Since 2013, Kyle Gibson and Charlie Morton are tied for giving up the most walks, with 664 allowed.

Interpreted as:

MLB most walks allowed with a minimum of 0.5 IP per team game by a player since 2013

	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	Kyle Gibson K. Gibson	664	334	111	111	.500	328	4.60	1,520	3	1	0	1878.0	1,937	959	1,021	233	68	0	15	8,069	72	7.28	3.18	2.29	1.12	18.8	8.2	1.38	.305	4.89	109	4.32	103	9.28	-23.8
2	Charlie Morton C. Morton	664	327	124	89	.582	321	3.88	1,892	0	0	0	1794.1	1,601	774	843	184	171	1	16	7,620	48	9.49	3.33	2.85	0.92	24.8	8.7	1.26	.301	4.23	96	3.77	94	8.03	58.1
3	Lance Lynn L. Lynn	629	311	124	91	.577	309	3.75	1,795	4	2	0	1795.2	1,663	748	828	212	78	0	17	7,640	57	9.00	3.15	2.85	1.06	23.5	8.2	1.28	.295	4.15	91	3.87	93	8.34	57.1
4	Sonny Gray S. Gray	621	339	125	102	.551	330	3.58	1,925	7	5	0	1918.0	1,675	763	836	192	57	2	5	7,952	106	9.03	2.91	3.10	0.90	24.2	7.8	1.20	.288	3.92	87	3.51	85	7.86	136.2
5	Robbie Ray R. Ray	608	265	88	81	.521	261	3.94	1,734	2	1	0	1441.0	1,250	631	674	216	51	1	19	6,097	60	10.83	3.80	2.85	1.35	28.4	10.0	1.29	.296	4.21	94	4.06	99	7.81	5.1
6	Patrick Corbin P. Corbin	605	351	104	134	.437	337	4.50	1,774	7	2	1	1940.2	2,062	971	1,046	270	47	7	22	8,355	66	8.23	2.81	2.93	1.25	21.2	7.2	1.37	.317	4.85	107	4.14	99	9.56	10.3
7	Jose Quintana J. Quintana	599	358	107	104	.507	335	3.76	1,735	2	2	0	1965.0	1,901	820	887	205	55	5	19	8,244	65	7.95	2.74	2.90	0.94	21.0	7.3	1.27	.300	4.06	91	3.73	90	8.71	90.3
8	Martín Pérez M. Pérez	575	313	90	89	.503	273	4.39	1,128	4	3	0	1593.2	1,703	777	857	188	50	12	10	6,893	38	6.37	3.25	1.96	1.06	16.4	8.3	1.43	.306	4.84	100	4.44	103	9.62	-24.8
9	Wade Miley W. Miley	556	280	89	86	.509	276	4.17	1,199	3	2	0	1522.2	1,542	706	756	178	44	3	10	6,532	51	7.09	3.29	2.16	1.05	18.4	8.5	1.38	.299	4.47	100	4.27	103	9.11	-18.2
10	Kevin Gausman K. Gausman	535	361	112	113	.498	322	3.81	1,954	4	2	0	1911.0	1,835	810	866	233	38	11	11	7,986	64	9.20	2.52	3.65	1.10	24.5	6.7	1.24	.307	4.08	92	3.59	85	8.64	132.7
11	Justin Verlander J. Verlander	534	323	142	93	.604	323	3.26	2,099	6	3	0	2014.0	1,693	730	792	234	61	0	9	8,199	42	9.38	2.39	3.93	1.05	25.6	6.5	1.11	.277	3.54	79	3.46	83	7.57	155.6
12	Blake Snell B. Snell	521	222	81	62	.566	222	3.15	1,440	1	1	0	1158.0	891	405	440	111	11	0	6	4,791	86	11.19	4.05	2.76	0.86	30.1	10.9	1.22	.288	3.42	77	3.31	79	6.92	111.7
