Since 2021, Dylan Cease has allowed the most walks, with 361 allowed.

Interpreted as:

most walks allowed with a minimum of 0.5 IP per team game by a player since 2021

	NAME	BB	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	Dylan Cease D. Cease	361	162	56	47	.544	162	3.72	1,106	3	3	0	884.0	726	365	401	94	28	0	7	3,723	50	11.26	3.68	3.06	0.96	29.7	9.7	1.23	.296	4.08	90	3.36	80	7.39	82
2	Charlie Morton C. Morton	341	157	54	45	.545	151	4.20	920	0	0	0	828.1	741	387	411	104	79	1	6	3,555	18	10.00	3.71	2.70	1.13	25.9	9.6	1.31	.302	4.47	101	4.09	100	8.05	0.1
3	Framber Valdez F. Valdez	305	143	68	41	.624	143	3.20	875	9	3	0	902.1	753	321	351	70	45	0	1	3,712	46	8.73	3.04	2.87	0.70	23.6	8.2	1.17	.283	3.50	79	3.39	83	7.51	71.2
4	Blake Snell B. Snell	289	114	39	32	.549	114	3.06	792	1	1	0	602.0	435	205	218	51	9	0	2	2,499	41	11.84	4.32	2.74	0.76	31.7	11.6	1.20	.283	3.26	77	3.13	75	6.50	67.8
5	Yusei Kikuchi Y. Kikuchi	286	158	40	43	.482	146	4.22	848	0	0	1	779.1	750	365	399	126	23	4	3	3,328	28	9.79	3.30	2.97	1.46	25.5	8.6	1.33	.305	4.61	103	4.28	103	8.66	-8.8
6	Nick Pivetta N. Pivetta	274	160	48	46	.511	136	4.00	895	1	0	2	804.2	679	358	373	124	20	4	5	3,337	29	10.01	3.06	3.27	1.39	26.8	8.2	1.18	.274	4.17	93	4.03	97	7.59	11.5
7	Patrick Corbin P. Corbin	271	157	38	74	.339	156	5.47	665	2	0	0	834.1	981	507	539	143	20	1	5	3,681	17	7.17	2.92	2.45	1.54	18.1	7.4	1.50	.325	5.81	132	4.84	115	10.58	-56.8
8	Freddy Peralta F. Peralta	271	141	54	34	.614	139	3.30	895	1	0	0	738.1	536	271	283	93	39	0	1	3,025	23	10.91	3.30	3.30	1.13	29.6	9.0	1.09	.257	3.45	78	3.64	86	6.53	47.1
9	Chris Bassitt C. Bassitt	269	153	64	44	.593	152	3.66	846	3	2	0	880.1	816	358	385	102	65	0	5	3,702	20	8.65	2.75	3.14	1.04	22.9	7.3	1.23	.295	3.94	91	3.89	94	8.34	24
10	Luis Castillo L. Castillo	269	153	51	51	.500	153	3.52	915	0	0	0	891.0	785	348	380	108	32	0	6	3,684	7	9.24	2.72	3.40	1.09	24.8	7.3	1.18	.287	3.84	88	3.70	90	7.93	39.5
11	Tyler Anderson T. Anderson	266	145	40	45	.471	141	4.09	637	0	0	0	802.1	754	365	390	113	27	0	9	3,403	21	7.15	2.98	2.39	1.27	18.7	7.8	1.27	.272	4.37	98	4.50	106	8.46	-23.6
12	Mitch Keller M. Keller	265	149	40	59	.404	147	4.40	756	2	1	0	808.1	833	395	424	93	56	0	2	3,504	15	8.42	2.95	2.85	1.04	21.6	7.6	1.36	.317	4.72	103	3.98	96	9.27	15.9
13	Zac Gallen Z. Gallen	263	149	60	43	.583	149	3.72	882	2	2	0	855.1	726	354	375	100	30	0	2	3,517	26	9.28	2.77	3.35	1.05	25.1	7.5	1.16	.279	3.95	88	3.65	90	7.64	37
14	José Berríos J. Berríos	252	159	60	44	.577	158	4.01	828	2	0	0	912.0	859	406	433	133	55	0	6	3,800	12	8.17	2.49	3.29	1.31	21.8	6.6	1.22	.287	4.27	99	4.25	102	8.48	-9
15	Brady Singer B. Singer	251	147	46	51	.474	144	4.25	747	1	0	0	790.2	793	373	398	93	54	2	1	3,387	14	8.50	2.86	2.98	1.06	22.1	7.4	1.32	.312	4.53	97	3.96	95	9.03	19.1
16	Taijuan Walker T. Walker	250	143	42	37	.532	125	4.47	560	0	0	1	696.1	670	346	364	106	25	5	2	2,955	9	7.24	3.23	2.24	1.37	19.0	8.5	1.32	.280	4.70	109	4.72	112	8.66	-39.2
17	Carlos Rodón C. Rodón	246	134	64	39	.621	134	3.44	884	2	1	0	745.1	576	285	304	93	34	0	1	3,055	33	10.67	2.97	3.59	1.12	28.9	8.1	1.10	.269	3.67	84	3.52	83	6.96	56.8
18	Kyle Gibson K. Gibson	242	129	42	37	.532	128	4.64	617	0	0	0	723.2	722	373	391	94	27	0	3	3,074	20	7.67	3.01	2.55	1.17	20.1	7.9	1.33	.300	4.86	112	4.27	103	8.98	-9.6
19	Lucas Giolito L. Giolito	242	120	39	37	.513	120	4.21	703	1	0	0	669.2	616	313	338	109	16	0	4	2,825	24	9.45	3.25	2.90	1.46	24.9	8.6	1.28	.289	4.54	100	4.34	101	8.28	-2.9
20	Kevin Gausman K. Gausman	239	158	62	47	.569	158	3.34	1,020	3	2	0	925.2	821	344	375	95	13	0	3	3,794	16	9.92	2.32	4.27	0.92	26.9	6.3	1.15	.299	3.65	83	3.11	75	7.98	104.8
21	Merrill Kelly M. Kelly	238	135	49	37	.570	135	3.66	724	0	0	0	793.2	697	323	344	96	14	0	5	3,241	11	8.21	2.70	3.04	1.09	22.3	7.3	1.18	.277	3.90	87	3.86	95	7.90	16.9
22	David Peterson D. Peterson	238	121	31	28	.525	106	4.18	574	2	1	0	573.0	557	266	286	57	32	0	2	2,466	22	9.02	3.74	2.41	0.90	23.3	9.7	1.39	.319	4.49	104	3.86	94	8.75	15.5
23	Cal Quantrill C. Quantrill	233	146	39	38	.506	128	4.32	502	0	0	0	701.2	710	337	356	93	42	2	0	2,999	21	6.44	2.99	2.15	1.19	16.7	7.8	1.34	.290	4.57	102	4.62	112	9.11	-39.1
24	Erick Fedde E. Fedde	225	119	26	44	.371	109	4.88	459	1	1	0	578.2	594	314	330	83	12	2	7	2,512	12	7.14	3.50	2.04	1.29	18.3	9.0	1.42	.295	5.13	119	4.65	113	9.24	-33.6
25	Martín Pérez M. Pérez	225	140	35	32	.522	110	3.96	510	1	1	0	643.0	655	283	309	79	26	9	3	2,756	12	7.14	3.15	2.27	1.11	18.5	8.2	1.37	.301	4.33	94	4.34	103	9.17	-10.9