The Pittsburgh Rebels have the best winning percentage by a team with exactly 4 runs in a season, winning 95.5 percent of the time in 1915.

	TEAM	W%	R	SEASON	W	L	G	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Rebels	.955	92	1915	21	1	23	713	206	30	16	5	83	58	3	84	33		814	283	51	40				.289	.345	.397	.742
2	Giants	.952	88	1908	20	1	22	688	190	26	5	4	79	71	18	63	20		818	238	35	41				.276	.359	.346	.705
3	Yankees	.933	60	1943	14	1	15	496	130	15	6	10	53	72	3	60	4		581	187	31	10			20	.262	.359	.377	.736
4	Phillies	.929	56	1976	13	1	14	453	115	21	5	7	48	49	1	61	17	9	514	167	33	6	5	8	8	.254	.325	.369	.693
5	Cardinals	.923	56	1943	12	1	14	509	137	26	5	5	53	32	2	45	2		562	188	36	19			5	.269	.315	.369	.684
6	Pirates	.923	56	1926	12	1	14	448	128	23	13	4	53	37	3	36	7		508	189	40	20				.286	.344	.422	.766
7	Cubs	.917	48	1928	11	1	12	381	102	19	2	6	43	43	1	38	7		437	143	27	12				.268	.344	.375	.719
8	Phillies	.917	48	1908	11	1	12	374	98	24	4	2	38	33	5		22		404	136	30	25				.262	.330	.364	.694
9	Reds	.913	92	1919	21	2	23	752	204	21	11	9	82	70	7	68	36		860	274	41	31				.271	.339	.364	.703
10	Braves	.909	48	1933	10	1	12	404	111	21	0	9	47	32	3	25	2		454	159	30	15				.275	.333	.394	.726
11	Tigers	.895	80	1908	17	2	20	630	162	20	8	3	65	44	10		25		712	207	31	28				.257	.316	.329	.644
12	Giants	.895	80	1907	17	2	20	637	163	21	9	5		71	12		22		742	217	35	22				.256	.342	.341	.682
13	Senators	.889	72	1912	16	2	18	563	134	20	11	3	60	47	4	91	30		638	185	34	24				.238	.301	.329	.630
14	Indians	.882	68	1919	15	2	17	537	154	25	7	3		63	5	48	11		640	202	35	35				.287	.367	.376	.743
15	White Sox	.870	92	1906	20	3	23	724	167	22	8	2		69	8		33		845	211	32	44				.231	.305	.291	.596
16	Cardinals	.867	60	1952	13	2	15	508	128	17	12	9	55	65	4	49	6	5	587	196	38	10			6	.252	.341	.386	.727
17	Naps	.867	60	1908	13	2	15	498	124	14	8	1		37	0		18		485	157	23	26				.249	.301	.315	.616
18	Phillies	.864	88	1949	19	3	22	792	202	35	9	11	80	60	4	79	4		870	288	55	14			9	.255	.311	.364	.674
19	Dodgers	.864	88	1942	19	3	22	710	181	25	3	7	80	79	3	61	22		810	233	35	18			19	.255	.332	.328	.660
20	Padres	.857	84	2014	18	3	21	685	164	33	3	14	78	68	8	155	21	4	780	245	50	11	8	3	13	.239	.312	.358	.670
21	Dodgers	.852	108	1966	23	4	27	938	248	31	3	15	104	86	6	120	15	13	1,048	330	49	16	2	13	18	.264	.329	.352	.681
22	Cardinals	.850	80	1944	17	3	20	685	184	35	4	12	76	58	3	51	4		761	263	51	15			17	.269	.328	.384	.712
23	Cardinals	.846	52	1969	11	2	13	453	126	24	2	8	51	43	2	83	4	4	506	178	34	6	2	7	11	.278	.342	.393	.735
24	Giants	.846	56	1913	11	2	14	478	133	26	9	1	49	39	4	38	22		539	180	36	18				.278	.338	.377	.714
25	Giants	.846	60	1909	11	2	15	485	123	16	7	4		63	5		22		573	165	27	20				.254	.345	.340	.686