The Boston Red Sox had their best record against the AL in a season in 1912, with a record of 105-47.

Interpreted as:

red sox record in a regular season record vs al

	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	105-47	1912	.691	154	105	47	5,070	799	1,404	269	84	29	683	561	48		185		5,876	1,928	382	197				.277	.354	.380	.735
2	Red Sox	104-50	1946	.675	156	104	50	5,318	792	1,441	268	50	109	737	687	15	662	45		6,126	2,136	427	106			133	.271	.356	.402	.758
3	Red Sox	101-50	1915	.669	155	101	50	5,025	669	1,308	202	76	14		528	50	475	118		5,869	1,704	292	266				.260	.337	.339	.676
4	Americans	91-47	1903	.659	141	91	47	4,919	708	1,336	222	113	48	612	259	38	241	141		5,351	1,928	383	135				.272	.313	.392	.705
5	Red Sox	92-50	2018	.648	142	92	50	4,927	770	1,330	312	25	190	727	496	47	1,098	109	26	5,516	2,262	527	5	41	28	111	.270	.340	.459	.799
6	Red Sox	96-58	1949	.623	155	96	58	5,322	896	1,500	272	36	131	835	835	17	510	43		6,252	2,237	439	78			169	.282	.381	.420	.801
7	Red Sox	96-59	1948	.619	155	96	59	5,363	907	1,471	277	40	121	854	823	32	552	38		6,284	2,191	438	66			145	.274	.374	.409	.783
8	Red Sox	89-55	2004	.618	144	89	55	5,091	850	1,434	331	21	200	815	588	62	1,048	59	27	5,800	2,407	552	9	50	34	108	.282	.360	.473	.833
9	Americans	95-59	1904	.617	157	95	59	5,241	608	1,295	194	105	26	522	344	53		101		5,797	1,777	325	159				.247	.300	.339	.639
10	Red Sox	93-59	1942	.612	152	93	59	5,248	761	1,451	244	55	103	702	591	22	508	68		5,984	2,114	402	123			94	.276	.352	.403	.755
11	Red Sox	88-56	2002	.611	144	88	56	5,049	796	1,431	322	28	162	752	497	65	820	68	26	5,675	2,295	512	14	50	37	126	.283	.352	.455	.807
12	Red Sox	88-56	1999	.611	144	88	56	4,966	766	1,404	304	37	157	739	547	52	817	55	36	5,644	2,253	498	30	49	24	118	.283	.357	.454	.810
13	Red Sox	94-60	1950	.610	154	94	60	5,516	1,027	1,665	287	61	161	972	719	25	583	32		6,322	2,557	509	62			152	.302	.385	.464	.848
14	Red Sox	99-64	1978	.607	163	99	64	5,587	796	1,493	270	46	172	737	582	24	835	74	51	6,316	2,371	488	65	58	43	135	.267	.336	.424	.760
15	Red Sox	97-64	1977	.602	161	97	64	5,510	859	1,551	258	56	213	828	528	42	905	66	47	6,184	2,560	527	45	59	38	132	.281	.345	.465	.810
16	Red Sox	86-58	1995	.597	144	86	58	4,997	791	1,399	286	31	175	754	560	65	923	99	44	5,716	2,272	492	45	49	38	129	.280	.357	.455	.812
17	Red Sox	75-51	1918	.595	126	75	51	3,981	474	990	159	54	15		405	29	322	109		4,609	1,302	228	194				.249	.323	.327	.650
18	Red Sox	91-62	1914	.595	159	91	62	5,112	589	1,278	225	85	18		489	40	550	177		5,815	1,727	328	174				.250	.320	.338	.658
19	Red Sox	95-65	1975	.594	160	95	65	5,448	796	1,500	284	44	134	756	565	34	741	66	58	6,175	2,274	462	75	53	57	137	.275	.344	.417	.761
20	Red Sox	90-62	1917	.592	157	90	62	5,045	555	1,240	196	64	14		467	35	473	106		5,858	1,606	274	311				.246	.314	.318	.632
21	Red Sox	91-63	1916	.591	156	91	63	5,030	550	1,250	198	56	14		466	41	482	129		5,777	1,602	268	240				.249	.317	.318	.636
22	Red Sox	88-61	1938	.591	150	88	61	5,229	902	1,565	298	56	98	860	649	13	462	55		6,003	2,269	452	112				.299	.378	.434	.812
23	Red Sox	95-66	1986	.590	161	95	66	5,498	794	1,488	320	21	144	752	595	66	707	41	34	6,255	2,282	485	44	52	56	142	.271	.346	.415	.761
24	Red Sox	89-62	1939	.589	152	89	62	5,308	890	1,543	287	57	124	834	591	15	502	42		6,054	2,316	468	140			146	.291	.363	.436	.800
25	Red Sox	83-59	2013	.585	142	83	59	4,959	735	1,357	310	24	155	708	523	57	1,151	106	15	5,596	2,180	489	17	40	42	126	.274	.347	.440	.787