which team has given up the most grand slams in a single season

The Washington Nationals and the Detroit Tigers are tied for allowing the most grand slams in a season, with 14 grand slams.

	TEAM	GRANDSLAM	SEASON	G	W%	W	L	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	Nationals	14	2021	731	.383	915	1,471	162	4.82	1,346	1	0	36	1394.1	1,364	747	820	247	548	71	161	46	6,073	43	8.69	3.54	2.46	1.59	22.2	9.0	1.37	.289	5.29	8.80
2	Tigers	14	1996	588	.314	715	1,561	162	6.38	957	10	4	22	1432.2	1,699	1,015	1,103	241	784	80	152	63	6,713	82	6.01	4.93	1.22	1.51	14.3	11.7	1.73	.313	6.93	10.67
3	Pirates	12	2022	666	.382	893	1,447	162	4.66	1,250	0	0	33	1421.0	1,432	736	817	164	586	87	162	23	6,263	62	7.92	3.71	2.13	1.04	20.0	9.4	1.42	.304	5.17	9.07
4	Mets	12	2010	653	.460	1,079	1,269	162	3.73	1,106	8	4	36	1453.0	1,438	602	652	135	545	52	154	55	6,245	48	6.85	3.38	2.03	0.84	17.7	8.7	1.36	.296	4.04	8.91
5	Orioles	12	2006	634	.436	1,000	1,295	162	5.35	1,016	5	1	35	1419.0	1,579	844	899	216	613	48	157	26	6,327	59	6.44	3.89	1.66	1.37	16.1	9.7	1.54	.307	5.70	10.01
6	Expos	12	2000	614	.389	934	1,464	162	5.14	1,011	4	2	39	1424.2	1,575	814	902	181	579	60	158	40	6,340	55	6.39	3.66	1.75	1.14	15.9	9.1	1.51	.309	5.70	9.95
7	Orioles	11	2021	731	.322	764	1,612	162	5.85	1,234	1	1	26	1402.0	1,518	911	956	258	563	68	161	12	6,252	88	7.92	3.61	2.19	1.66	19.7	9.0	1.48	.305	6.14	9.74
8	Brewers	11	2021	695	.580	1,393	1,010	162	3.50	1,618	2	1	44	1436.0	1,156	558	623	168	537	77	160	19	5,990	60	10.14	3.37	3.01	1.05	27.0	9.0	1.18	.275	3.90	7.25
9	Royals	11	2018	645	.356	778	1,406	162	4.95	1,157	2	0	33	1432.0	1,542	787	833	205	549	51	160	28	6,284	68	7.27	3.45	2.11	1.29	18.4	8.7	1.46	.309	5.24	9.69
10	Padres	11	2017	679	.433	1,013	1,329	162	4.70	1,325	2	1	45	1430.2	1,417	747	816	226	554	75	160	28	6,169	73	8.34	3.49	2.39	1.42	21.5	9.0	1.38	.299	5.13	8.91
11	Indians	11	2008	561	.482	1,060	1,139	162	4.46	986	10	5	31	1437.0	1,530	712	761	170	444	51	152	28	6,164	44	6.18	2.78	2.22	1.06	16.0	7.2	1.37	.301	4.77	9.58
12	Mariners	11	2006	591	.474	1,070	1,189	162	4.60	1,067	6	2	47	1446.2	1,500	739	792	183	560	53	156	50	6,294	47	6.64	3.48	1.91	1.14	17.0	8.9	1.42	.297	4.93	9.33
13	Padres	11	2000	605	.463	1,095	1,268	162	4.52	1,071	5	0	46	1459.1	1,443	733	815	191	649	68	157	50	6,414	66	6.61	4.00	1.65	1.18	16.7	10.1	1.43	.282	5.03	8.90
14	Giants	11	1996	587	.399	914	1,378	162	4.72	997	9	1	35	1442.1	1,520	756	862	194	570	67	153	60	6,330	58	6.22	3.56	1.75	1.21	15.8	9.0	1.45	.295	5.38	9.48
15	Mariners	11	1996	564	.518	1,191	1,109	161	5.21	1,000	4	2	34	1431.2	1,562	829	895	216	605	60	157	52	6,351	37	6.29	3.80	1.65	1.36	15.7	9.5	1.51	.301	5.63	9.82
16	Cubs	10	2021	761	.421	1,043	1,432	162	4.88	1,358	1	0	40	1412.2	1,386	766	839	235	596	98	161	25	6,202	60	8.65	3.80	2.28	1.50	21.9	9.6	1.40	.294	5.35	8.83
17	Orioles	10	2018	652	.295	683	1,630	162	5.19	1,203	2	0	28	1431.0	1,552	825	892	234	589	67	160	29	6,340	81	7.57	3.70	2.04	1.47	19.0	9.3	1.50	.310	5.61	9.76
18	Blue Jays	10	2018	752	.449	1,094	1,341	162	4.85	1,298	0	0	39	1433.2	1,476	773	832	208	551	67	162	19	6,265	71	8.15	3.46	2.36	1.31	20.7	8.8	1.41	.306	5.22	9.27
19	Brewers	10	2010	657	.467	1,056	1,206	162	4.59	1,258	3	3	35	1439.0	1,487	734	804	173	582	48	159	42	6,324	71	7.87	3.64	2.16	1.08	19.9	9.2	1.44	.308	5.03	9.30
20	Mariners	10	2007	618	.535	1,250	1,088	162	4.77	1,020	6	4	43	1434.1	1,578	760	813	147	546	62	156	39	6,313	59	6.40	3.43	1.87	0.92	16.2	8.6	1.48	.315	5.10	9.90
21	Devil Rays	10	2005	563	.421	946	1,299	162	5.40	949	1	0	43	1421.2	1,570	853	936	194	615	64	161	41	6,384	53	6.01	3.89	1.54	1.23	14.9	9.6	1.54	.302	5.93	9.94
22	Angels	10	2003	537	.475	1,085	1,201	162	4.28	980	5	2	39	1431.1	1,444	681	743	190	486	76	157	38	6,161	53	6.16	3.06	2.02	1.19	15.9	7.9	1.35	.283	4.67	9.08
23	Astros	10	2001	567	.555	1,249	1,001	162	4.39	1,228	7	1	48	1454.2	1,453	709	769	221	486	70	155	22	6,236	42	7.60	3.01	2.53	1.37	19.7	7.8	1.33	.291	4.76	8.99
24	White Sox	10	2000	628	.576	1,316	969	162	4.67	1,037	5	2	43	1450.1	1,509	752	839	195	614	54	157	27	6,337	43	6.44	3.81	1.69	1.21	16.4	9.7	1.46	.296	5.21	9.36
25	Blue Jays	10	1999	539	.505	1,091	1,071	162	4.93	1,009	14	3	39	1439.0	1,582	788	862	191	575	53	148	25	6,368	55	6.31	3.60	1.75	1.19	15.8	9.0	1.50	.306	5.39	9.89