Since 2022, Reed Garrett and Alex Vesia are tied for allowing the most grand slams, with 4 grand slams.

Interpreted as:

most grand slams given up by a player since 2022

	NAME	GRANDSLAM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Reed Garrett R. Garrett	4	129	12	12	.500	1	4.38	169	0	0	7	141.2	132	69	77	15	71	5	24	4	621	7	10.74	4.51	2.38	0.95	27.2	11.4	1.43	.324	4.89	8.39
2	Alex Vesia A. Vesia	4	254	14	11	.560	1	2.74	310	0	0	12	230.0	159	70	81	25	96	10	37	10	944	9	12.13	3.76	3.23	0.98	32.8	10.2	1.11	.266	3.17	6.22
3	Bobby Miller B. Miller	3	37	12	8	.600	36	5.44	178	0	0	0	185.1	185	112	113	31	64	9	1	1	791	17	8.64	3.11	2.78	1.51	22.5	8.1	1.34	.303	5.49	8.98
4	Edward Cabrera E. Cabrera	3	82	25	26	.490	80	3.95	450	0	0	0	405.1	325	178	192	53	197	28	0	0	1,724	12	9.99	4.37	2.28	1.18	26.1	11.4	1.29	.273	4.26	7.22
5	Josh Winckowski J. Winckowski	3	121	13	14	.481	21	4.20	195	0	0	5	242.1	266	113	132	29	89	10	29	6	1,071	3	7.24	3.31	2.19	1.08	18.2	8.3	1.46	.317	4.90	9.88
6	MacKenzie Gore M. Gore	3	105	26	41	.388	102	4.19	589	0	0	0	532.1	523	248	274	69	223	21	0	0	2,302	38	9.96	3.77	2.64	1.17	25.6	9.7	1.40	.324	4.63	8.84
7	Martín Pérez M. Pérez	3	104	28	24	.538	88	3.79	413	1	1	0	529.0	519	223	238	60	189	17	3	1	2,247	10	7.03	3.22	2.19	1.02	18.4	8.4	1.34	.293	4.05	8.83
8	Austin Gomber A. Gomber	3	102	19	35	.352	86	5.50	332	0	0	0	486.1	561	297	308	92	132	7	2	2	2,100	16	6.14	2.44	2.52	1.70	15.8	6.3	1.42	.305	5.70	10.38
9	Jameson Taillon J. Taillon	3	113	45	30	.600	112	3.92	514	0	0	1	626.2	588	273	295	98	133	11	1	0	2,577	10	7.38	1.91	3.86	1.41	19.9	5.2	1.15	.269	4.24	8.44
10	Josh Hader J. Hader	3	236	18	18	.500	0	3.09	347	0	0	130	230.0	147	79	90	31	92	10	200	3	934	14	13.58	3.60	3.77	1.21	37.2	9.9	1.04	.256	3.52	5.75
11	Chris Bassitt C. Bassitt	3	126	52	40	.565	125	3.77	687	2	1	0	723.0	689	303	330	87	230	54	0	4	3,065	15	8.55	2.86	2.99	1.08	22.4	7.5	1.27	.300	4.11	8.58
12	Dylan Cease D. Cease	3	130	43	40	.518	130	3.67	880	2	2	0	718.1	587	293	324	74	293	19	0	7	3,015	37	11.03	3.67	3.00	0.93	29.2	9.7	1.23	.293	4.06	7.35
13	Sean Manaea S. Manaea	3	114	29	25	.537	82	4.40	543	0	0	0	518.0	455	253	276	77	167	27	5	1	2,171	9	9.43	2.90	3.25	1.34	25.0	7.7	1.20	.279	4.80	7.91
14	Charlie Morton C. Morton	3	124	40	39	.506	118	4.45	704	0	0	0	642.2	605	318	334	88	283	62	1	5	2,799	13	9.86	3.96	2.49	1.23	25.2	10.1	1.38	.311	4.68	8.47
15	Joe Ryan J. Ryan	3	110	44	35	.557	109	3.78	689	1	1	0	614.2	518	258	271	97	143	33	0	0	2,503	7	10.09	2.09	4.82	1.42	27.5	5.7	1.08	.273	3.97	7.58
16	Reid Detmers R. Detmers	3	131	20	27	.426	70	4.64	479	1	1	3	428.2	407	221	233	56	169	25	7	7	1,840	15	10.06	3.55	2.83	1.18	26.0	9.2	1.34	.316	4.89	8.55
17	Génesis Cabrera G. Cabrera	3	209	9	7	.563	0	4.55	175	0	0	4	205.2	197	104	115	38	91	10	36	11	891	7	7.66	3.98	1.92	1.66	19.6	10.2	1.40	.276	5.03	8.62
18	Seth Lugo S. Lugo	3	147	35	25	.583	85	3.51	515	1	0	3	563.1	508	220	233	71	157	21	20	3	2,323	14	8.23	2.51	3.28	1.13	22.2	6.8	1.18	.280	3.72	8.12
19	Will Warren W. Warren	2	39	9	11	.450	38	5.16	200	0	0	0	185.0	191	106	117	27	75	5	1	0	821	2	9.73	3.65	2.67	1.31	24.4	9.1	1.44	.319	5.69	9.29
20	Cam Booser C. Booser	2	82	4	7	.364	0	4.28	78	0	0	2	73.2	69	35	39	13	35	2	17	2	326	3	9.53	4.28	2.23	1.59	23.9	10.7	1.41	.283	4.76	8.43
21	Mitch Spence M. Spence	2	67	11	16	.407	32	4.77	192	0	0	1	236.0	261	125	136	36	70	10	5	2	1,026	9	7.32	2.67	2.74	1.37	18.7	6.8	1.40	.313	5.19	9.95
22	Yoshinobu Yamamoto Y. Yamamoto	2	48	19	10	.655	48	2.66	306	0	0	0	263.2	191	78	85	21	81	4	0	0	1,052	7	10.45	2.76	3.78	0.72	29.1	7.7	1.03	.266	2.90	6.52
23	Jacob Latz J. Latz	2	82	4	3	.571	8	2.99	121	0	0	1	135.2	109	45	48	13	67	1	16	5	562	6	8.03	4.44	1.81	0.86	21.5	11.9	1.30	.267	3.18	7.23
24	Alek Jacob A. Jacob	2	39	1	0	1.000	0	4.06	47	0	0	0	51.0	45	23	24	7	17	8	13	0	220	0	8.29	3.00	2.76	1.24	21.4	7.7	1.22	.270	4.24	7.94
25	Justin Martinez J. Martinez	2	91	6	8	.429	0	3.77	127	0	0	14	98.0	79	41	48	5	59	7	41	8	432	11	11.66	5.42	2.15	0.46	29.4	13.7	1.41	.316	4.41	7.26