Ron Guidry career ERA

• Best season on file: 1.74 in 1978.
• Most recent: 4.18 in 1988.

Average of 14 regular seasons, 1975 through 1988. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Ron Guidry career ERA, 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.
1975	NYY	10	0	1	3.45	15.2	15	9	1.53	0
1976	NYY	7	0	0	5.63	16.0	12	4	1.50	0
1977	NYY	31	16	7	2.82	210.2	176	65	1.13	1
1978	NYY	35	25	3	1.74	273.2	248	72	0.95	0
1979	NYY	33	18	8	2.78	236.1	201	71	1.16	2
1980	NYY	37	17	10	3.56	219.2	166	80	1.34	1
1981	NYY	23	11	5	2.76	127.0	104	26	0.99	0
1982	NYY	34	14	8	3.81	222.0	162	69	1.28	0
1983	NYY	31	21	9	3.42	250.1	156	60	1.17	0
1984	NYY	29	10	11	4.51	195.2	127	44	1.36	0
1985	NYY	34	22	6	3.27	259.0	143	42	1.10	0
1986	NYY	30	9	12	3.98	192.1	140	38	1.25	0
1987	NYY	22	5	8	3.67	117.2	96	38	1.27	0
1988	NYY	12	2	3	4.18	56.0	32	15	1.29	0

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