13	Max Scherzer M. Scherzer	509	341	168	75	.691	341	2.97	2,660	12	5	0	2158.1	1,659	712	747	257	80	0	14	8,589	51	11.09	2.12	5.23	1.07	31.0	5.9	1.00	.276	3.11	72	3.05	74	6.92	259.4
14	Michael Wacha M. Wacha	503	309	110	75	.595	288	3.89	1,416	2	2	0	1627.1	1,571	703	746	194	42	4	18	6,846	43	7.83	2.78	2.82	1.07	20.7	7.3	1.27	.294	4.13	96	3.96	97	8.69	17.3
15	Gerrit Cole G. Cole	500	317	153	80	.657	317	3.18	2,251	8	5	0	1954.0	1,627	690	740	217	61	0	8	7,861	58	10.37	2.30	4.50	1.00	28.6	6.4	1.09	.292	3.41	79	3.16	77	7.49	213.5
16	Zack Wheeler Z. Wheeler	490	283	113	75	.601	283	3.28	1,820	5	3	0	1728.1	1,475	630	683	166	76	0	14	7,086	41	9.48	2.55	3.71	0.86	25.7	6.9	1.14	.289	3.56	82	3.28	80	7.68	164.6
17	Julio Teheran J. Teheran	483	248	80	81	.497	244	3.83	1,245	5	3	0	1444.2	1,280	614	660	199	71	1	22	6,022	27	7.76	3.01	2.58	1.24	20.7	8.0	1.22	.269	4.11	94	4.36	109	7.97	-62.8
18	Trevor Bauer T. Bauer	478	218	82	67	.550	208	3.76	1,399	6	3	1	1281.1	1,108	536	579	158	65	6	10	5,386	48	9.83	3.36	2.93	1.11	26.0	8.9	1.24	.289	4.07	88	3.84	91	7.78	59.1
19	Carlos Rodón C. Rodón	477	231	93	72	.564	226	3.73	1,409	3	1	0	1282.0	1,085	532	574	159	65	1	5	5,378	65	9.89	3.35	2.95	1.12	26.2	8.9	1.22	.283	4.03	90	3.83	90	7.62	58.2
20	Dallas Keuchel D. Keuchel	476	266	100	84	.543	251	3.97	1,216	11	4	0	1557.0	1,569	687	739	161	38	4	10	6,578	58	7.03	2.75	2.55	0.93	18.5	7.2	1.31	.300	4.27	97	3.91	94	9.07	41.7
21	Gio Gonzalez G. Gonzalez	475	217	72	61	.541	207	3.73	1,142	1	1	0	1198.1	1,104	497	530	107	29	1	13	5,087	36	8.58	3.57	2.40	0.80	22.4	9.3	1.32	.299	3.98	92	3.65	90	8.29	52.3
22	Yu Darvish Y. Darvish	474	268	99	84	.541	268	3.62	1,854	2	1	0	1586.2	1,304	638	667	217	73	0	7	6,489	75	10.52	2.69	3.91	1.23	28.6	7.3	1.12	.281	3.78	87	3.62	86	7.40	99.7
23	José Berríos J. Berríos	473	275	108	82	.568	273	4.08	1,481	5	1	0	1571.2	1,474	713	765	219	98	0	7	6,607	35	8.48	2.71	3.13	1.25	22.4	7.2	1.24	.289	4.38	97	4.18	99	8.44	14.3
24	Chris Archer C. Archer	463	237	62	86	.419	236	3.91	1,418	3	3	0	1327.2	1,209	577	637	162	40	0	8	5,601	70	9.61	3.14	3.06	1.10	25.3	8.3	1.26	.298	4.32	98	3.72	92	8.20	45.8
25	Jon Lester J. Lester	462	264	115	69	.625	264	3.58	1,428	6	2	0	1577.0	1,521	628	706	184	46	0	9	6,592	32	8.15	2.64	3.09	1.05	21.7	7.0	1.26	.299	4.03	86	3.81	93	8.68	45