Roger Clemens had the lowest ERA in the AL in 1991, with an ERA of 2.62.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the al in 1991?

	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	Roger Clemens R. Clemens	2.62	1991	BOS	35	18	10	.643	35	241	13	4	0	271.1	219	79	93	15	65	5	0	12	1,077	6	7.99	2.16	3.71	0.50	22.4	6.0	1.05	.272	3.08	61	2.57	63	7.26	44.5
2	Tom Candiotti T. Candiotti	2.65	1991	TOT	34	13	13	.500	34	167	6	0	0	238.0	202	70	82	12	73	6	0	1	981	11	6.32	2.76	2.29	0.45	17.0	7.4	1.16	.263	3.10	64	3.10	76	7.64	26.2
3	Bill Wegman B. Wegman	2.84	1991	MIL	28	15	7	.682	28	89	7	2	0	193.1	176	61	76	16	40	7	0	0	785	6	4.14	1.86	2.23	0.74	11.3	5.1	1.12	.253	3.54	71	3.73	94	8.19	4.8
4	Jim Abbott J. Abbott	2.89	1991	CAL	34	18	11	.621	34	158	5	1	0	243.0	222	78	85	14	73	5	0	6	1,002	1	5.85	2.70	2.16	0.52	15.8	7.3	1.21	.277	3.15	71	3.26	79	8.22	23
5	Nolan Ryan N. Ryan	2.91	1991	TEX	27	12	6	.667	27	203	2	2	0	173.0	102	56	58	12	72	5	0	0	683	8	10.56	3.75	2.82	0.62	29.7	10.5	1.01	.230	3.02	72	2.74	68	5.31	24.4
6	Mike Moore M. Moore	2.96	1991	OAK	33	17	8	.680	33	153	3	1	0	210.0	176	69	75	11	105	5	0	1	887	14	6.56	4.50	1.46	0.47	17.2	11.8	1.34	.269	3.21	76	3.65	92	7.54	7.3
7	Kevin Tapani K. Tapani	2.99	1991	MIN	34	16	9	.640	34	135	4	1	0	244.0	225	81	84	23	40	2	0	0	974	3	4.98	1.48	3.38	0.85	13.9	4.1	1.09	.261	3.10	70	3.49	87	8.30	14
8	Mark Langston M. Langston	3.00	1991	CAL	34	19	8	.704	34	183	7	0	0	246.1	190	82	89	30	96	2	0	3	992	6	6.69	3.51	1.91	1.10	18.4	9.7	1.16	.235	3.25	73	4.14	100	6.94	-0.3
9	Jimmy Key J. Key	3.05	1991	TOR	33	16	12	.571	33	125	2	2	0	209.1	207	71	84	12	44	3	0	3	877	1	5.37	1.89	2.84	0.52	14.3	5.0	1.20	.281	3.61	74	3.07	74	8.90	24.9
10	Bret Saberhagen B. Saberhagen	3.07	1991	KCR	28	13	8	.619	28	136	7	2	0	196.1	165	67	76	12	45	9	0	5	789	8	6.23	2.06	3.02	0.55	17.2	5.7	1.07	.261	3.48	75	3.08	79	7.56	17.7
11	Jose Guzman J. Guzman	3.08	1991	TEX	25	13	7	.650	25	125	5	1	0	169.2	152	58	67	10	84	4	0	1	730	8	6.63	4.46	1.49	0.53	17.1	11.5	1.39	.280	3.55	76	3.70	92	8.06	5.7
12	Scott Erickson S. Erickson	3.18	1991	MIN	32	20	8	.714	32	108	5	3	0	204.0	189	72	80	13	71	6	0	3	851	4	4.76	3.13	1.52	0.57	12.7	8.3	1.27	.270	3.53	75	3.75	94	8.34	5.6
