what is the most grandslams by a single player in a season

Travis Hafner and Don Mattingly are tied for the most grand slams in a season, with 6 grand slams.

	NAME	GRANDSLAM	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Travis Hafner T. Hafner	6	2006	CLE	129	454	100	140	31	1	42	117	100	7	111	0	0	563	299	74	0	2	16	10	.308	.439	.659	1.097
2	Don Mattingly D. Mattingly	6	1987	NYY	141	569	93	186	38	2	30	115	51	1	38	1	4	629	318	70	0	8	13	16	.327	.378	.559	.937
3	Albert Pujols A. Pujols	5	2009	STL	160	568	124	186	45	1	47	135	115	9	64	16	4	700	374	93	0	8	44	23	.327	.443	.658	1.101
4	Richie Sexson R. Sexson	5	2006	SEA	158	591	75	156	40	0	34	107	64	4	154	1	1	663	298	74	0	4	5	17	.264	.338	.504	.842
5	Royce Lewis R. Lewis	4	2023	MIN	58	217	36	67	7	0	15	52	20	2	55	6	1	239	119	22	0	0	0	5	.309	.372	.548	.921
6	Lourdes Gurriel Jr. L. Gurriel Jr.	4	2021	TOR	141	500	62	138	28	2	21	84	32	2	102	1	3	541	233	51	1	6	1	8	.276	.319	.466	.785
7	Scooter Gennett S. Gennett	4	2017	CIN	141	461	80	136	22	3	27	97	30	4	114	3	2	497	245	52	0	2	1	15	.295	.342	.531	.874
8	Alexei Ramirez A. Ramirez	4	2008	CWS	136	480	65	139	22	2	21	77	18	3	61	13	9	509	228	45	4	4	3	14	.290	.317	.475	.792
9	Phil Nevin P. Nevin	4	2001	SDP	149	546	97	167	31	0	41	126	71	4	147	4	4	624	321	72	0	3	7	13	.306	.388	.588	.976
10	Edgar Martinez E. Martinez	4	2000	SEA	153	556	100	180	31	0	37	145	96	5	95	3	0	665	322	68	0	8	8	13	.324	.423	.579	1.002
11	Jason Giambi J. Giambi	4	2000	OAK	152	510	108	170	29	1	43	137	137	9	96	2	0	664	330	73	0	8	6	9	.333	.476	.647	1.123
12	Mike Piazza M. Piazza	4	1998	TOT	151	561	88	184	38	1	32	111	58	2	80	1	0	626	320	71	0	5	14	15	.328	.390	.570	.960
13	Albert Belle A. Belle	4	1997	CWS	161	634	90	174	45	1	30	116	53	6	105	4	4	701	311	76	0	8	6	26	.274	.332	.491	.823
14	Eugenio Suárez E. Suárez	3	2025	AZ	76	279	48	70	14	0	25	67	21	10	80	1	0	314	159	39	0	4	1	5	.251	.322	.570	.892
15	Rhys Hoskins R. Hoskins	3	2024	MIL	131	449	59	96	14	0	26	81	53	7	149	3	0	515	188	40	0	6	1	11	.214	.303	.419	.722
16	Alex Bregman A. Bregman	3	2023	HOU	161	622	103	163	28	4	25	98	92	8	87	3	1	724	274	57	0	2	1	22	.262	.363	.441	.804
17	Max Muncy M. Muncy	3	2023	LAD	135	482	95	102	17	1	36	105	85	6	153	1	2	579	229	54	0	6	4	8	.212	.333	.475	.808
18	Adolis García A. García	3	2023	TEX	148	555	108	136	29	0	39	107	65	6	175	9	1	632	282	68	0	6	0	12	.245	.328	.508	.836
19	Brett Phillips B. Phillips	3	2021	TBR	118	253	50	52	9	4	13	44	33	2	113	14	3	292	108	26	2	2	0	3	.206	.300	.427	.727
20	Jose Altuve J. Altuve	3	2021	HOU	146	601	117	167	32	1	31	83	66	4	91	5	3	678	294	64	1	6	3	9	.278	.350	.489	.839
21	C.J. Cron	3	2021	COL	142	470	70	132	31	1	28	92	60	13	117	1	0	547	249	60	0	4	3	11	.281	.375	.530	.905
22	Xander Bogaerts X. Bogaerts	3	2018	BOS	136	513	72	148	45	3	23	103	55	6	102	8	2	580	268	71	0	6	4	14	.288	.360	.522	.883
23	J.D. Martinez	3	2017	TOT	119	432	85	131	26	3	45	104	53	0	128	4	0	489	298	74	0	4	8	23	.303	.376	.690	1.066
24	Chris Taylor C. Taylor	3	2017	LAD	140	514	85	148	34	5	21	72	50	3	142	17	4	568	255	60	0	1	0	2	.288	.354	.496	.850
25	Justin Upton J. Upton	3	2017	TOT	152	557	100	152	44	0	35	109	74	3	180	14	5	635	301	79	0	1	3	9	.273	.361	.540	.901