mlb worst bb/9 by a team in a season since 1901

Since 1901, the Boston Americans have walked the lowest walks per nine innings by a team in a season, with 1.49 BB/9 in 1904.

	TEAM	BB/9	SEASON	G	W%	W	L	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	TBF	WP	K/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Americans	1.49	1904	157	.617	95	59	157	2.12	612	148	21	1	1406.0	1,208	331	466	31	233	29	5,448	22	3.92	2.63	0.20	11.2	4.3	1.02	.259	2.98	7.73
2	White Sox	1.67	1906	154	.616	93	58	154	2.13	543	117	32	4	1375.1	1,212	326	460	11	255	32	5,345	33	3.55	2.13	0.07	10.2	4.8	1.07	.267	3.01	7.93
3	Reds	1.71	1933	153	.382	58	94	153	3.42	310	74	13	8	1352.0	1,470	514	643	47	257	14	5,666	24	2.06	1.21	0.31	5.5	4.5	1.28	.282	4.28	9.79
4	Browns	1.75	1903	139	.468	65	74	139	2.77	511	124	12	3	1222.1	1,220	376	525	26	237	36	4,979	22	3.76	2.16	0.19	10.3	4.8	1.19	.286	3.87	8.98
5	Pirates	1.76	1901	140	.647	90	49	140	2.58	505	119	15	4	1244.2	1,198	357	534	20	244	60	5,071	21	3.65	2.07	0.14	10.0	4.8	1.16	.278	3.86	8.66
6	Pirates	1.78	1902	142	.741	103	36	142	2.30	564	131	21	3	1264.2	1,142	323	440	4	250	61	5,048	19	4.01	2.26	0.03	11.2	5.0	1.10	.273	3.13	8.13
7	Pirates	1.78	1920	155	.513	79	75	155	2.89	444	92	17	10	1415.1	1,389	454	552	25	280	27	5,797	27	2.82	1.59	0.16	7.7	4.8	1.18	.272	3.51	8.83
8	Reds	1.78	1932	155	.390	60	94	155	3.79	359	83	6	5	1394.2	1,505	587	715	69	276	20	5,889	15	2.32	1.30	0.45	6.1	4.7	1.28	.278	4.61	9.71
9	White Sox	1.81	1908	156	.579	88	64	156	2.22	623	107	21	10	1414.0	1,165	349	470	11	284	28	5,501	30	3.97	2.19	0.07	11.3	5.2	1.02	.253	2.99	7.42
10	Highlanders	1.84	1903	136	.537	72	62	136	3.08	463	111	7	2	1201.1	1,171	411	573	19	245	41	4,882	22	3.47	1.89	0.14	9.5	5.0	1.18	.280	4.29	8.77
11	Giants	1.84	1908	157	.636	98	56	157	2.14	656	95	24	18	1411.0	1,210	336	455	26	288	35	5,544	18	4.18	2.28	0.17	11.8	5.2	1.06	.261	2.90	7.72
12	Giants	1.85	1918	124	.573	71	53	124	2.64	330	74	17	11	1111.2	1,002	326	415	20	228	23	4,493	20	2.67	1.45	0.16	7.3	5.1	1.11	.252	3.36	8.11
13	Americans	1.86	1906	155	.318	49	105	155	3.41	549	124	6	6	1382.0	1,360	524	711	37	285	42	5,553	26	3.58	1.93	0.24	9.9	5.1	1.19	.285	4.63	8.86
14	Phillies	1.87	1901	140	.593	83	57	140	2.87	480	125	14	2	1246.2	1,221	397	543	19	259	48	5,101	24	3.47	1.85	0.14	9.4	5.1	1.19	.280	3.92	8.81
15	Naps	1.89	1904	154	.570	86	65	154	2.22	627	141	20	0	1356.2	1,273	335	482	10	285	36	5,432	36	4.16	2.20	0.07	11.5	5.2	1.15	.282	3.20	8.44
16	Pirates	1.90	1919	139	.511	71	68	139	2.88	391	91	15	4	1249.0	1,113	400	466	23	263	36	5,030	18	2.82	1.49	0.17	7.8	5.2	1.10	.252	3.36	8.02
17	Giants	1.90	1920	155	.558	86	68	155	2.80	380	87	17	9	1408.2	1,379	439	543	44	297	19	5,762	23	2.43	1.28	0.28	6.6	5.2	1.19	.266	3.47	8.81
18	Reds	1.91	1924	153	.542	83	70	153	3.12	451	77	14	9	1378.0	1,408	477	579	30	293	28	5,736	15	2.95	1.54	0.20	7.9	5.1	1.23	.279	3.78	9.20
19	Phillies	1.92	1916	154	.595	91	62	154	2.36	601	97	25	9	1382.2	1,238	362	489	28	295	45	5,569	34	3.91	2.04	0.18	10.8	5.3	1.11	.263	3.18	8.06
20	Americans	1.93	1903	141	.659	91	47	141	2.57	579	123	20	4	1255.0	1,142	358	505	23	269	36	5,027	18	4.15	2.15	0.16	11.5	5.4	1.12	.272	3.62	8.19
21	Giants	1.93	1921	153	.614	94	59	153	3.55	357	72	8	18	1372.1	1,497	542	636	79	295	15	5,734	21	2.34	1.21	0.52	6.2	5.1	1.31	.284	4.17	9.82
22	Americans	1.94	1905	153	.513	78	74	153	2.84	652	124	14	1	1356.1	1,198	428	564	33	292	43	5,352	25	4.33	2.23	0.22	12.2	5.5	1.10	.269	3.74	7.95
23	White Sox	1.95	1907	157	.576	87	64	157	2.22	604	112	16	9	1406.1	1,279	347	475	13	305	22	5,555	31	3.87	1.98	0.08	10.9	5.5	1.13	.275	3.04	8.19
24	Orphans	1.96	1902	143	.496	68	69	143	2.19	447	134	17	2	1293.1	1,244	315	505	7	281	48	5,249	27	3.11	1.59	0.05	8.5	5.4	1.18	.277	3.51	8.66
25	Naps	1.96	1903	140	.550	77	63	140	2.73	521	125	20	0	1243.2	1,161	377	579	16	271	35	5,014	27	3.77	1.92	0.12	10.4	5.4	1.15	.275	4.19	8.40