13	Chris Bosio C. Bosio	3.25	1991	MIL	32	14	10	.583	32	117	5	1	0	204.2	187	74	80	15	58	8	0	0	840	5	5.14	2.55	2.02	0.66	13.9	6.9	1.20	.268	3.52	81	3.63	92	8.22	7.6
14	Jack McDowell J. McDowell	3.41	1991	CWS	35	17	10	.630	35	191	15	3	0	253.2	212	96	97	19	82	4	0	2	1,028	10	6.78	2.91	2.33	0.67	18.6	8.0	1.16	.264	3.44	86	3.33	83	7.52	18.9
15	Kevin Appier K. Appier	3.42	1991	KCR	34	13	10	.565	31	158	6	3	0	207.2	205	79	97	13	61	2	1	3	881	7	6.85	2.64	2.59	0.56	17.9	6.9	1.28	.297	4.20	84	3.05	79	8.88	19.5
16	Jack Morris J. Morris	3.43	1991	MIN	35	18	12	.600	35	163	10	2	0	246.2	226	94	107	18	92	5	0	5	1,032	15	5.95	3.36	1.77	0.66	15.8	8.9	1.29	.276	3.90	81	3.66	91	8.25	9.4
17	Greg Swindell G. Swindell	3.48	1991	CLE	33	9	16	.360	33	169	7	0	0	238.0	241	92	112	21	31	3	0	1	971	3	6.39	1.17	5.45	0.79	17.4	3.2	1.14	.295	4.24	85	3.01	75	9.11	26.5
18	Bill Krueger B. Krueger	3.60	1991	SEA	35	11	8	.579	25	91	1	0	0	175.0	194	70	82	15	60	4	2	4	751	10	4.68	3.09	1.52	0.77	12.1	8.0	1.45	.308	4.22	87	4.02	99	9.98	0.4
19	Brian Holman B. Holman	3.69	1991	SEA	30	13	14	.481	30	108	5	3	0	195.1	199	80	86	16	77	10	0	0	839	8	4.98	3.55	1.40	0.74	12.9	9.2	1.41	.291	3.96	89	4.15	103	9.17	-2.2
20	David Wells D. Wells	3.72	1991	TOR	40	15	10	.600	28	106	2	0	1	198.1	188	82	88	24	49	2	3	1	811	10	4.81	2.22	2.16	1.09	13.1	6.0	1.19	.260	3.99	90	4.13	99	8.53	1.1
21	Frank Tanana F. Tanana	3.77	1991	DET	33	13	12	.520	33	107	3	2	0	217.1	217	91	98	26	78	2	0	9	920	3	4.43	3.23	1.37	1.08	11.6	8.5	1.36	.270	4.06	91	4.52	109	8.99	-8.2
22	Todd Stottlemyre T. Stottlemyre	3.78	1991	TOR	34	15	8	.652	34	116	1	0	0	219.0	194	92	97	21	75	12	0	3	921	4	4.77	3.08	1.55	0.86	12.6	8.1	1.23	.248	3.99	91	4.23	102	7.97	-1.2
23	Chuck Finley C. Finley	3.80	1991	CAL	34	18	9	.667	34	171	4	2	0	227.1	205	96	102	23	101	8	0	1	955	6	6.77	4.00	1.69	0.91	17.9	10.6	1.35	.279	4.04	93	4.10	99	8.12	0.8
24	Scott Sanderson S. Sanderson	3.81	1991	NYY	34	16	10	.615	34	130	2	2	0	208.0	200	88	95	22	29	3	0	0	837	4	5.63	1.25	4.48	0.95	15.5	3.5	1.10	.273	4.11	93	3.44	83	8.65	15.7
25	Erik Hanson E. Hanson	3.81	1991	SEA	27	8	8	.500	27	143	2	1	0	174.2	182	74	82	16	56	2	0	2	744	14	7.37	2.89	2.55	0.82	19.2	7.5	1.36	.315	4.23	92	3.40	84	9.38	12.5