Zack Littell gave up the fewest walks in 2025, with 32 allowed.

Interpreted as:

least walks allowed with a minimum of 1 IP per team game by a player 2025

	NAME	BB	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	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	Zack Littell Z. Littell	32	2025	TOT	32	10	8	.556	32	3.81	130	1	0	0	186.2	174	79	81	36	7	0	1	759	3	6.27	1.54	4.06	1.74	17.1	4.2	1.10	.249	3.91	93	4.87	118	8.39	-15.4
2	Tarik Skubal T. Skubal	33	2025	DET	31	13	6	.684	31	2.21	241	1	1	0	195.1	141	48	55	18	5	0	0	748	3	11.10	1.52	7.30	0.83	32.2	4.4	0.89	.273	2.53	55	2.44	59	6.50	36.9
3	Bryan Woo B. Woo	36	2025	SEA	30	15	7	.682	30	2.94	198	0	0	0	186.2	137	61	64	26	4	0	0	731	3	9.55	1.74	5.50	1.25	27.1	4.9	0.93	.238	3.09	77	3.46	86	6.61	11.4
4	Jacob deGrom J. deGrom	37	2025	TEX	30	12	8	.600	30	2.97	185	0	0	0	172.2	122	57	57	26	3	0	0	669	3	9.64	1.93	5.00	1.36	27.7	5.5	0.92	.230	2.97	73	3.64	86	6.36	11.7
5	Brandon Pfaadt B. Pfaadt	37	2025	AZ	33	13	9	.591	33	5.25	147	0	0	0	176.2	198	103	107	26	12	0	2	767	3	7.49	1.88	3.97	1.32	19.2	4.8	1.33	.316	5.45	123	4.21	105	10.09	-4.3
6	Kyle Freeland K. Freeland	38	2025	COL	31	5	17	.227	31	4.98	124	0	0	0	162.2	193	90	105	22	6	0	2	709	2	6.86	2.10	3.26	1.22	17.5	5.4	1.42	.329	5.81	105	4.17	96	10.68	3.2
7	Sonny Gray S. Gray	38	2025	STL	32	14	8	.636	32	4.28	201	1	1	0	180.2	185	86	93	25	3	0	0	753	2	10.01	1.89	5.29	1.25	26.7	5.0	1.23	.329	4.63	104	3.38	84	9.22	13.5
8	Joe Ryan J. Ryan	39	2025	MIN	31	13	10	.565	30	3.42	194	0	0	0	171.0	138	65	69	26	12	0	0	689	0	10.21	2.05	4.97	1.37	28.2	5.7	1.04	.268	3.63	84	3.73	89	7.26	8.4
9	Matthew Boyd M. Boyd	42	2025	CHC	31	14	8	.636	31	3.21	154	0	0	0	179.2	154	64	69	19	9	0	0	718	2	7.71	2.10	3.67	0.95	21.4	5.8	1.09	.273	3.46	78	3.64	90	7.71	8.2
10	Nick Martinez N. Martinez	42	2025	CIN	40	11	14	.440	26	4.45	116	0	0	0	165.2	158	82	86	22	6	2	1	683	6	6.30	2.28	2.76	1.20	17.0	6.1	1.21	.274	4.67	100	4.32	99	8.58	1.4
11	Paul Skenes P. Skenes	42	2025	PIT	32	10	10	.500	32	1.97	216	1	0	0	187.2	136	41	45	11	6	0	0	733	2	10.36	2.01	5.14	0.53	29.5	5.7	0.95	.273	2.16	46	2.36	57	6.52	37
12	Kyle Hendricks K. Hendricks	43	2025	LAA	31	8	10	.444	31	4.76	114	0	0	0	164.2	167	87	92	25	5	0	3	695	0	6.23	2.35	2.65	1.37	16.4	6.2	1.28	.280	5.03	114	4.59	107	9.13	-5.1
13	Andrew Abbott A. Abbott	43	2025	CIN	29	10	7	.588	29	2.87	149	1	1	0	166.1	148	53	60	19	3	0	0	684	4	8.06	2.33	3.47	1.03	21.8	6.3	1.15	.274	3.25	64	3.65	83	8.01	13.1
14	Cristopher Sánchez C. Sánchez	44	2025	PHI	32	13	5	.722	32	2.50	212	1	0	0	202.0	171	56	58	12	6	0	0	807	6	9.45	1.96	4.82	0.53	26.3	5.5	1.06	.298	2.58	59	2.54	60	7.62	36.9
15	Michael Wacha M. Wacha	45	2025	KCR	31	10	13	.435	31	3.86	126	0	0	0	172.2	166	74	74	15	4	0	0	716	2	6.57	2.35	2.80	0.78	17.6	6.3	1.22	.287	3.86	90	3.65	87	8.65	10
16	Dean Kremer D. Kremer	45	2025	BAL	31	11	10	.524	29	4.19	142	0	0	0	171.2	163	80	83	22	2	0	0	708	9	7.44	2.36	3.16	1.15	20.1	6.4	1.21	.284	4.35	105	3.96	97	8.55	2.3
17	Luis Castillo L. Castillo	46	2025	SEA	32	11	8	.579	32	3.54	162	0	0	0	180.2	168	71	76	23	7	0	0	745	3	8.07	2.29	3.52	1.15	21.7	6.2	1.18	.286	3.79	92	3.87	97	8.37	2.5
18	Logan Webb L. Webb	46	2025	SFG	34	15	11	.577	34	3.22	224	0	0	0	207.0	210	74	82	14	6	0	0	856	2	9.74	2.00	4.87	0.61	26.2	5.4	1.24	.346	3.57	79	2.60	65	9.13	32.5
19	Garrett Crochet G. Crochet	46	2025	BOS	32	18	5	.783	32	2.59	255	1	1	0	205.1	165	59	62	24	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
20	Merrill Kelly M. Kelly	48	2025	TOT	32	12	9	.571	32	3.52	167	0	0	0	184.0	157	72	79	23	2	0	0	748	1	8.17	2.35	3.48	1.13	22.3	6.4	1.11	.264	3.86	84	3.75	92	7.68	6.8
21	Kevin Gausman K. Gausman	50	2025	TOR	32	10	11	.476	32	3.59	189	1	1	0	193.0	155	77	79	21	3	0	2	775	1	8.81	2.33	3.78	0.98	24.4	6.5	1.06	.262	3.68	89	3.41	82	7.23	16.4
22	Nick Pivetta N. Pivetta	50	2025	SDP	31	13	5	.722	31	2.87	190	0	0	0	181.2	129	58	63	22	3	0	1	721	1	9.41	2.48	3.80	1.09	26.4	6.9	0.99	.235	3.12	71	3.49	85	6.39	12.2
23	Luis Severino L. Severino	50	2025	ATH	29	8	11	.421	29	4.54	124	0	0	0	162.2	162	82	93	16	16	0	1	705	3	6.86	2.77	2.48	0.89	17.6	7.1	1.30	.293	5.15	111	4.10	98	8.96	1.3
24	Max Fried M. Fried	51	2025	NYY	32	19	5	.792	32	2.86	189	0	0	0	195.1	164	62	73	14	10	0	0	801	8	8.71	2.35	3.71	0.65	23.6	6.4	1.10	.279	3.36	70	3.06	71	7.56	26.2
25	Mitch Keller M. Keller	51	2025	PIT	32	6	15	.286	32	4.19	150	0	0	0	176.1	171	82	91	21	10	0	0	749	5	7.66	2.60	2.94	1.07	20.0	6.8	1.26	.290	4.64	97	4.01	97	8.73	2.3