Juan Marichal career ERA

• Best season on file: 2.10 in 1969.
• Most recent: 13.50 in 1975.

Figures come from ESPN's box scores and were last read on September 21, 2026.

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Juan Marichal 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.
1960	SF	11	6	2	2.66	81.1	58	28	1.07	0
1961	SF	29	13	10	3.89	185.0	124	48	1.25	0
1962	SF	37	18	11	3.36	262.2	153	90	1.23	1
1963	SF	41	25	8	2.41	321.1	248	61	1.00	0
1964	SF	33	21	8	2.48	269.0	206	52	1.09	0
1965	SF	39	22	13	2.13	295.1	240	46	0.91	1
1966	SF	37	25	6	2.23	307.1	222	36	0.86	0
1967	SF	26	14	10	2.76	202.1	166	42	1.17	0
1968	SF	38	26	9	2.43	326.0	218	46	1.05	0
1969	SF	37	21	11	2.10	299.2	205	54	0.99	0
1970	SF	34	12	10	4.12	242.2	123	48	1.31	0
1971	SF	37	18	11	2.94	279.0	159	56	1.08	0
1972	SF	25	6	16	3.71	165.0	72	46	1.35	0
1973	SF	34	11	15	3.82	207.1	87	37	1.29	0
1974	BOS	11	5	1	4.87	57.1	21	14	1.31	0
1975	LAD	2	0	1	13.50	6.0	1	5	2.67	0

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