John Curtis career ERA

• Best season on file: 3.12 in 1971.
• Most recent: 4.40 in 1984.

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

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John Curtis 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.
1970	BOS	1	0	0	11.57	2.1	1	1	2.14	0
1971	BOS	5	2	2	3.12	26.0	19	6	1.38	0
1972	BOS	26	11	8	3.73	154.1	106	50	1.37	0
1973	BOS	35	13	13	3.58	221.1	101	83	1.39	0
1974	STL	33	10	14	3.78	195.0	89	83	1.45	1
1975	STL	39	8	9	3.44	146.2	67	65	1.47	1
1976	STL	37	6	11	4.50	134.0	52	65	1.52	1
1977	SF	43	3	3	5.49	77.0	47	48	1.86	1
1978	SF	46	4	3	3.71	63.0	38	29	1.41	1
1979	SF	27	10	9	4.18	120.2	85	42	1.35	0
1980	SD	30	10	8	3.51	187.0	71	67	1.34	0
1981	SD	28	2	6	5.13	66.2	31	30	1.50	0
1982	SD/LAA	34	8	7	4.28	128.1	64	49	1.45	1
1983	LAA	37	1	2	3.80	90.0	36	40	1.43	5
1984	LAA	17	1	2	4.40	28.2	18	11	1.43	0

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