Gavin Williams has walked the best walks per nine innings by an active pitcher this season, with 5.27 BB/9.

Interpreted as:

active leaders in bb/9 with a minimum of 0.5 IP per team game 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	Gavin Williams G. Williams	5.27	2025	CLE	19	5	4	.556	19	3.70	95	0	0	0	97.1	82	40	45	14	57	2	0	0	421	5	8.78	1.67	1.29	22.6	13.5	1.43	.269	4.16	92	4.82	118	7.58	-8.2
2	Mike Vasil M. Vasil	4.79	2025	CWS	25	4	3	.571	3	2.47	44	0	0	2	62.0	44	17	19	5	33	8	10	3	263	2	6.39	1.33	0.73	16.7	12.5	1.24	.225	2.76	60	4.69	111	6.39	-3
3	Hayden Birdsong H. Birdsong	4.52	2025	SFG	20	4	3	.571	9	4.11	68	0	0	0	65.2	60	30	37	10	33	4	2	0	292	5	9.32	2.06	1.37	23.3	11.3	1.42	.282	5.07	103	4.68	120	8.22	-6.1
4	José Soriano J. Soriano	4.38	2025	LAA	20	6	7	.462	20	3.90	98	0	0	0	113.0	109	49	56	4	55	3	0	0	487	3	7.81	1.78	0.32	20.1	11.3	1.45	.321	4.46	95	3.35	79	8.68	11
5	Randy Vásquez R. Vásquez	4.37	2025	SDP	19	3	4	.429	19	3.80	50	0	0	0	94.2	86	40	41	12	46	6	0	1	412	3	4.75	1.09	1.14	12.1	11.2	1.39	.248	3.90	96	5.32	133	8.18	-13.9
6	Tylor Megill T. Megill	4.35	2025	NYM	14	5	5	.500	14	3.95	89	0	0	0	68.1	60	30	37	6	33	7	0	0	305	3	11.72	2.70	0.79	29.2	10.8	1.36	.318	4.87	100	3.37	84	7.90	4.9
7	Grant Holmes G. Holmes	4.29	2025	ATL	20	4	8	.333	19	3.77	119	0	0	0	105.0	87	44	45	15	50	5	1	0	443	4	10.20	2.38	1.29	26.9	11.3	1.30	.283	3.86	90	4.24	107	7.46	-3.3
8	Will Warren W. Warren	4.27	2025	NYY	21	6	5	.545	21	4.91	117	0	0	0	99.0	96	54	56	11	47	2	0	0	438	2	10.64	2.49	1.00	26.7	10.7	1.44	.326	5.09	122	3.65	86	8.73	6.4
9	Jack Leiter J. Leiter	4.26	2025	TEX	16	5	6	.455	16	4.37	69	0	0	0	80.1	71	39	39	10	38	2	0	0	346	7	7.73	1.82	1.12	19.9	11.0	1.36	.269	4.37	108	4.47	107	7.95	-2.4
10	Bryce Miller B. Miller	4.25	2025	SEA	10	2	5	.286	10	5.73	39	0	0	0	48.2	52	31	31	5	23	3	0	0	216	2	7.21	1.70	0.92	18.1	10.6	1.54	.322	5.73	151	4.42	112	9.62	-2.7
11	Erick Fedde E. Fedde	4.20	2025	STL	19	3	9	.250	19	4.83	58	1	1	0	98.2	99	53	56	12	46	2	0	1	430	2	5.29	1.26	1.09	13.5	10.7	1.47	.279	5.11	120	4.95	124	9.03	-11
12	Charlie Morton C. Morton	4.16	2025	BAL	21	5	8	.385	15	5.58	92	0	0	0	88.2	97	55	57	13	41	8	1	1	408	1	9.34	2.24	1.32	22.5	10.0	1.56	.331	5.79	141	4.57	113	9.85	-5.5
