most games with exactly 1 runs allowed by a team in a season

The Boston Red Sox have the most games pitched by a team with exactly 1 run allowed in a season, with 39 games in 1917.

	TEAM	G	R	SEASON	W%	W	L	ERA	SO	SHO	SV	IP	H	ER	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Red Sox	39	39	1917	.833	30	6	0.00	127	0	1	358.0	229	0	1	90	7		1,357	1	3.19	2.26	1.41	0.03	9.4	6.6	0.89	.201	0.98	5.76
2	Giants	38	38	1904	.944	34	2	0.00	173	0	4	348.0	216	0	3	88	6		1,335	4	4.47	2.28	1.97	0.08	13.0	6.6	0.87	.200	0.98	5.59
3	Giants	37	37	1917	.917	33	3	0.00	121	0	3	338.2	220	0	3	74	4		1,281	3	3.22	1.97	1.64	0.08	9.4	5.8	0.87	.201	0.98	5.85
4	Cubs	37	37	1906	.889	32	4	0.00	173	0	0	330.0	201	0	2	77	11		1,228	3	4.72	2.10	2.25	0.05	14.1	6.3	0.84	.206	1.01	5.48
5	Phillies	36	36	1976	.889	32	4	0.94	182	0	10	315.2	221	33	10	57	3	1	1,186	2	5.19	1.63	3.19	0.29	15.3	4.8	0.88	.226	1.03	6.30
6	Athletics	36	36	1910	.941	32	2	0.00	206	0	1	343.1	192	0	0	99	11		1,281	8	5.40	2.60	2.08	0.00	16.1	7.7	0.85	.199	0.94	5.03
7	Dodgers	35	35	2022	.971	34	1	0.92	295	0	11	314.0	168	32	10	85	9	0	1,179	5	8.46	2.44	3.47	0.29	25.0	7.2	0.81	.203	1.00	4.82
8	Dodgers	35	35	1976	.800	28	7	0.87	166	0	10	330.1	234	32	11	87	2	2	1,273	8	4.52	2.37	1.91	0.30	13.0	6.8	0.97	.221	0.95	6.38
9	White Sox	35	35	1964	.886	31	4	0.89	202	0	13	323.0	187	32	7	78	5	7	1,203	13	5.63	2.17	2.59	0.20	16.8	6.5	0.82	.198	0.98	5.21
10	Cubs	35	35	1963	.857	30	5	0.79	181	0	12	319.0	220	28	10	72	5	5	1,223	5	5.11	2.03	2.51	0.28	14.8	5.9	0.92	.220	0.99	6.21
11	Highlanders	35	35	1904	.875	28	4	0.00	140	0	0	311.0	203	0	3	48	5		1,165	9	4.05	1.39	2.92	0.09	12.0	4.1	0.81	.206	1.01	5.87
12	Cardinals	34	34	2015	.941	32	2	0.90	280	0	21	310.0	218	31	13	77	7	6	1,201	11	8.13	2.24	3.64	0.38	23.3	6.4	0.95	.249	0.99	6.33
13	Yankees	34	34	1968	.912	31	3	0.83	154	0	8	303.0	199	28	11	53	7	5	1,144	2	4.57	1.57	2.91	0.33	13.5	4.6	0.83	.205	1.01	5.91
14	Pirates	34	34	1914	.677	21	10	0.00	101	0	1	312.1	199	0	1	59	3		1,158	2	2.91	1.70	1.71	0.03	8.7	5.1	0.83	.199	0.98	5.73
15	Tigers	34	34	1909	.970	32	1	0.00	125	0	2	317.0	205	0	1	81	12		1,215	5	3.55	2.30	1.54	0.03	10.3	6.7	0.90	.205	0.97	5.82
16	Athletics	34	34	1909	.794	27	7	0.00	168	0	0	316.1	211	0	1	64	16		1,194	5	4.78	1.82	2.63	0.03	14.1	5.4	0.87	.222	0.97	6.00
17	White Sox	34	34	1908	.818	27	6	0.00	159	0	0	315.2	177	0	1	65	8		1,176	4	4.53	1.85	2.45	0.03	13.5	5.5	0.77	.187	0.97	5.05
18	Red Sox	34	34	1908	.824	28	6	0.00	164	0	0	309.0	187	0	3	47	3		1,143	5	4.78	1.37	3.49	0.09	14.3	4.1	0.76	.199	0.99	5.45
19	Cubs	34	34	1907	.824	28	6	0.00	147	0	1	304.1	183	0	2	63	5		1,124	2	4.35	1.86	2.33	0.06	13.1	5.6	0.81	.200	1.01	5.41
20	Naps	34	34	1904	.818	27	6	0.00	154	0	0	308.1	227	0	0	55	9			7	4.50	1.61	2.80	0.00		4.8	0.91	.243	0.99	6.63
21	Indians	33	33	1968	.818	27	6	0.80	238	0	10	305.0	175	27	12	96	16	12	1,185	8	7.02	2.83	2.48	0.35	20.1	8.1	0.89	.198	0.97	5.16
22	Cardinals	33	33	1946	.909	30	3	0.00	144	0	2	295.2	205	0	5	72	1		1,124	1	4.38	2.19	2.00	0.15	12.8	6.4	0.94	.222	1.00	6.24
23	Tigers	32	32	1968	.969	31	1	0.80	213	0	9	293.0	179	26	10	76	7	6	1,117	5	6.54	2.33	2.80	0.31	19.1	6.8	0.87	.208	0.98	5.50
24	Braves	32	32	1968	.906	29	3	0.70	195	0	8	296.0	178	23	7	65	4	9	1,117	4	5.93	1.98	3.00	0.21	17.5	5.8	0.82	.202	0.97	5.41
25	Phillies	32	32	1908	.719	23	9	0.00	111	0	1	288.2	192	0	0	46	7		1,072	2	3.46	1.43	2.41	0.00	10.4	4.3	0.82	.211	1.00	5.99