Garrett Crochet fanned the most hitters for the Red Sox in 2025, with 255 strikeouts.

	NAME	SO	SEASON	TM	G	W	L	W%	GS	ERA	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	Garrett Crochet G. Crochet	255	2025	BOS	32	18	5	.783	32	2.59	1	1	0	205.1	165	59	62	24	46	3	0	0	814	7	11.18	2.02	5.54	1.05	31.3	5.7	1.03	.290	2.72	60	2.88	68	7.23	30.2
2	Brayan Bello B. Bello	124	2025	BOS	29	11	9	.550	28	3.35	1	0	0	166.2	147	62	71	16	59	13	0	0	700	5	6.70	3.19	2.10	0.86	17.7	8.4	1.24	.268	3.83	77	4.18	99	7.94	0.6
3	Lucas Giolito L. Giolito	121	2025	BOS	26	10	4	.714	26	3.41	0	0	0	145.0	131	55	62	17	56	1	0	0	613	4	7.51	3.48	2.16	1.06	19.7	9.1	1.29	.273	3.85	79	4.16	99	8.13	0.9
4	Garrett Whitlock G. Whitlock	91	2025	BOS	62	7	3	.700	0	2.25	0	0	1	72.0	54	18	21	2	24	5	9	2	293	3	11.38	3.00	3.79	0.25	31.1	8.2	1.08	.304	2.63	52	2.17	52	6.75	16.2
5	Aroldis Chapman A. Chapman	85	2025	BOS	67	5	3	.625	0	1.17	0	0	32	61.1	28	8	9	3	15	0	43	0	228	6	12.47	2.20	5.67	0.44	37.3	6.6	0.70	.200	1.32	27	1.73	41	4.11	16.8
6	Walker Buehler W. Buehler	84	2025	BOS	23	7	7	.500	22	5.45	0	0	0	112.1	120	68	72	22	55	9	1	0	508	0	6.73	4.41	1.53	1.76	16.5	10.8	1.56	.290	5.77	126	5.89	140	9.61	-20.7
7	Justin Wilson J. Wilson	57	2025	BOS	61	4	1	.800	0	3.35	0	0	0	48.1	48	18	22	3	20	2	3	3	207	3	10.61	3.72	2.85	0.56	27.5	9.7	1.41	.360	4.10	77	2.94	70	8.94	6.8
8	Greg Weissert G. Weissert	57	2025	BOS	72	6	6	.500	0	2.82	0	0	4	67.0	57	21	27	6	21	3	11	1	278	1	7.66	2.82	2.71	0.81	20.5	7.6	1.16	.267	3.63	65	3.67	87	7.66	4.1
9	Hunter Dobbins H. Dobbins	45	2025	BOS	13	4	1	.800	11	4.13	0	0	0	61.0	61	28	30	6	17	2	0	1	256	0	6.64	2.51	2.65	0.89	17.6	6.6	1.28	.296	4.43	95	3.87	92	9.00	2.4
10	Brennan Bernardino B. Bernardino	43	2025	BOS	55	4	3	.571	3	3.14	0	0	1	51.2	39	18	23	1	26	3	12	5	224	3	7.49	4.53	1.65	0.17	19.2	11.6	1.26	.252	4.01	72	3.40	81	6.79	4.6
11	Sean Newcomb S. Newcomb	41	2025	BOS	12	0	4	.000	5	3.95	0	0	0	41.0	55	18	24	3	17	2	5	0	190	2	9.00	3.73	2.41	0.66	21.6	8.9	1.76	.409	5.27	91	3.47	82	12.07	3.4
12	Richard Fitts R. Fitts	40	2025	BOS	11	2	4	.333	10	5.00	0	0	0	45.0	43	25	27	11	16	3	0	0	195	1	8.00	3.20	2.50	2.20	20.5	8.2	1.31	.256	5.40	115	5.79	138	8.60	-7.8
