The Arizona Diamondbacks have a record of 12-12 on April 21 all-time.

	TEAM	DATE	REC	TM		OPP	RESULT	W%	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Diamondbacks	4/21/1999	1-0	ARI	vs	PHI	W 4-2	1.000	33	4	8	1	0	2	4	3	0	4	1	0	37	15	3	1	0	0	0	.242	.306	.455	.760
2	Diamondbacks	4/21/2000	0-1	ARI	vs	SFG	L 5-11	.000	39	5	12	6	0	2	5	4	0	7	0	1	43	24	8	0	0	0	0	.308	.372	.615	.987
3	Diamondbacks	4/21/2001	1-0	ARI	vs	COL	W 10-5	1.000	33	10	8	0	0	4	10	5	0	10	1	0	38	20	4	0	0	1	0	.242	.342	.606	.948
4	Diamondbacks	4/21/2002	1-0	ARI	vs	COL	W 7-1	1.000	34	7	9	4	0	2	6	2	0	7	0	0	36	19	6	0	0	0	0	.265	.306	.559	.864
5	Diamondbacks	4/21/2004	0-1	ARI	@	MIL	L 6-10	.000	30	6	8	3	0	1	6	5	0	8	0	1	37	14	4	2	0	0	2	.267	.371	.467	.838
6	Diamondbacks	4/21/2005	0-1	ARI	@	SFG	L 3-4	.000	47	3	11	3	0	1	3	2	0	6	1	0	49	17	4	0	0	1	2	.234	.265	.362	.627
7	Diamondbacks	4/21/2006	0-1	ARI	@	LAD	L 3-6	.000	35	3	8	3	1	0	3	3	1	9	1	0	39	13	4	0	0	0	0	.229	.308	.371	.679
8	Diamondbacks	4/21/2007	0-1	ARI	@	SFG	L 0-1	.000	31	0	5	0	0	0	0	5	0	8	0	0	36	5	0	0	0	0	1	.161	.278	.161	.439
9	Diamondbacks	4/21/2008	1-0	ARI	vs	SFG	W 4-2	1.000	34	4	11	4	0	3	4	2	0	3	0	1	36	24	7	0	0	0	1	.324	.361	.706	1.067
10	Diamondbacks	4/21/2009	0-1	ARI	vs	COL	L 6-9	.000	38	6	11	1	0	3	5	3	0	6	1	0	41	21	4	0	0	0	0	.289	.341	.553	.894
11	Diamondbacks	4/21/2010	0-1	ARI	vs	STL	L 4-9	.000	32	4	7	4	0	0	3	4	0	14	0	0	36	11	4	0	0	0	2	.219	.306	.344	.649
12	Diamondbacks	4/21/2011	0-1	ARI	@	CIN	L 4-7	.000	32	4	6	1	0	2	4	3	0	9	0	0	36	13	3	1	0	0	0	.188	.257	.406	.663
13	Diamondbacks	4/21/2012	0-1	ARI	vs	ATL	L 2-3	.000	31	2	5	1	0	1	2	1	0	13	0	0	33	9	2	1	0	0	0	.161	.188	.290	.478
14	Diamondbacks	4/21/2013	1-0	ARI	@	COL	W 5-4	1.000	34	5	8	3	0	1	5	4	0	5	0	0	39	14	4	0	1	0	0	.235	.308	.412	.719
15	Diamondbacks	4/21/2014	0-1	ARI	@	CHC	L 1-5	.000	34	1	7	1	0	1	1	1	0	11	0	0	35	11	2	0	0	0	0	.206	.229	.324	.552
16	Diamondbacks	4/21/2015	0-1	ARI	vs	TEX	L 1-7	.000	36	1	7	0	0	0	1	2	0	8	0	0	38	7	0	0	0	0	0	.194	.237	.194	.431
17	Diamondbacks	4/21/2016	1-0	ARI	@	SFG	W 6-2	1.000	35	6	10	2	1	1	6	3	1	3	4	0	39	17	4	0	0	0	1	.286	.359	.486	.845
18	Diamondbacks	4/21/2017	1-0	ARI	vs	LAD	W 13-5	1.000	38	13	14	6	0	1	12	8	0	11	0	0	46	23	7	0	0	2	0	.368	.478	.605	1.084
19	Diamondbacks	4/21/2018	1-0	ARI	vs	SDP	W 6-2	1.000	32	6	10	1	2	1	6	5	0	10	0	2	37	18	4	0	0	0	0	.313	.405	.563	.968
20	Diamondbacks	4/21/2019	0-1	ARI	@	CHC	L 1-2	.000	28	1	3	0	0	1	1	2	0	6	0	0	30	6	1	0	0	0	2	.107	.167	.214	.381
21	Diamondbacks	4/21/2021	1-0	ARI	@	CIN	W 8-5	1.000	36	8	6	0	0	1	7	7	3	16	0	0	46	9	1	0	0	1	1	.167	.348	.250	.598
22	Diamondbacks	4/21/2022	1-0	ARI	@	WSH	W 4-3	1.000	35	4	9	1	0	3	4	2	2	8	0	1	39	19	4	0	0	0	0	.257	.333	.543	.876
23	Diamondbacks	4/21/2023	1-0	ARI	vs	SDP	W 9-0	1.000	36	9	12	3	0	0	9	3	0	9	0	0	39	15	3	0	0	0	0	.333	.385	.417	.801
24	Diamondbacks	4/21/2024	1-0	ARI	@	SFG	W 5-3	1.000	31	5	7	2	0	0	5	4	2	2	0	1	39	9	2	0	2	0	1	.226	.333	.290	.624
	Total		12-12					.500	824	117	202	50	4	31	112	83	9	193	9	7	924	353	85	5	3	5	13	.245	.320	.428	.748