The Colorado Rockies have the worst record by a team this season, with a record of 9-42.

Interpreted as:

worst record on opening day this regular season

	TEAM	REC	SEASON	W%	G	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Rockies	9-42	2025	.176	51	9	42	1,686	167	370	81	14	43	166	145	16	498	26	10	1,863	608	138	6	10	5	33	.219	.286	.361	.647
2	White Sox	16-35	2025	.314	51	16	35	1,649	168	358	65	1	40	163	154	11	431	41	7	1,830	545	106	5	11	1	30	.217	.287	.331	.617
3	Orioles	16-33	2025	.327	49	16	33	1,637	188	385	69	7	56	179	137	23	441	27	11	1,812	636	132	1	14	2	36	.235	.301	.389	.689
4	Pirates	18-34	2025	.346	52	18	34	1,713	157	378	59	7	36	152	185	20	447	52	13	1,931	559	102	4	9	9	49	.221	.303	.326	.629
5	Marlins	19-30	2025	.388	49	19	30	1,672	201	417	79	8	46	193	151	13	412	43	17	1,856	650	133	9	11	5	26	.249	.315	.389	.703
6	Athletics	22-30	2025	.423	52	22	30	1,782	220	452	83	6	65	212	162	10	390	26	7	1,968	742	154	3	11	2	49	.254	.318	.416	.734
7	Nationals	23-28	2025	.451	51	23	28	1,690	220	409	79	8	51	208	153	25	400	51	17	1,890	657	138	10	12	1	29	.242	.312	.389	.701
8	Braves	24-26	2025	.480	50	24	26	1,699	206	417	70	6	54	198	169	14	419	33	9	1,897	661	130	5	10	4	31	.245	.317	.389	.706
9	Rays	24-26	2025	.480	50	24	26	1,669	196	403	71	3	46	188	152	11	422	68	14	1,848	618	120	0	16	0	35	.241	.306	.370	.677
10	Reds	25-27	2025	.481	52	25	27	1,746	234	425	93	5	53	224	180	19	463	52	17	1,957	687	151	3	9	4	30	.243	.319	.393	.713
11	Rangers	25-27	2025	.481	52	25	27	1,679	172	377	64	5	54	169	133	17	417	45	12	1,844	613	123	2	13	2	26	.225	.286	.365	.651
12	Brewers	25-27	2025	.481	52	25	27	1,721	225	398	66	5	45	205	181	20	428	68	15	1,946	609	116	13	11	7	25	.231	.310	.354	.664
13	Red Sox	26-26	2025	.500	52	26	26	1,807	259	464	99	8	65	249	178	22	472	50	13	2,022	774	172	4	11	10	23	.257	.329	.428	.757
14	Angels	25-25	2025	.500	50	25	25	1,661	219	378	72	6	77	211	128	23	490	23	7	1,829	693	155	4	13	6	30	.228	.290	.417	.707
15	Blue Jays	25-25	2025	.500	50	25	25	1,681	204	418	85	2	44	195	167	19	369	32	9	1,894	639	131	11	16	9	37	.249	.321	.380	.701
16	Astros	26-25	2025	.510	51	26	25	1,693	207	423	70	6	48	198	157	25	392	24	13	1,896	649	124	8	13	5	39	.250	.320	.383	.704
17	Diamondbacks	26-25	2025	.510	51	26	25	1,728	259	438	101	9	72	252	193	23	385	44	11	1,973	773	182	8	21	7	35	.253	.333	.447	.780
18	Royals	28-24	2025	.538	52	28	24	1,737	173	426	89	11	32	171	125	18	360	42	18	1,909	633	132	11	18	8	23	.245	.300	.364	.664
19	Cardinals	28-23	2025	.549	51	28	23	1,735	244	454	97	2	47	230	171	24	386	32	11	1,952	696	146	6	16	9	41	.262	.334	.401	.735
20	Guardians	28-22	2025	.560	50	28	22	1,625	202	379	68	5	54	190	162	19	391	37	13	1,834	619	127	7	21	6	27	.233	.307	.381	.687
21	Twins	28-22	2025	.560	50	28	22	1,663	204	401	83	7	47	195	142	29	411	27	10	1,846	639	137	1	11	4	30	.241	.310	.384	.694
22	Padres	28-21	2025	.571	49	28	21	1,629	207	415	71	7	45	189	151	12	345	37	11	1,817	635	123	11	14	5	33	.255	.320	.390	.710
23	Mariners	29-21	2025	.580	50	29	21	1,693	234	402	65	2	70	226	200	27	448	47	15	1,939	681	137	8	11	3	30	.237	.326	.402	.728
24	Giants	30-21	2025	.588	51	30	21	1,687	234	398	79	7	53	223	183	14	439	25	12	1,904	650	139	8	12	4	29	.236	.314	.385	.699
25	Mets	30-21	2025	.588	51	30	21	1,695	223	414	87	12	54	214	189	29	392	39	6	1,935	687	153	3	19	9	46	.244	.327	.405	.732