13	Osvaldo Bido O. Bido	4.13	2025	ATH	13	2	4	.333	9	5.68	36	0	0	0	52.1	65	33	37	12	24	4	2	0	244	0	6.19	1.50	2.06	14.8	9.8	1.70	.315	6.36	141	6.29	153	11.18	-12.7
14	Griffin Canning G. Canning	4.13	2025	NYM	16	7	3	.700	16	3.77	70	0	0	0	76.1	70	32	35	8	35	0	0	0	328	3	8.25	2.00	0.94	21.3	10.7	1.38	.288	4.13	95	3.98	99	8.25	0.2
15	Walker Buehler W. Buehler	4.04	2025	BOS	16	6	6	.500	16	6.12	63	0	0	0	78.0	87	53	56	17	35	8	0	0	355	0	7.27	1.80	1.96	17.7	9.9	1.56	.302	6.46	143	5.95	143	10.04	-15.4
16	Sean Burke S. Burke	3.99	2025	CWS	19	4	8	.333	16	4.36	80	0	0	0	97.0	93	47	55	16	43	5	0	0	424	2	7.42	1.86	1.48	18.9	10.1	1.40	.275	5.10	107	5.06	119	8.63	-8.5
17	Eduard Bazardo E. Bazardo	3.99	2025	SEA	43	3	0	1.000	0	2.90	45	0	0	0	49.2	34	16	16	6	22	1	15	1	201	1	8.15	2.05	1.09	22.4	10.9	1.13	.220	2.90	76	4.23	107	6.16	-1.7
18	Yusei Kikuchi Y. Kikuchi	3.97	2025	LAA	21	4	6	.400	21	3.13	123	0	0	0	118.0	111	41	48	14	52	1	0	3	504	4	9.38	2.37	1.07	24.4	10.3	1.38	.309	3.66	76	3.89	92	8.47	4.6
19	Jose Quintana J. Quintana	3.91	2025	MIL	13	6	3	.667	13	3.28	48	0	0	0	71.1	66	26	30	7	31	1	0	0	303	1	6.06	1.55	0.88	15.8	10.2	1.36	.273	3.79	79	4.36	106	8.33	-2
20	Shane Smith S. Smith	3.84	2025	CWS	18	3	7	.300	18	4.26	81	0	0	0	86.2	76	41	49	9	37	10	0	0	377	7	8.41	2.19	0.93	21.5	9.8	1.30	.279	5.09	104	4.19	99	7.89	0.5
21	Landen Roupp L. Roupp	3.83	2025	SFG	19	6	6	.500	19	3.27	89	0	0	0	96.1	99	35	45	8	41	2	0	1	425	6	8.31	2.17	0.75	20.9	9.6	1.45	.319	4.20	82	3.65	94	9.25	2.5
22	Kodai Senga K. Senga	3.82	2025	NYM	14	7	3	.700	14	1.39	74	0	0	0	77.2	55	12	15	4	33	1	0	0	311	4	8.58	2.24	0.46	23.8	10.6	1.13	.256	1.74	35	3.16	79	6.37	7.4
23	Dustin May D. May	3.82	2025	LAD	17	5	6	.455	17	4.96	88	0	0	0	94.1	87	52	56	15	40	7	0	3	408	1	8.40	2.20	1.43	21.6	9.8	1.35	.279	5.34	123	4.78	115	8.30	-6.5
24	Bowden Francis B. Francis	3.80	2025	TOR	14	2	8	.200	14	6.05	54	0	0	0	64.0	71	43	46	19	27	6	0	0	288	3	7.59	2.00	2.67	18.8	9.4	1.53	.286	6.47	151	6.80	165	9.98	-19.1
25	Jordan Hicks J. Hicks	3.78	2025	TOT	17	1	5	.167	9	6.36	46	0	0	1	52.1	59	37	40	3	22	4	3	0	235	5	7.91	2.09	0.52	19.6	9.4	1.55	.350	6.88	158	3.56	91	10.15	2