Shawn Estes won the most games for the Rockies in 2004, with 15 wins.

	NAME	W	SEASON	TM	L	W%	G	GS	ERA	SO	CG	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	Shawn Estes S. Estes	15	2004	COL	8	.652	34	34	5.84	117	1	0	202.0	223	131	133	30	105	11	0	5	904	4	5.21	4.68	1.11	1.34	12.9	11.6	1.62	.301	5.93	121	5.54	119	9.94	-17.9
2	Jason Jennings J. Jennings	11	2004	COL	12	.478	33	33	5.51	133	0	0	201.0	241	123	125	27	101	7	0	14	925	6	5.96	4.52	1.32	1.21	14.4	10.9	1.70	.326	5.60	114	5.07	109	10.79	-8.2
3	Joe Kennedy J. Kennedy	9	2004	COL	7	.563	27	27	3.66	117	1	0	162.1	163	66	68	17	67	8	0	12	705	5	6.49	3.71	1.75	0.94	16.6	9.5	1.42	.294	3.77	76	4.35	93	9.04	5.8
4	Aaron Cook A. Cook	6	2004	COL	4	.600	16	16	4.28	40	1	0	96.2	112	46	47	7	39	7	0	5	433	6	3.72	3.63	1.03	0.65	9.2	9.0	1.56	.309	4.38	89	4.58	98	10.43	1.1
5	Tim Harikkala T. Harikkala	6	2004	COL	6	.500	55	0	4.74	30	0	0	62.2	55	33	34	10	23	1	11	5	262	0	4.31	3.30	1.30	1.44	11.5	8.8	1.24	.227	4.88	98	5.31	114	7.90	-4.1
6	Jeff Fassero J. Fassero	3	2004	COL	8	.273	40	12	5.51	59	0	0	111.0	136	68	73	9	44	4	2	5	505	4	4.78	3.57	1.34	0.73	11.7	8.7	1.62	.326	5.92	114	4.33	93	11.03	4.2
7	Jeff Francis J. Francis	3	2004	COL	2	.600	7	7	5.15	32	0	0	36.2	42	21	22	8	13	1	0	1	164	2	7.85	3.19	2.46	1.96	19.5	7.9	1.50	.309	5.40	107	5.28	113	10.31	-2.3
8	Vladimir Nunez V. Nunez	3	2004	COL	3	.500	22	0	7.01	22	0	0	25.2	26	20	22	6	14	1	6	0	114	4	7.71	4.91	1.57	2.10	19.3	12.3	1.56	.282	7.71	146	6.12	131	9.12	-3.8
9	Steve Reed S. Reed	3	2004	COL	8	.273	65	0	3.68	38	0	0	66.0	72	27	29	7	17	7	18	7	285	1	5.18	2.32	2.24	0.95	13.3	6.0	1.35	.301	3.95	76	4.36	93	9.82	2.3
10	Brian Fuentes B. Fuentes	2	2004	COL	4	.333	47	0	5.64	48	0	0	44.2	46	28	30	5	19	4	12	6	201	3	9.67	3.83	2.53	1.01	23.9	9.5	1.46	.328	6.04	117	3.89	83	9.27	3.7
11	Allan Simpson A. Simpson	2	2004	COL	1	.667	32	0	5.08	46	0	0	39.0	44	22	26	4	20	4	9	0	183	3	10.62	4.62	2.30	0.92	25.1	10.9	1.64	.367	6.00	105	3.86	83	10.15	3.4
12	Jamey Wright J. Wright	2	2004	COL	3	.400	14	14	4.12	41	0	0	78.2	82	36	39	8	45	6	0	3	361	3	4.69	5.15	0.91	0.92	11.4	12.5	1.61	.284	4.46	85	5.26	113	9.38	-4.8
13	Adam Bernero A. Bernero	1	2004	COL	1	.500	16	2	5.57	21	0	0	32.1	36	20	20	7	17	0	4	2	147	0	5.85	4.73	1.24	1.95	14.3	11.6	1.64	.284	5.57	116	6.13	131	10.02	-4.9
14	Shawn Chacon S. Chacon	1	2004	COL	9	.100	66	0	7.11	52	0	35	63.1	71	50	52	12	52	5	60	7	316	9	7.39	7.39	1.00	1.71	16.5	16.5	1.94	.303	7.39	147	6.56	141	10.09	-12.4
15	Javier Lopez J. Lopez	1	2004	COL	2	.333	64	0	7.52	20	0	0	40.2	45	34	34	1	26	3	10	4	187	3	4.43	5.75	0.77	0.22	10.7	13.9	1.75	.321	7.52	156	4.52	97	9.96	0.7