Chase Petty has the most walks allowed per inning pitched with 5.0+ innings pitched this season, with 1.5.

Interpreted as:

most walks per ip by a player with at least 5 ip this regular season

	NAME	BB/IP	IP	BB	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	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	Chase Petty C. Petty	1.5	5.1	8	2025	CIN	2	0	2	.000	2	21.94	7	0	0	0	13	13	13	3	0	0	0	36	0	11.81	13.50	0.88	5.06	19.4	22.2	3.94	.556	21.94	503	12.26	288	21.94	-4.5
2	Mike Clevinger M. Clevinger	1.41	5.2	8	2025	CWS	8	0	2	.000	0	7.94	3	0	0	0	5	5	5	0	0	3	0	31	1	4.76	12.71	0.38	0.00	9.7	25.8	2.29	.250	7.94	198	6.25	149	7.94	-1.2
3	Colin Poche C. Poche	1.38	8.2	12	2025	WSH	13	1	2	.333	0	11.42	10	0	0	0	10	11	12	1	0	0	0	46	1	10.38	12.46	0.83	1.04	21.7	26.1	2.54	.391	12.46	280	6.42	158	10.38	-2.3
4	Triston McKenzie T. McKenzie	1.24	5.2	7	2025	CLE	4	0	0		0	11.12	4	0	0	0	7	7	7	1	0	3	0	30	3	6.35	11.12	0.57	1.59	13.3	23.3	2.47	.333	11.12	283	7.66	190	11.12	-2.3
5	Noah Murdock N. Murdock	1.18	17.0	20	2025	ATH	14	1	1	.500	0	13.24	21	0	0	0	26	25	25	0	2	2	3	98	0	11.12	10.59	1.05	0.00	21.4	20.4	2.71	.473	13.24	334	4.48	110	13.76	-0.8
6	Bryan Hudson B. Hudson	1.16	10.1	12	2025	MIL	12	0	1	.000	0	4.35	13	0	0	0	8	5	7	0	2	2	2	54	0	11.32	10.45	1.08	0.00	24.1	22.2	1.94	.296	6.10	106	4.62	114	6.97	-0.6
7	Gregory Santos G. Santos	1.14	7.0	8	2025	SEA	8	1	1	.500	0	5.14	0	0	0	0	8	4	6	0	0	2	2	36	2	0.00	10.29	0.00	0.00	0.0	22.2	2.29	.286	7.71	138	6.50	166	10.29	-2.1
8	Lucas Sims L. Sims	1.14	12.1	14	2025	WSH	18	1	0	1.000	0	13.86	13	0	0	0	14	19	19	2	7	2	0	72	3	9.49	10.22	0.93	1.46	18.1	19.4	2.27	.333	13.86	340	8.18	202	10.22	-5.6
9	Dillon Tate D. Tate	1.13	5.1	6	2025	TOR	5	0	0		0	5.06	7	0	0	0	7	3	3	1	1	1	0	30	0	11.81	10.13	1.17	1.69	23.3	20.0	2.44	.400	5.06	129	6.82	167	11.81	-1.6
10	Craig Yoho C. Yoho	1.06	5.2	6	2025	MIL	5	0	0		0	9.53	4	0	0	0	7	6	6	1	1	1	0	28	0	6.35	9.53	0.67	1.59	14.3	21.4	2.29	.375	9.53	232	7.66	189	11.12	-2.2
11	Kyle Nicolas K. Nicolas	1.04	7.2	8	2025	PIT	7	0	0		0	10.57	6	0	0	0	10	9	9	2	0	0	0	42	0	7.04	9.39	0.75	2.35	14.3	19.0	2.35	.308	10.57	252	8.03	200	11.74	-3.4
