4 teams were tied for the best record in their first 30 games in 2021, with a record of 18-12. The first three are the Boston Red Sox, the San Francisco Giants and the St. Louis Cardinals.

	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	Red Sox	18-12	2021	.600	30	18	12	1,003	149	266	67	3	37	134	83	14	249	12	3	1,110	450	107	2	8	4	28	.265	.328	.449	.776
2	Giants	18-12	2021	.600	30	18	12	962	133	220	45	4	39	130	114	8	277	13	3	1,096	390	88	7	5	8	29	.229	.314	.405	.719
3	Cardinals	18-12	2021	.600	30	18	12	980	142	227	43	5	40	131	91	14	259	9	4	1,097	400	88	6	6	10	22	.232	.304	.408	.712
4	Athletics	18-12	2021	.600	30	18	12	965	127	213	38	5	39	119	105	22	265	20	5	1,101	378	82	2	7	1	15	.221	.309	.392	.701
5	Mets	17-13	2021	.567	30	17	13	958	107	227	39	2	24	100	115	21	246	7	5	1,104	342	65	6	4	5	17	.237	.331	.357	.688
6	Dodgers	17-13	2021	.567	30	17	13	1,018	149	245	44	9	36	142	138	28	280	11	3	1,198	415	89	7	7	11	23	.241	.345	.408	.753
7	White Sox	17-13	2021	.567	30	17	13	991	146	250	45	4	26	135	115	15	267	17	6	1,133	381	75	5	7	2	20	.252	.337	.384	.721
8	Indians	17-13	2021	.567	30	17	13	982	127	208	46	6	40	121	101	7	254	16	1	1,097	386	92	3	4	4	20	.212	.289	.393	.682
9	Padres	17-13	2021	.567	30	17	13	993	118	231	35	3	29	111	119	10	250	35	8	1,134	359	67	3	9	5	31	.233	.318	.362	.680
10	Brewers	17-13	2021	.567	30	17	13	994	121	218	34	4	37	118	98	24	311	12	4	1,126	371	75	4	6	3	16	.219	.303	.373	.676
11	Yankees	16-14	2021	.533	30	16	14	980	123	221	37	0	39	115	134	8	259	6	1	1,128	375	76	2	4	2	26	.226	.322	.383	.705
12	Royals	16-14	2021	.533	30	16	14	982	133	233	46	8	31	126	95	8	244	25	8	1,101	388	85	6	10	2	18	.237	.307	.395	.702
13	Mariners	16-14	2021	.533	30	16	14	948	122	196	48	2	33	117	97	12	286	16	4	1,066	347	83	3	6	0	14	.207	.287	.366	.653
14	Blue Jays	16-14	2021	.533	30	16	14	1,008	144	243	35	1	41	134	93	12	257	17	3	1,122	403	77	2	7	4	20	.241	.311	.400	.711
15	Reds	15-15	2021	.500	30	15	15	1,016	155	247	49	4	43	145	98	22	289	6	6	1,152	433	96	8	8	3	17	.243	.321	.426	.747
16	Phillies	15-15	2021	.500	30	15	15	965	118	224	38	4	33	112	88	13	293	16	3	1,081	369	75	4	11	6	21	.232	.302	.382	.684
17	Astros	15-15	2021	.500	30	15	15	1,018	144	257	58	4	29	136	84	15	221	9	3	1,129	410	91	0	12	4	32	.252	.315	.403	.718
18	Diamondbacks	15-15	2021	.500	30	15	15	1,035	153	247	46	9	40	141	116	12	269	9	3	1,173	431	95	3	7	5	21	.239	.321	.416	.737
19	Rays	15-15	2021	.500	30	15	15	1,008	126	226	52	3	30	117	103	18	306	10	6	1,138	374	85	3	6	1	15	.224	.306	.371	.677
20	Orioles	14-16	2021	.467	30	14	16	1,002	114	228	50	2	30	107	81	6	275	9	2	1,099	372	82	4	6	1	13	.228	.288	.371	.659
21	Braves	14-16	2021	.467	30	14	16	973	140	228	47	3	44	135	108	19	259	7	1	1,115	413	94	6	9	10	20	.234	.320	.424	.745
22	Cubs	14-16	2021	.467	30	14	16	964	140	217	42	8	40	134	113	20	300	24	7	1,115	395	90	8	10	4	17	.225	.316	.410	.726
23	Nationals	13-17	2021	.433	30	13	17	983	109	242	41	1	30	105	84	17	253	13	7	1,095	375	72	4	7	6	24	.246	.314	.381	.696
24	Pirates	13-17	2021	.433	30	13	17	982	106	221	51	3	21	102	100	14	257	11	3	1,104	341	75	2	6	0	16	.225	.304	.347	.651
25	Angels	13-17	2021	.433	30	13	17	1,027	135	263	42	3	41	124	76	16	247	11	2	1,128	434	86	4	5	7	30	.256	.316	.423	.738