Felix Hernandez was 169-136 with an ERA of 3.42 and 2,524 strikeouts in 419 appearances for the Mariners in his career.

	NAME	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Felix Hernandez F. Hernandez	2005	SEA	12	4	4	.500	12	2.67	77	0	0	84.1	61	25	26	5	23	2	0	328	3	8.22	2.45	3.35	0.53	23.5	7.0	1.00	.253	2.77	64	2.84	67	6.51	13.5
2	Felix Hernandez F. Hernandez	2006	SEA	31	12	14	.462	31	4.52	176	2	1	191.0	195	96	105	23	60	6	2	816	11	8.29	2.83	2.93	1.08	21.6	7.4	1.34	.312	4.95	103	3.90	88	9.19	11.2
3	Felix Hernandez F. Hernandez	2007	SEA	30	14	7	.667	30	3.92	165	1	1	190.1	209	83	88	20	53	3	4	808	7	7.80	2.51	3.11	0.95	20.4	6.6	1.38	.333	4.16	90	3.74	86	9.88	12.8
4	Felix Hernandez F. Hernandez	2008	SEA	31	9	11	.450	31	3.45	175	2	0	200.2	198	77	85	17	80	8	7	857	8	7.85	3.59	2.19	0.76	20.4	9.3	1.39	.314	3.81	83	3.80	90	8.88	9.7
5	Felix Hernandez F. Hernandez	2009	SEA	34	19	5	.792	34	2.49	217	2	1	238.2	200	66	81	15	71	8	0	977	17	8.18	2.68	3.06	0.57	22.2	7.3	1.14	.278	3.05	58	3.08	71	7.54	33.4
6	Felix Hernandez F. Hernandez	2010	SEA	34	13	12	.520	34	2.27	232	6	1	249.2	194	63	80	17	70	8	1	1,001	14	8.36	2.52	3.31	0.61	23.2	7.0	1.06	.263	2.88	58	3.04	75	6.99	28.4
7	Felix Hernandez F. Hernandez	2011	SEA	33	14	14	.500	33	3.47	222	5	0	233.2	218	90	99	19	67	7	0	964	12	8.55	2.58	3.31	0.73	23.0	7.0	1.22	.307	3.81	90	3.13	80	8.40	20.9
8	Felix Hernandez F. Hernandez	2012	SEA	33	13	9	.591	33	3.06	223	5	5	232.0	209	79	84	14	56	12	0	939	13	8.65	2.17	3.98	0.54	23.7	6.0	1.14	.308	3.26	80	2.83	71	8.11	31
9	Felix Hernandez F. Hernandez	2013	SEA	31	12	10	.545	31	3.04	216	0	0	204.1	185	69	74	15	46	3	1	823	13	9.51	2.03	4.70	0.66	26.2	5.6	1.13	.313	3.26	79	2.60	67	8.15	29.5
10	Felix Hernandez F. Hernandez	2014	SEA	34	15	6	.714	34	2.14	248	0	0	236.0	170	56	68	16	46	5	1	912	18	9.46	1.75	5.39	0.61	27.2	5.0	0.92	.258	2.59	58	2.56	69	6.48	30.7
11	Felix Hernandez F. Hernandez	2015	SEA	31	18	9	.667	31	3.53	191	2	2	201.2	180	79	80	23	58	9	0	826	10	8.52	2.59	3.29	1.03	23.1	7.0	1.18	.288	3.57	92	3.71	94	8.03	5.4
12	Felix Hernandez F. Hernandez	2016	SEA	25	11	8	.579	25	3.82	122	0	0	153.1	138	65	76	19	65	10	0	655	6	7.16	3.82	1.88	1.12	18.6	9.9	1.32	.271	4.46	96	4.63	111	8.10	-8.3
13	Felix Hernandez F. Hernandez	2017	SEA	16	6	5	.545	16	4.36	78	0	0	86.2	86	42	46	17	26	6	0	368	8	8.10	2.70	3.00	1.77	21.2	7.1	1.29	.286	4.78	104	5.01	117	8.93	-7
14	Felix Hernandez F. Hernandez	2018	SEA	29	8	14	.364	28	5.55	125	0	0	155.2	159	96	107	27	59	12	0	685	11	7.23	3.41	2.12	1.56	18.2	8.6	1.40	.286	6.19	136	5.17	124	9.19	-17.3
15	Felix Hernandez F. Hernandez	2019	SEA	15	1	8	.111	15	6.40	57	0	0	71.2	85	51	58	17	25	6	0	325	5	7.16	3.14	2.28	2.13	17.5	7.7	1.53	.309	7.28	145	5.99	134	10.67	-12.4
	Total			419	169	136	.554	418	3.42	2,524	25	11	2729.2	2,487	1,037	1,157	264	805	105	16	11,284	156	8.32	2.65	3.14	0.87	22.4	7.1	1.21	.293	3.81	84	3.52	85	8.20	181.5