Yusei Kikuchi has walked the best walks per nine innings this season, with 4.53 BB/9.

Interpreted as:

most walks per 9 innings with a minimum of 1 IP per team game by a pitcher this regular season

	NAME	BB/9	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Yusei Kikuchi Y. Kikuchi	4.53	2025	LAA	11	1	4	.200	11	3.17	54	0	0	0	59.2	59	21	24	7	30	1	0	1	261	3	8.15	1.80	1.06	20.7	11.5	1.49	.308	3.62	79	4.33	104	8.90	-1
2	Randy Vásquez R. Vásquez	4.39	2025	SDP	11	3	4	.429	11	3.58	32	0	0	0	55.1	50	22	23	6	27	3	0	0	239	2	5.20	1.19	0.98	13.4	11.3	1.39	.257	3.74	92	4.94	126	8.13	-6.4
3	Jack Kochanowicz J. Kochanowicz	4.33	2025	LAA	11	3	6	.333	11	5.07	40	0	0	0	60.1	63	34	35	9	29	4	0	2	264	2	5.97	1.38	1.34	15.2	11.0	1.52	.297	5.22	127	5.31	128	9.40	-7.4
4	José Soriano J. Soriano	4.31	2025	LAA	11	3	5	.375	11	3.73	47	0	0	0	62.2	66	26	29	3	30	1	0	0	272	3	6.75	1.57	0.43	17.3	11.0	1.53	.330	4.16	93	3.67	88	9.48	3.5
5	Zac Gallen Z. Gallen	4.23	2025	AZ	11	3	6	.333	11	5.25	63	0	0	0	61.2	55	36	36	10	29	2	0	1	267	1	9.19	2.17	1.46	23.6	10.9	1.36	.276	5.25	128	4.63	121	8.03	-5.7
6	Kodai Senga K. Senga	4.20	2025	NYM	10	5	3	.625	10	1.46	52	0	0	0	55.2	43	9	12	2	26	1	0	0	228	4	8.41	2.00	0.32	22.8	11.4	1.24	.279	1.94	37	3.11	80	6.95	5
7	Grant Holmes G. Holmes	3.99	2025	ATL	11	3	3	.500	10	3.68	55	0	0	0	58.2	42	24	24	10	26	2	1	0	241	2	8.44	2.12	1.53	22.8	10.8	1.16	.216	3.68	90	4.83	125	6.44	-6.4
8	Mitchell Parker M. Parker	3.90	2025	WSH	11	4	4	.500	11	4.65	40	0	0	0	60.0	54	31	33	5	26	3	0	0	259	2	6.00	1.54	0.75	15.4	10.0	1.33	.265	4.95	115	4.26	107	8.10	-1.7
9	Robbie Ray R. Ray	3.84	2025	SFG	11	7	0	1.000	11	2.56	69	0	0	0	63.1	46	18	18	5	27	0	0	0	256	2	9.81	2.56	0.71	27.0	10.5	1.15	.265	2.56	65	3.19	84	6.54	4.4
10	Corbin Burnes C. Burnes	3.77	2025	AZ	10	3	2	.600	10	2.72	57	0	0	0	59.2	45	18	22	7	25	3	0	1	246	1	8.60	2.28	1.06	23.2	10.2	1.17	.247	3.32	66	4.08	106	6.79	-1.8
11	Erick Fedde E. Fedde	3.75	2025	STL	11	3	4	.429	11	3.90	39	1	1	0	62.1	55	27	29	6	26	2	0	0	260	1	5.63	1.50	0.87	15.0	10.0	1.30	.262	4.19	98	4.41	114	7.94	-3.8
12	José Berríos J. Berríos	3.66	2025	TOR	11	1	2	.333	11	4.22	56	0	0	0	64.0	61	30	30	10	26	3	0	1	272	1	7.88	2.15	1.41	20.6	9.6	1.36	.288	4.22	108	4.70	116	8.58	-4.7
