Nolan Ryan ERA in 1991

• 7th-best of Nolan Ryan's 27 seasons on file; the best is 1.69 in 1981.
• Down 0.53 from 3.44 in 1990.

Figures come from ESPN's box scores and were last read on September 22, 2026.

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Nolan Ryan ERA in 1991, season by season

Season↓	Team↓	GP↓iGP: Games the player appeared in, however briefly.	W↓iW: Games in which this pitcher was credited with the win.	L↓iL: Games in which this pitcher was charged with the loss.	ERA↓iERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.	IP↓iIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.	K↓iK: Batters this pitcher struck out.	BB↓iBB: Times the batter reached first base on four balls.	WHIP↓iWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.	SV↓iSV: Games finished by protecting a narrow lead to the last out.
1966	NYM	2	0	1	15.00	3.0	6	3	2.67	0
1968	NYM	21	6	9	3.09	134.0	133	75	1.25	0
1969	NYM	25	6	3	3.54	89.0	92	53	1.27	1
1970	NYM	27	7	11	3.41	132.0	125	97	1.39	1
1971	NYM	30	10	14	3.97	152.0	137	116	1.59	0
1972	LAA	39	19	16	2.28	284.0	329	157	1.14	0
1973	LAA	41	21	16	2.87	326.0	383	162	1.23	1
1974	LAA	42	22	16	2.89	333.0	367	202	1.27	0
1975	LAA	28	14	12	3.45	198.0	186	132	1.43	0
1976	LAA	39	17	18	3.36	284.0	327	183	1.32	0
1977	LAA	37	19	16	2.77	299.0	341	204	1.34	0
1978	LAA	31	10	13	3.71	235.0	260	148	1.41	0
1979	LAA	34	16	14	3.59	223.0	223	114	1.27	0
1980	HOU	35	11	10	3.35	234.0	200	98	1.29	0
1981	HOU	21	11	5	1.69	149.0	140	68	1.12	0
1982	HOU	35	16	12	3.16	250.1	245	109	1.22	0
1983	HOU	29	14	9	2.98	196.1	183	101	1.20	0
1984	HOU	30	12	11	3.04	183.2	197	69	1.15	0
1985	HOU	35	10	12	3.80	232.0	209	95	1.29	0
1986	HOU	30	12	8	3.34	178.0	194	82	1.13	0
1987	HOU	34	8	16	2.76	211.2	270	87	1.14	0
1988	HOU	33	12	11	3.52	220.0	228	87	1.24	0
1989	TEX	32	16	10	3.20	239.1	301	98	1.09	0
1990	TEX	30	13	9	3.44	204.0	232	74	1.03	0
1991	TEX	27	12	6	2.91	173.0	203	72	1.01	0
1992	TEX	27	5	9	3.72	157.1	157	69	1.32	0
1993	TEX	13	5	5	4.88	66.1	46	40	1.42	0

What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV