The Seattle Mariners had a 3.97 FIP in 2025.

Interpreted as:

mariners fip last regular season

	NAME	TEAM	FIP	SEASON	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-	H/9	PRAA
1	José Castillo J. Castillo	Mariners	4.46	2025	3	0	0.00	1	0	0	0	3.0	3	0	1	0	2	0	1	1	13	0	3.00	6.00	0.50	0.00	7.7	15.4	1.67	.300	3.00	0	111	9.00	-0.2
2	Luis F. Castillo L. F. Castillo	Mariners	4.70	2025	2	2	7.71	5	0	0	0	7.0	12	6	7	0	7	0	0	0	41	0	6.43	9.00	0.71	0.00	12.2	17.1	2.71	.414	9.00	201	117	15.43	-0.6
3	Luis Castillo L. Castillo	Mariners	3.87	2025	32	32	3.54	162	0	0	0	180.2	168	71	76	23	46	7	0	0	745	3	8.07	2.29	3.52	1.15	21.7	6.2	1.18	.286	3.79	92	97	8.37	2.5
4	J.P. Crawford	Mariners		2025
5	Jhonathan Díaz J. Díaz	Mariners	1.63	2025	1	0	0.00	1	0	0	0	1.1	1	0	0	0	0	0	1	0	5	0	6.75	0.00		0.00	20.0	0.0	0.75	.250	0.00	0	41	6.75	0.4
6	Caleb Ferguson C. Ferguson	Mariners	3.40	2025	25	0	3.27	17	0	0	0	22.0	21	8	9	1	8	1	2	1	94	1	6.95	3.27	2.13	0.41	18.1	8.5	1.32	.299	3.68	85	85	8.59	1.5
7	Mitch Garver M. Garver	Mariners		2025
8	Jesse Hahn J. Hahn	Mariners	8.13	2025	3	0	5.40	3	0	0	0	5.0	6	3	4	1	5	1	2	3	25	0	5.40	9.00	0.60	1.80	12.0	20.0	2.20	.333	7.20	141	203	10.80	-2.4
9	Luke Jackson L. Jackson	Mariners	2.69	2025	10	0	2.38	10	0	0	0	11.1	6	3	6	0	4	1	5	1	45	0	7.94	3.18	2.50	0.00	22.2	8.9	0.88	.200	4.76	62	67	4.76	1.7
10	Casey Lawrence C. Lawrence	Mariners	4.26	2025	5	0	3.00	6	0	0	0	15.0	20	5	12	2	1	0	3	0	65	1	3.60	0.60	6.00	1.20	9.2	1.5	1.40	.321	7.20	78	106	12.00	-0.5
11	Jorge Polanco J. Polanco	Mariners		2025
12	Zach Pop Z. Pop	Mariners	11.00	2025	4	0	13.50	3	0	0	0	5.1	10	8	9	3	2	1	1	0	30	0	5.06	3.38	1.50	5.06	10.0	6.7	2.25	.333	15.19	351	275	16.88	-4.3
13	Victor Robles V. Robles	Mariners		2025
14	Donovan Solano D. Solano	Mariners		2025
15	Gabe Speier G. Speier	Mariners	2.31	2025	76	0	2.61	82	0	0	0	62.0	43	18	19	5	11	5	4	1	243	1	11.90	1.60	7.45	0.73	33.7	4.5	0.87	.271	2.76	68	58	6.24	12.1
16	Eugenio Suárez E. Suárez	Mariners		2025
17	Rowdy Tellez R. Tellez	Mariners		2025
18	Josh Naylor J. Naylor	Mariners		2025
19	Trent Thornton T. Thornton	Mariners	4.73	2025	33	0	4.68	32	0	0	0	42.1	41	22	23	6	14	4	7	2	180	1	6.80	2.98	2.29	1.28	17.8	7.8	1.30	.282	4.89	122	118	8.72	-3.6
20	Dylan Moore D. Moore	Mariners		2025
21	Tayler Saucedo T. Saucedo	Mariners	4.85	2025	10	0	7.43	12	0	0	0	13.1	19	11	12	2	6	1	5	0	66	0	8.10	4.05	2.00	1.35	18.2	9.1	1.88	.378	8.10	193	121	12.83	-1.3
22	Jackson Kowar J. Kowar	Mariners	5.83	2025	15	0	4.24	15	0	0	0	17.0	14	8	8	4	7	1	9	0	71	2	7.94	3.71	2.14	2.12	21.1	9.9	1.24	.227	4.24	110	146	7.41	-3.6
23	Luke Raley L. Raley	Mariners		2025
24	Samad Taylor S. Taylor	Mariners		2025
25	Miles Mastrobuoni M. Mastrobuoni	Mariners	9.13	2025	1	0	0.00	0	0	0	0	1.0	1	0	0	0	2	0	1	0	6	0	0.00	18.00	0.00	0.00	0.0	33.3	3.00	.250	0.00	0	228	9.00	-0.6
	Total		3.97		712	162	3.87	1,426	0	0	43	1462.2	1,331	629	694	192	454	74	162	26	6,134	53	8.77	2.79	3.14	1.18	23.2	7.4	1.22	.286	4.27	101	99	8.19	3.7