13	Zack Kelly Z. Kelly	35	2025	BOS	28	1	3	.250	0	4.58	0	0	0	35.1	35	18	21	3	12	3	5	1	152	1	8.92	3.06	2.92	0.76	23.0	7.9	1.33	.323	5.35	106	3.52	84	8.92	2.7
14	Tanner Houck T. Houck	32	2025	BOS	9	0	3	.000	9	8.04	0	0	0	43.2	57	39	41	10	17	5	0	0	203	2	6.60	3.50	1.88	2.06	15.8	8.4	1.69	.338	8.45	186	6.15	146	11.75	-9.3
15	Chris Murphy C. Murphy	30	2025	BOS	23	3	0	1.000	0	3.12	0	0	0	34.2	21	12	12	4	20	5	12	1	148	1	7.79	5.19	1.50	1.04	20.3	13.5	1.18	.191	3.12	72	5.06	120	5.45	-3.2
16	Connelly Early C. Early	29	2025	BOS	4	1	2	.333	4	2.33	0	0	0	19.1	17	5	6	0	4	1	0	0	79	0	13.50	1.86	7.25	0.00	36.7	5.1	1.09	.378	2.79	54	0.90	21	7.91	7
17	Dustin May D. May	26	2025	BOS	6	1	4	.200	5	5.40	0	0	0	28.1	35	17	18	5	13	4	1	0	133	0	8.26	4.13	2.00	1.59	19.5	9.8	1.69	.353	5.72	125	5.39	128	11.12	-3.6
18	Justin Slaten J. Slaten	25	2025	BOS	36	2	4	.333	0	4.24	0	0	3	34.0	27	16	19	3	10	0	8	2	137	1	6.62	2.65	2.50	0.79	18.2	7.3	1.09	.242	5.03	98	3.69	88	7.15	2
19	Payton Tolle P. Tolle	19	2025	BOS	7	0	1	.000	3	6.06	0	0	0	16.1	18	11	12	5	8	0	2	0	74	1	10.47	4.41	2.38	2.76	25.7	10.8	1.59	.310	6.61	140	6.25	148	9.92	-3.7
20	Jorge Alcala J. Alcala	18	2025	BOS	19	0	0		0	3.31	0	0	0	16.1	19	6	11	4	8	0	7	0	76	3	9.92	4.41	2.25	2.20	23.7	10.5	1.65	.326	6.06	76	5.58	132	10.47	-2.4
21	Jordan Hicks J. Hicks	15	2025	BOS	21	1	2	.333	0	8.20	0	0	2	18.2	25	17	20	3	12	4	8	1	97	6	7.23	5.79	1.25	1.45	15.5	12.4	1.98	.349	9.64	189	6.18	147	12.05	-4
22	Kyle Harrison K. Harrison	13	2025	BOS	3	0	0		2	3.00	0	0	0	12.0	14	4	4	0	5	1	0	0	56	1	9.75	3.75	2.60	0.00	23.2	8.9	1.58	.378	3.00	69	2.46	58	10.50	2.3
23	Liam Hendriks L. Hendriks	12	2025	BOS	14	0	2	.000	0	6.59	0	0	0	13.2	12	10	11	2	7	1	6	0	59	0	7.90	4.61	1.71	1.32	20.3	11.9	1.39	.270	7.24	152	5.03	119	7.90	-1.2
24	Steven Matz S. Matz	12	2025	BOS	21	0	0		0	2.08	0	0	1	21.2	17	5	6	4	2	1	2	0	82	1	4.98	0.83	6.00	1.66	14.6	2.4	0.88	.206	2.49	48	4.84	115	7.06	-1.5
25	Luis Guerrero L. Guerrero	10	2025	BOS	13	0	1	.000	0	4.15	0	0	0	17.1	9	8	8	0	14	0	6	0	72	0	5.19	7.27	0.71	0.00	13.9	19.4	1.33	.188	4.15	96	4.40	104	4.67	-0.3