lowest bb/9 by a league in a season

	LEAGUE	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	NL	0.64	1876	520	.500	257	257	520	2.31	589	472		13	4739.1	5,338	1,215	3,066	40	336		20,536	187	1.12	1.75	0.08	2.9	1.6	1.20		5.82	10.14
2	NL	0.79	1879	642	.500	316	316	642	2.50	1,843	609		2	5797.0	6,171	1,608	3,409	58	508		24,666	363	2.86	3.63	0.09	7.5	2.1	1.15		5.29	9.58
3	NL	0.96	1877	360	.500	177	177	360	2.81	726	326		4	3241.0	3,705	1,011	2,040	24	346		14,009	202	2.02	2.10	0.07	5.2	2.5	1.25		5.66	10.29
4	NL	0.99	1878	368	.500	180	180	368	2.30	1,081	352		1	3324.0	3,537	851	1,904	23	364		14,017	236	2.93	2.97	0.06	7.7	2.6	1.17		5.16	9.58
5	NL	1.10	1880	680	.500	332	332	680	2.37	1,989	608		13	6031.1	5,943	1,591	3,191	62	739		25,041	294	2.97	2.69	0.09	7.9	3.0	1.11		4.76	8.87
6	UA	1.38	1884	856	.500	422	422	856	3.04	4,830	759		8	7397.0	7,457	2,501	4,825	125	1,134		31,610	690	5.88	4.26	0.15	15.3	3.6	1.16		5.87	9.07
7	AA	1.38	1882	468	.500	233	233	468	2.68	1,185	438		1	4107.0	4,108	1,225	2,435	52	632		17,151	288	2.60	1.88	0.11	6.9	3.7	1.15		5.34	9.00
8	NL	1.43	1882	676	.500	334	334	676	2.88	2,156	642		1	6042.2	6,224	1,937	3,657	126	957		25,816	310	3.21	2.25	0.19	8.4	3.7	1.19		5.45	9.27
9	NL	1.45	1883	790	.500	390	390	790	3.13	2,877	717		11	6956.1	7,611	2,423	4,565	124	1,121		30,150	405	3.72	2.57	0.16	9.5	3.7	1.26		5.91	9.85
10	NL	1.56	1881	672	.500	334	334	672	2.77	1,784	631		3	5988.1	6,331	1,846	3,425	76	1,036		25,411	343	2.68	1.72	0.11	7.0	4.1	1.23		5.15	9.52
11	AA	1.56	1884	1,318	.500	640	640	1,318	3.24	5,672	1,263		3	11502.0	11,065	4,144	6,889	243	1,992		49,108	884	4.44	2.85	0.19	11.6	4.1	1.14	.266	5.39	8.66
12	AA	1.57	1883	780	.500	389	389	780	3.30	2,417	732		2	6919.1	7,217	2,535	4,465	114	1,208		29,893	381	3.14	2.00	0.15	8.1	4.0	1.22		5.81	9.39
13	AA	1.92	1885	890	.500	444	444	890	3.24	3,369	847		7	7917.1	7,789	2,854	4,885	149	1,685		33,639	673	3.83	2.00	0.17	10.0	5.0	1.20	.272	5.55	8.85
14	NL	1.97	1888	1,088	.500	532	532	1,088	2.83	4,000	1,045		6	9556.0	8,944	3,006	4,942	333	2,092	313	39,882	514	3.77	1.91	0.31	10.0	5.2	1.15	.260	4.65	8.42
15	NL	2.04	1884	914	.500	447	447	914	2.98	4,335	863		7	8046.0	8,070	2,662	5,026	321	1,821		34,690	609	4.85	2.38	0.36	12.5	5.2	1.23		5.62	9.03
16	AL	2.08	1903	1,108	.500	548	548	1,108	2.96	4,199	954	98	19	9784.0	9,553	3,220	4,544	184	2,266	341	40,063	195	3.86	1.85	0.17	10.5	5.7	1.21	.283	4.18	8.79
17	AL	2.12	1904	1,252	.500	608	608	1,252	2.60	5,026	1,097	142	9	11084.1	10,138	3,198	4,433	156	2,611	403	44,515	260	4.08	1.92	0.13	11.3	5.9	1.15	.275	3.60	8.23
18	NL	2.13	1885	890	.500	442	442	890	2.82	3,335	863		7	7803.0	7,519	2,442	4,407	174	1,844		32,968	539	3.85	1.81	0.20	10.1	5.6	1.20		5.08	8.67
19	NL	2.34	1919	1,116	.500	556	556	1,116	2.91	3,294	657	99	51	10064.2	9,603	3,253	4,071	207	2,612	257	41,360	183	2.95	1.26	0.19	8.0	6.3	1.21	.269	3.64	8.59
20	AL	2.34	1908	1,244	.500	612	612	1,244	2.39	4,930	841	129	46	11144.1	9,724	2,956	4,284	116	2,897	396	44,161	274	3.98	1.70	0.09	11.2	6.6	1.13	.268	3.46	7.85
21	AL	2.35	1906	1,226	.500	601	601	1,226	2.69	4,561	956	138	33	10864.1	10,001	3,247	4,500	137	2,835	383	43,606	244	3.78	1.61	0.11	10.5	6.5	1.18	.276	3.73	8.28
22	AL	2.36	1907	1,234	.500	599	599	1,234	2.54	4,479	893	128	53	11004.2	10,105	3,106	4,521	104	2,886	377	44,264	254	3.66	1.55	0.09	10.1	6.5	1.18	.275	3.70	8.26
23	NL	2.36	1921	1,226	.500	612	612	1,226	3.78	3,356	624	61	93	10982.2	12,245	4,612	5,631	460	2,882	249	46,969	181	2.75	1.16	0.38	7.1	6.1	1.38	.294	4.61	10.03
24	NL	2.37	1902	1,128	.500	549	549	1,128	2.78	3,912	1,000	100	21	9993.2	9,899	3,087	4,494	96	2,627	395	41,331	207	3.52	1.49	0.09	9.5	6.4	1.25	.286	4.05	8.91
25	NL	2.42	1916	1,244	.500	612	612	1,244	2.61	4,827	682	133	82	11222.1	10,141	3,258	4,288	239	3,016	313	45,744	245	3.87	1.60	0.19	10.6	6.6	1.17	.265	3.44	8.13