13	Shane Baz S. Baz	3.62	2025	TBR	10	4	3	.571	10	4.94	52	0	0	0	54.2	54	30	30	10	22	3	0	0	233	0	8.56	2.36	1.65	22.3	9.4	1.39	.301	4.94	131	4.91	125	8.89	-6.2
14	Andrew Heaney A. Heaney	3.56	2025	PIT	11	3	4	.429	11	3.41	44	0	0	0	60.2	50	23	23	7	24	3	0	0	254	1	6.53	1.83	1.04	17.3	9.4	1.22	.244	3.41	82	4.44	112	7.42	-3.3
15	Tyler Anderson T. Anderson	3.54	2025	LAA	11	2	2	.500	11	3.39	46	0	0	0	61.0	50	23	27	11	24	2	0	3	260	3	6.79	1.92	1.62	17.7	9.2	1.21	.220	3.98	85	5.17	124	7.38	-6.6
16	Taj Bradley T. Bradley	3.53	2025	TBR	11	4	4	.500	11	4.38	54	0	0	0	63.2	55	31	32	9	25	4	0	0	264	0	7.63	2.16	1.27	20.5	9.5	1.26	.267	4.52	116	4.57	116	7.77	-4.8
17	Brady Singer B. Singer	3.53	2025	CIN	11	6	3	.667	11	4.60	49	0	0	0	58.2	55	30	33	7	23	1	0	0	250	0	7.52	2.13	1.07	19.6	9.2	1.33	.282	5.06	107	4.17	99	8.44	0.3
18	Jeffrey Springs J. Springs	3.51	2025	ATH	11	5	3	.625	11	3.97	47	0	0	0	59.0	49	26	33	9	23	0	0	0	250	0	7.17	2.04	1.37	18.8	9.2	1.22	.234	5.03	101	4.62	114	7.47	-3.8
19	Freddy Peralta F. Peralta	3.45	2025	MIL	11	5	3	.625	11	2.55	60	0	0	0	60.0	44	17	18	7	23	3	0	0	248	2	9.00	2.61	1.05	24.2	9.3	1.12	.239	2.70	63	3.88	97	6.60	0.8
20	Clay Holmes C. Holmes	3.43	2025	NYM	11	5	3	.625	11	2.98	56	0	0	0	60.1	52	20	22	5	23	3	0	0	252	5	8.35	2.43	0.75	22.2	9.1	1.24	.285	3.28	76	3.57	91	7.76	2.3
21	David Peterson D. Peterson	3.41	2025	NYM	10	3	2	.600	10	2.79	54	0	0	0	58.0	52	18	21	4	22	3	0	1	247	2	8.38	2.45	0.62	21.9	8.9	1.28	.293	3.26	71	3.39	87	8.07	3.4
22	Andre Pallante A. Pallante	3.36	2025	STL	11	4	3	.571	11	4.23	42	0	0	0	61.2	61	29	30	9	23	0	0	0	264	4	6.13	1.83	1.31	15.9	8.7	1.36	.274	4.38	106	4.71	122	8.90	-5.9
23	Cristopher Sánchez C. Sánchez	3.33	2025	PHI	10	4	1	.800	10	3.17	65	0	0	0	54.0	48	19	21	6	20	4	0	0	230	4	10.83	3.25	1.00	28.3	8.7	1.26	.311	3.50	78	3.43	85	8.00	3.6
24	Dustin May D. May	3.23	2025	LAD	10	3	4	.429	10	4.20	58	0	0	0	55.2	49	26	29	7	20	4	0	0	234	1	9.38	2.90	1.13	24.8	8.5	1.24	.290	4.69	105	3.90	97	7.92	0.8
25	Carlos Rodón C. Rodón	3.22	2025	NYY	12	7	3	.700	12	2.60	90	0	0	0	72.2	42	21	23	8	26	0	0	0	284	2	11.15	3.46	0.99	31.7	9.2	0.94	.213	2.85	66	3.09	74	5.20	8.6