Bill Walker had the lowest ERA in the NL in 1929, with an ERA of 3.09.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the nl in 1929?

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Bill Walker B. Walker	3.09	1929	NYG	29	14	7	.667	23	65	13	1	0	177.2	188	61	71	11	57	4	4	768	0	3.29	2.89	1.14	0.56	8.5	7.4	1.38	.281	3.60	67	4.27	95	9.52	3.9
2	Burleigh Grimes B. Grimes	3.13	1929	PIT	33	17	7	.708	29	62	18	2	2	232.2	245	81	108	11	70	4	4	1,004	0	2.40	2.71	0.89	0.43	6.2	7.0	1.35	.273	4.18	66	4.20	91	9.48	10.7
3	Charlie Root C. Root	3.47	1929	CHC	43	19	6	.760	31	124	19	4	5	272.0	286	105	120	12	83	3	9	1,158	1	4.10	2.75	1.49	0.40	10.7	7.2	1.36	.293	3.97	74	3.77	84	9.46	22.5
4	Pat Malone P. Malone	3.57	1929	CHC	40	22	10	.688	30	166	19	5	2	267.0	283	106	120	12	102	6	7	1,152	6	5.60	3.44	1.63	0.40	14.4	8.9	1.44	.313	4.04	77	3.72	82	9.54	23.8
5	Red Lucas R. Lucas	3.60	1929	CIN	32	19	12	.613	32	72	28	2	0	270.0	267	108	119	14	58	1	0	1,124	1	2.40	1.93	1.24	0.47	6.4	5.2	1.20	.258	3.97	80	3.96	90	8.90	12.2
6	Syl Johnson S. Johnson	3.60	1929	SLN	42	13	7	.650	19	80	12	3	3	182.1	186	73	88	11	56	7	16	780	0	3.95	2.76	1.43	0.54	10.3	7.2	1.33	.280	4.34	76	4.11	89	9.18	10.3
7	Guy Bush G. Bush	3.66	1929	CHC	50	18	7	.720	30	82	18	2	8	270.2	277	110	135	16	107	4	15	1,176	7	2.73	3.56	0.77	0.53	7.0	9.1	1.42	.270	4.49	78	4.55	101	9.21	-1.4
8	Carl Hubbell C. Hubbell	3.69	1929	NYG	39	18	11	.621	35	106	19	1	1	268.0	273	110	128	17	67	6	3	1,130	5	3.56	2.25	1.58	0.57	9.4	5.9	1.27	.274	4.30	80	4.01	90	9.17	13.5
9	Jesse Petty J. Petty	3.71	1929	PIT	36	11	10	.524	25	58	12	1	0	184.1	197	76	100	12	42	0	5	783	1	2.83	2.05	1.38	0.59	7.4	5.4	1.30	.276	4.88	78	4.06	88	9.62	11.2
10	Watty Clark W. Clark	3.74	1929	BKN	41	16	19	.457	39	140	19	3	1	279.0	295	116	136	14	71	3	2	1,189	6	4.52	2.29	1.97	0.45	11.8	6.0	1.31	.292	4.39	80	3.61	80	9.52	28.3
11	Dazzy Vance D. Vance	3.89	1929	BKN	31	14	13	.519	27	126	17	1	0	231.1	244	100	110	15	47	9	3	978	3	4.90	1.83	2.68	0.58	12.9	4.8	1.26	.293	4.28	83	3.64	81	9.49	22.5
12	Hal Haid H. Haid	4.07	1929	SLN	38	9	9	.500	14	41	8	0	4	154.2	171	70	90	8	66	5	14	688	0	2.39	3.84	0.62	0.47	6.0	9.6	1.53	.287	5.24	86	4.68	102	9.95	-1.1
13	Freddie Fitzsimmons F. Fitzsimmons	4.10	1929	NYG	37	15	11	.577	30	55	14	4	1	221.2	242	101	122	14	66	2	4	950	4	2.23	2.68	0.83	0.57	5.8	6.9	1.39	.280	4.95	89	4.41	99	9.83	1.2
14	Larry Benton L. Benton	4.14	1929	NYG	39	12	17	.414	31	63	14	3	2	237.0	276	109	129	16	61	0	7	1,019	1	2.39	2.32	1.03	0.61	6.2	6.0	1.42	.296	4.90	90	4.28	96	10.48	4.7
15	Eppa Rixey E. Rixey	4.16	1929	CIN	35	10	13	.435	24	37	11	0	1	201.0	235	93	102	6	60	3	9	875	1	1.66	2.69	0.62	0.27	4.2	6.9	1.47	.298	4.57	92	4.12	94	10.52	5.3
16	Ray Kremer R. Kremer	4.26	1929	PIT	34	18	10	.643	27	66	14	0	0	221.2	226	105	114	21	60	1	5	930	3	2.68	2.44	1.10	0.85	7.1	6.5	1.29	.262	4.63	90	4.62	100	9.18	-0.2
17	Clarence Mitchell C. Mitchell	4.27	1929	SLN	25	8	11	.421	22	39	16	0	0	173.0	221	82	89	13	60	5	2	773	4	2.03	3.12	0.65	0.68	5.0	7.8	1.62	.317	4.63	90	4.82	104	11.50	-3.8
18	Sheriff Blake S. Blake	4.29	1929	CHC	35	14	13	.519	29	70	13	1	1	218.1	244	104	122	8	103	2	3	962	4	2.89	4.25	0.68	0.33	7.3	10.7	1.59	.303	5.03	92	4.44	98	10.06	1.7
19	Ben Cantwell B. Cantwell	4.47	1929	BSN	27	4	13	.235	20	25	8	0	2	157.0	171	78	98	11	52	2	5	683	3	1.43	2.98	0.48	0.63	3.7	7.6	1.42	.270	5.62	98	4.79	108	9.80	-6.9
20	Dolf Luque D. Luque	4.50	1929	CIN	32	5	16	.238	22	43	8	1	0	176.0	213	88	103	7	56	2	4	771	2	2.20	2.86	0.77	0.36	5.6	7.3	1.53	.311	5.27	100	4.18	95	10.89	3.5
21	Erv Brame E. Brame	4.55	1929	PIT	37	16	11	.593	28	68	19	1	0	229.2	250	116	123	17	71	0	5	994	4	2.66	2.78	0.96	0.67	6.8	7.1	1.40	.278	4.82	96	4.46	97	9.80	4
22	Jakie May J. May	4.61	1929	CIN	41	10	14	.417	24	92	10	0	3	199.0	219	102	111	7	75	5	13	875	2	4.16	3.39	1.23	0.32	10.5	8.6	1.48	.305	5.02	102	3.90	89	9.90	10.3
23	Percy Jones P. Jones	4.64	1929	BSN	35	7	15	.318	22	69	11	1	0	188.1	219	97	112	15	84	4	11	851	1	3.30	4.01	0.82	0.72	8.1	9.9	1.61	.300	5.35	101	4.87	110	10.47	-10
24	Bob Smith B. Smith	4.68	1929	BSN	34	11	17	.393	29	65	19	1	3	231.0	256	120	135	20	71	1	4	988	3	2.53	2.77	0.92	0.78	6.6	7.2	1.42	.284	5.26	102	4.66	105	9.97	-6.8
25	Socks Seibold S. Seibold	4.73	1929	BSN	33	12	17	.414	27	54	16	1	1	205.2	228	108	119	17	80	2	4	902	1	2.36	3.50	0.68	0.74	6.0	8.9	1.50	.282	5.21	103	4.91	111	9.98	-11.9