Scott Garrelts had the best ERA in the NL in 1989, with an ERA of 2.28.

Interpreted as:

whhich player had best era with a minimum of 1 IP per team game + in nl 1989

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Scott Garrelts S. Garrelts	2.28	1989	SFG	30	14	5	.737	29	119	2	1	0	193.1	149	49	58	11	46	0	0	3	766	7	5.54	2.14	2.59	0.51	15.5	6.0	1.01	.234	2.70	68	2.98	84	6.94	12.5
2	Orel Hershiser O. Hershiser	2.31	1989	LAD	35	15	15	.500	33	178	8	4	0	256.2	226	66	75	9	77	3	0	14	1,047	8	6.24	2.70	2.31	0.32	17.0	7.4	1.18	.278	2.63	68	2.76	78	7.92	22
3	Mark Langston M. Langston	2.39	1989	MON	24	12	9	.571	24	175	6	4	0	176.2	138	47	57	13	93	0	0	6	740	5	8.92	4.74	1.88	0.66	23.6	12.6	1.31	.272	2.90	69	3.31	93	7.03	4.9
4	Ed Whitson E. Whitson	2.66	1989	SDP	33	16	11	.593	33	117	5	1	0	227.0	198	67	77	22	48	5	0	6	914	2	4.64	1.90	2.44	0.87	12.8	5.3	1.08	.244	3.05	77	3.68	101	7.85	-1.2
5	Bruce Hurst B. Hurst	2.69	1989	SDP	33	15	11	.577	33	179	10	2	0	244.2	214	73	84	16	66	0	0	7	990	8	6.58	2.43	2.71	0.59	18.1	6.7	1.14	.272	3.09	78	2.95	81	7.87	18.4
6	Doug Drabek D. Drabek	2.80	1989	PIT	35	14	12	.538	34	123	8	5	0	244.1	215	76	83	21	69	3	1	3	994	3	4.53	2.54	1.78	0.77	12.4	6.9	1.16	.249	3.06	82	3.75	104	7.92	-4.2
7	John Smiley J. Smiley	2.81	1989	PIT	28	12	8	.600	28	123	8	1	0	205.1	174	64	78	22	49	4	0	5	835	5	5.39	2.15	2.51	0.96	14.7	5.9	1.09	.239	3.42	82	3.72	104	7.63	-2.9
8	Tim Belcher T. Belcher	2.82	1989	LAD	39	15	12	.556	30	200	10	8	1	230.0	182	72	81	20	80	7	6	5	937	7	7.83	3.13	2.50	0.78	21.3	8.5	1.14	.257	3.17	83	3.28	93	7.12	6.1
9	Sid Fernandez S. Fernandez	2.83	1989	NYM	35	14	5	.737	32	198	6	2	0	219.1	157	69	73	21	75	6	0	3	883	1	8.12	3.08	2.64	0.86	22.4	8.5	1.06	.233	3.00	84	3.30	94	6.44	5.3
10	Bryn Smith B. Smith	2.84	1989	MON	33	10	11	.476	32	129	3	1	0	215.2	177	68	76	16	54	4	0	4	864	3	5.38	2.25	2.39	0.67	14.9	6.3	1.07	.244	3.17	81	3.33	94	7.39	5.5
11	Jim Deshaies J. Deshaies	2.91	1989	HOU	34	15	10	.600	34	153	6	3	0	225.2	180	73	80	15	79	4	0	8	928	8	6.10	3.15	1.94	0.60	16.5	8.5	1.15	.244	3.19	87	3.37	100	7.18	-0.4
12	Joe Magrane J. Magrane	2.91	1989	STL	34	18	9	.667	33	127	9	3	0	234.2	219	76	81	5	72	6	1	7	971	14	4.87	2.76	1.76	0.19	13.1	7.4	1.24	.281	3.11	83	2.95	83	8.40	16
