Wilbur Cooper career ERA

• Best season on file: 1.66 in 1912.
• Most recent: 5.77 in 1926.

Average of 15 regular seasons, 1912 through 1926. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Wilbur Cooper 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.
1912	PIT	6	3	0	1.66	38.0	30	15	1.24	0
1913	PIT	30	5	3	3.29	93.0	39	45	1.54	0
1914	PIT	40	16	15	2.13	266.2	102	79	1.22	0
1915	PIT	38	5	16	3.30	185.2	71	52	1.25	4
1916	PIT	42	12	11	1.87	246.0	111	74	1.07	2
1917	PIT	40	17	11	2.36	297.2	99	54	1.11	1
1918	PIT	38	19	14	2.11	273.1	117	65	1.04	3
1919	PIT	35	19	13	2.67	286.2	106	74	1.06	1
1920	PIT	44	24	15	2.39	327.0	114	52	1.10	2
1921	PIT	38	22	14	3.25	327.0	134	80	1.29	0
1922	PIT	41	23	14	3.18	294.2	129	61	1.33	0
1923	PIT	39	17	19	3.57	294.2	77	71	1.36	0
1924	PIT	38	20	14	3.28	268.2	62	40	1.25	1
1925	CHC	32	12	14	4.28	212.1	41	61	1.46	0
1926	CHC/DET	16	2	5	5.77	68.2	20	30	1.78	0

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