12	Chayce McDermott C. McDermott	1.04	7.2	8	2025	BAL	2	0	1	.000	1	8.22	7	0	0	0	8	7	7	3	1	0	0	39	0	8.22	9.39	0.88	3.52	17.9	20.5	2.09	.250	8.22	211	9.85	247	9.39	-5.1
13	Luis F. Castillo L. F. Castillo	1	7.0	7	2025	SEA	2	0	0		2	7.71	5	0	0	0	12	6	7	0	0	0	0	41	0	6.43	9.00	0.71	0.00	12.2	17.1	2.71	.414	9.00	207	4.64	119	15.43	-0.6
14	Andrew Chafin A. Chafin	1	7.0	7	2025	WSH	10	0	0		0	1.29	10	0	0	0	7	1	2	0	0	3	0	33	4	12.86	9.00	1.43	0.00	30.3	21.2	2.00	.438	2.57	32	3.21	79	9.00	0.6
15	Jesse Hahn J. Hahn	1	5.0	5	2025	SEA	3	0	1	.000	0	5.40	3	0	0	0	6	3	4	1	1	2	3	25	0	5.40	9.00	0.60	1.80	12.0	20.0	2.20	.333	7.20	145	8.07	206	10.80	-2.4
16	Luis Peralta L. Peralta	0.96	8.1	8	2025	COL	9	1	1	.500	0	7.56	5	0	0	0	10	7	9	1	1	1	0	44	1	5.40	8.64	0.63	1.08	11.4	18.2	2.16	.310	9.72	163	6.67	158	10.80	-2.2
17	José Suarez J. Suarez	0.95	7.1	7	2025	ATL	3	1	0	1.000	0	2.45	5	0	0	0	3	2	3	1	0	1	1	30	0	6.14	8.59	0.71	1.23	16.7	23.3	1.36	.118	3.68	59	6.34	161	3.68	-2
18	Brandon Young B. Young	0.92	8.2	8	2025	BAL	2	0	1	.000	2	6.23	9	0	0	0	11	6	6	1	0	0	0	42	0	9.35	8.31	1.13	1.04	21.4	19.0	2.19	.417	6.23	160	5.26	132	11.42	-1.3
19	Fraser Ellard F. Ellard	0.9	6.2	6	2025	CWS	7	0	2	.000	0	6.75	10	0	0	0	1	5	5	0	1	3	0	25	0	13.50	8.10	1.67	0.00	40.0	24.0	1.05	.125	6.75	168	3.22	77	1.35	0.7
20	Blake Snell B. Snell	0.89	9.0	8	2025	LAD	2	1	0	1.000	2	2.00	4	0	0	0	10	2	7	0	0	0	0	46	2	4.00	8.00	0.50	0.00	8.7	17.4	2.00	.294	7.00	50	4.85	119	10.00	-0.7
21	Nestor Cortes N. Cortes	0.88	8.0	7	2025	MIL	2	1	1	.500	2	9.00	8	0	0	0	7	8	8	5	0	0	0	38	0	9.00	7.88	1.14	5.63	21.1	18.4	1.75	.111	9.00	219	11.82	292	7.88	-6.8
22	Joey Estes J. Estes	0.86	7.0	6	2025	ATH	2	0	2	.000	2	15.43	5	0	0	0	15	12	12	4	1	0	0	42	0	6.43	7.71	0.83	5.14	11.9	14.3	3.00	.423	15.43	389	12.07	296	19.29	-6.2
23	Alexis Díaz A. Díaz	0.83	6.0	5	2025	CIN	6	0	0		0	12.00	3	0	0	0	8	8	8	4	2	2	0	33	0	4.50	7.50	0.60	6.00	9.1	15.2	2.17	.211	12.00	275	14.24	335	12.00	-6.3
24	Jason Alexander J. Alexander	0.83	6.0	5	2025	ATH	4	0	0		0	18.00	5	0	0	0	12	12	13	3	0	3	0	35	0	7.50	7.50	1.00	4.50	14.3	14.3	2.83	.409	19.50	454	10.40	255	18.00	-4.2
25	Cionel Pérez C. Pérez	0.83	21.2	18	2025	BAL	19	0	0		0	8.31	21	0	0	0	28	20	22	3	2	6	1	110	1	8.72	7.48	1.17	1.25	19.1	16.4	2.12	.379	9.14	214	5.70	143	11.63	-4.2