13	Rick Reuschel R. Reuschel	2.94	1989	SFG	32	17	8	.680	32	111	2	0	0	208.1	195	68	75	18	54	2	0	4	860	1	4.80	2.33	2.06	0.78	12.9	6.3	1.20	.262	3.24	88	3.62	102	8.42	-1.5
14	John Smoltz J. Smoltz	2.94	1989	ATL	29	12	11	.522	29	168	5	0	0	208.0	160	68	79	15	72	2	0	2	847	8	7.27	3.12	2.33	0.65	19.8	8.5	1.12	.246	3.42	79	3.14	84	6.92	13.6
15	Greg Maddux G. Maddux	2.95	1989	CHC	35	19	12	.613	35	135	7	1	0	238.1	222	78	90	13	82	6	0	13	1,002	5	5.10	3.10	1.65	0.49	13.5	8.2	1.28	.273	3.40	80	3.44	93	8.38	7.2
16	Jose DeLeon J. DeLeon	3.05	1989	STL	36	16	12	.571	36	201	5	3	0	244.2	173	83	96	16	80	6	0	5	972	2	7.39	2.94	2.51	0.59	20.7	8.2	1.03	.235	3.53	87	3.02	85	6.36	14.8
17	Mike Scott M. Scott	3.10	1989	HOU	33	20	10	.667	32	172	9	2	0	229.0	180	79	87	23	62	3	1	12	924	7	6.76	2.44	2.77	0.90	18.6	6.7	1.06	.236	3.42	93	3.41	101	7.07	-1.5
18	Mike Bielecki M. Bielecki	3.14	1989	CHC	33	18	7	.720	33	147	4	3	0	212.1	187	74	82	16	81	0	0	8	882	9	6.23	3.43	1.81	0.68	16.7	9.2	1.26	.268	3.48	85	3.49	94	7.93	5.1
19	Dennis Martinez D. Martinez	3.18	1989	MON	34	16	7	.696	33	142	5	2	0	232.0	227	82	88	21	49	7	1	4	950	5	5.51	1.90	2.90	0.81	14.9	5.2	1.19	.282	3.41	91	3.43	96	8.81	3.2
20	Pascual Perez P. Perez	3.31	1989	MON	33	9	13	.409	28	152	2	0	0	198.1	178	73	85	15	45	4	3	13	811	6	6.90	2.04	3.38	0.68	18.7	5.5	1.12	.274	3.86	95	2.95	83	8.08	13.6
21	Tom Browning T. Browning	3.39	1989	CIN	37	15	12	.556	37	118	9	2	0	249.2	241	94	109	31	64	3	0	10	1,031	2	4.25	2.31	1.84	1.12	11.4	6.2	1.22	.258	3.93	93	4.23	112	8.69	-11.4
22	Don Robinson D. Robinson	3.43	1989	SFG	34	12	11	.522	32	96	5	1	0	197.0	184	75	80	22	37	2	2	6	793	4	4.39	1.69	2.59	1.01	12.1	4.7	1.12	.255	3.65	102	3.83	107	8.41	-6
23	Fernando Valenzuela F. Valenzuela	3.43	1989	LAD	31	10	13	.435	31	116	3	0	0	196.2	185	75	89	11	98	2	0	6	852	6	5.31	4.48	1.18	0.50	13.6	11.5	1.44	.278	4.07	101	3.83	109	8.47	-7
24	Ken Howell K. Howell	3.44	1989	PHI	33	12	12	.500	32	164	1	1	0	204.0	155	78	84	11	86	2	0	6	827	21	7.24	3.79	1.91	0.49	19.8	10.4	1.18	.255	3.71	97	3.14	87	6.84	11.1
25	Bob Ojeda B. Ojeda	3.47	1989	NYM	31	13	11	.542	31	95	5	2	0	192.0	179	74	83	16	78	2	0	5	824	0	4.45	3.66	1.22	0.75	11.5	9.5	1.34	.258	3.89	102	4.10	116	8.39	-12.7