Between the 1970 and 1980 seasons, the Cincinnati Reds and the Baltimore Orioles were tied for the best record in a season, with a record of 108-54.

	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	Reds	108-54	1975	.667	162	108	54	5,581	840	1,515	278	37	124	779	691	35	916	168	36	6,418	2,239	439	66	45	67	122	.271	.353	.401	.754
2	Orioles	108-54	1970	.667	162	108	54	5,545	792	1,424	213	25	179	748	717	44	952	84	39	6,416	2,224	417	64	46	64	110	.257	.344	.401	.745
3	Orioles	102-57	1979	.642	159	102	57	5,371	757	1,401	258	24	181	717	608	31	847	99	49	6,106	2,250	463	42	54	52	143	.261	.336	.419	.755
4	Orioles	101-57	1971	.639	158	101	57	5,303	742	1,382	207	25	158	702	672	46	844	66	38	6,143	2,113	390	85	37	69	127	.261	.347	.398	.745
5	Yankees	103-59	1980	.636	162	103	59	5,553	820	1,484	239	34	189	772	643	28	739	86	36	6,329	2,358	462	51	54	58	136	.267	.343	.425	.768
6	Royals	102-60	1977	.630	162	102	60	5,594	822	1,549	299	77	146	773	522	45	687	170	87	6,268	2,440	522	49	58	50	104	.277	.340	.436	.776
7	Reds	102-60	1976	.630	162	102	60	5,702	857	1,599	271	63	141	802	681	28	902	210	57	6,538	2,419	475	67	60	63	103	.280	.357	.424	.781
8	Dodgers	102-60	1974	.630	162	102	60	5,557	798	1,511	231	34	139	744	597	28	820	149	75	6,332	2,227	404	86	64	95	117	.272	.342	.401	.743
9	Reds	102-60	1970	.630	162	102	60	5,540	775	1,498	253	45	191	726	547	29	984	115	52	6,222	2,414	489	58	48	70	119	.270	.336	.436	.772
10	Athletics	101-60	1971	.627	161	101	60	5,494	691	1,383	195	25	160	642	542	37	1,018	80	53	6,191	2,108	380	80	38	54	113	.252	.321	.384	.705
11	Phillies	101-61	1977	.623	162	101	61	5,546	847	1,548	266	56	186	795	573	38	806	135	68	6,290	2,484	508	59	74	75	121	.279	.346	.448	.794
12	Phillies	101-61	1976	.623	162	101	61	5,528	770	1,505	259	45	110	708	542	40	793	127	70	6,236	2,184	414	59	67	55	119	.272	.338	.395	.733
13	Pirates	96-59	1972	.619	155	96	59	5,490	691	1,505	251	47	110	654	404	25	871	49	30	6,021	2,180	408	52	50	69	110	.274	.324	.397	.721
14	Orioles	100-62	1980	.617	162	100	62	5,585	805	1,523	258	29	156	751	587	21	766	111	38	6,281	2,307	443	42	46	38	158	.273	.342	.413	.755
15	Yankees	100-62	1977	.617	162	100	62	5,605	831	1,576	267	47	184	784	533	28	681	93	57	6,260	2,489	498	46	48	49	117	.281	.344	.444	.788
16	Reds	95-59	1972	.617	154	95	59	5,241	707	1,317	214	44	124	650	606	37	914	140	63	6,003	1,991	382	65	54	85	109	.251	.330	.380	.710
17	Yankees	100-63	1978	.613	163	100	63	5,583	735	1,489	228	38	125	693	505	42	695	98	42	6,219	2,168	391	37	52	45	126	.267	.329	.388	.718
18	Reds	99-63	1973	.611	162	99	63	5,505	741	1,398	232	34	137	686	639	31	947	148	55	6,304	2,109	403	78	51	74	118	.254	.332	.383	.715
19	Yankees	97-62	1976	.610	159	97	62	5,555	730	1,496	231	36	120	681	470	35	616	163	65	6,156	2,159	387	50	46	36	94	.269	.328	.389	.716
20	Red Sox	99-64	1978	.607	163	99	64	5,587	796	1,493	270	46	172	738	582	24	835	74	51	6,316	2,371	488	65	58	43	135	.267	.336	.424	.760
21	Pirates	98-64	1979	.605	163	98	64	5,661	775	1,541	264	52	148	710	483	32	855	180	66	6,330	2,353	464	98	56	102	113	.272	.330	.416	.746
22	Dodgers	98-64	1977	.605	162	98	64	5,589	769	1,484	223	28	191	729	588	23	896	114	62	6,327	2,336	442	83	44	67	103	.266	.336	.418	.753
23	Athletics	98-64	1975	.605	162	98	64	5,415	758	1,376	220	33	151	703	609	51	846	183	82	6,184	2,115	404	74	35	45	107	.254	.333	.391	.724
24	Reds	98-64	1974	.605	163	98	64	5,535	776	1,437	271	35	135	714	693	30	940	146	49	6,372	2,183	441	68	46	87	121	.260	.343	.394	.737
25	Twins	98-64	1970	.605	162	98	64	5,483	744	1,438	230	41	153	694	501	42	905	57	52	6,143	2,209	424	79	38	65	132	.262	.327	.403	.730