.0	5.7	1.29	.274	4.33	101	4.09	101	9.43	-15.1
3	Mike Flanagan M. Flanagan	123	100	.552	392	284	3.91	1,085	79	15	3	1988.0	1,999	864	939	188	631	28	40	31	8,365	68	4.91	2.86	1.72	0.85	13.0	7.5	1.32	.282	4.25	100	3.85	96	9.05	37.1
4	Dennis Martinez D. Martinez	93	84	.525	273	228	4.19	733	63	10	1	1580.2	1,642	736	805	176	511	31	17	19	6,729	44	4.17	2.91	1.43	1.00	10.9	7.6	1.36	.278	4.58	108	4.23	106	9.35	-46.5
5	Scott Erickson S. Erickson	79	68	.537	200	197	4.73	699	37	10	0	1287.2	1,438	677	726	128	446	54	1	19	5,598	36	4.89	3.12	1.57	0.89	12.5	8.0	1.46	.307	5.07	102	4.48	96	10.05	28
6	Mike Boddicker M. Boddicker	79	73	.520	190	180	3.73	836	53	13	0	1273.2	1,198	528	595	126	444	39	6	24	5,350	38	5.91	3.14	1.88	0.89	15.6	8.3	1.29	.275	4.20	92	3.87	93	8.47	39.3
7	Chris Tillman C. Tillman	74	60	.552	210	205	4.57	847	2	1	0	1145.0	1,142	582	614	164	436	33	1	7	4,908	56	6.66	3.43	1.94	1.29	17.3	8.9	1.38	.285	4.83	110	4.71	111	8.98	-59.2
8	Jim Palmer J. Palmer	74	48	.607	172	161	3.39	490	43	8	1	1124.1	1,048	423	474	106	359	10	5	4	4,668	16	3.92	2.87	1.36	0.85	10.5	7.7	1.25	.254	3.79	88	4.01	103	8.39	-12.6
9	Sidney Ponson S. Ponson	73	85	.462	223	212	4.86	836	28	4	1	1375.1	1,529	743	790	180	465	28	5	11	5,950	42	5.47	3.04	1.80	1.18	14.1	7.8	1.45	.304	5.17	108	4.62	100	10.01	-1
10	Storm Davis S. Davis	61	43	.587	202	123	3.63	539	27	4	5	944.1	898	381	413	61	318	10	36	27	3,945	26	5.14	3.03	1.69	0.58	13.7	8.1	1.29	.277	3.94	91	3.48	85	8.56	62.6
11	Rodrigo Lopez R. Lopez	60	58	.508	167	141	4.72	614	5	2	0	912.2	990	479	510	128	281	28	5	15	3,951	19	6.05	2.77	2.19	1.26	15.5	7.1	1.39	.297	5.03	107	4.53	100	9.76	1.9
12	Ben McDonald B. McDonald	58	53	.523	155	142	3.89	638	21	6	0	937.0	838	405	434	100	334	20	5	16	3,906	26	6.13	3.21	1.91	0.96	16.3	8.6	1.25	.262	4.17	92	4.08	96	8.05	19.1
13	Sammy Stewart S. Stewart	51	45	.531	307	25	3.47	514	4	1	42	866.0	774	334	366	66	433	15	160	40	3,696	34	5.34	4.50	1.19	0.69	13.9	11.7	1.39	.265	3.80	88	4.06	101	8.04	-6
14	Daniel Cabrera D. Cabrera	48	59	.449	147	146	5.05	651	6	2	1	841.1	825	472	501	88	478	51	1	16	3,783	60	6.96	5.11	1.36	0.94	17.2	12.6	1.55	.293	5.36	113	4.81	106	8.83	-22
15	Jeremy Guthrie J. Guthrie	47	65	.420	161	153	4.12	602	4	0	0	983.1	971	450	486	133	281	45	4	11	4,154	13	5.51	2.57	2.14	1.22	14.5	6.8	1.27	.271	4.45	94	4.63	105	8.89	-19.7
16	Wei-Yin Chen W. Chen	46	32	.590	117	117	3.72	547	0	0	0	706.2	713	292	314	97	172	15	0	4	2,954	10	6.97	2.19	3.18	1.24	18.5	5.8	1.25	.290	4.00	92	4.13	100	9.08	0
17	Mark Williamson M. Williamson	46	35	.568	365	15	3.86	397	2	0	21	689.2	701	296	321	62	226	9	142	51	2,927	19	5.18	2.95	1.76	0.81	13.6	7.7	1.34	.286	4.19	93	3.90	94	9.15	20.8
18	Tippy Martinez T. Martinez	44	38	.537	430	0	3.57	525	0	0	88	660.2	586	262	290	47	311	4	251	47	2,796	50	7.15	4.24	1.69	0.64	18.8	11.1	1.36	.282	3.95	92	3.47	87	7.98	38.6
19	Arthur Rhodes A. Rhodes	43	36	.544	238	61	4.86	579	5	3	9	622.1	575	336	350	79	316	9	35	21	2,696	19	8.37	4.57	1.83	1.14	21.5	11.7	1.43	.290	5.06	109	4.39	98	8.32	7.8
20	Erik Bedard E. Bedard	40	34	.541	114	111	3.83	639	1	1	0	658.0	627	280	308	58	254	22	0	2	2,820	20	8.74	3.47	2.52	0.79	22.7	9.0	1.34	.308	4.21	85	3.58	78	8.58	72.3
21	Steve Stone S. Stone	40	21	.656	84	81	3.60	275	12	1	0	499.1	460	200	233	60	201	8	1	4	2,099	10	4.96	3.62	1.37	1.08	13.1	9.6	1.32	.257	4.20	93	4.43	112	8.29	-26.6
22	Kevin Gausman K. Gausman	39	51	.433	150	127	4.22	697	1	0	0	763.2	801	358	371	110	230	18	4	4	3,254	42	8.21	2.71	3.03	1.30	21.4	7.1	1.35	.314	4.37	100	4.16	96	9.44	13.1
23	Miguel Gonzalez M. Gonzalez	39	33	.542	101	95	3.82	417	1	1	0	580.1	555	246	261	86	190	24	1	8	2,439	15	6.47	2.95	2.19	1.33	17.1	7.8	1.28	.272	4.05	94	4.69	115	8.61	-36.2
24	Dylan Bundy D. Bundy	38	45	.458	127	103	4.67	602	2	1	0	614.1	611	319	345	114	206	25	8	5	2,628	13	8.82	3.02	2.92	1.67	22.9	7.8	1.33	.296	5.05	106	4.74	104	8.95	-11.6
25	Bob Milacki B. Milacki	37	37	.500	121	109	4.19	350	8	5	1	703.0	700	327	344	73	255	5	3	11	2,990	11	4.48	3.26	1.37	0.93	11.7	8.5	1.36	.272	4.40	107	4.26	109	8.96	-26.3