Walter Johnson career ERA

• Best season on file: 1.14 in 1913.
• Most recent: 5.10 in 1927.

Average of 21 regular seasons, 1907 through 1927. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Walter Johnson 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.
1907	MIN	14	5	9	1.88	110.1	71	20	1.09	0
1908	MIN	36	14	14	1.65	256.1	160	53	0.96	1
1909	MIN	40	13	25	2.22	296.1	164	84	1.12	1
1910	MIN	45	25	17	1.36	370.0	313	76	0.91	1
1911	MIN	40	25	13	1.90	322.1	207	70	1.12	1
1912	MIN	50	33	12	1.39	369.0	303	76	0.91	2
1913	MIN	48	36	7	1.14	346.0	243	38	0.78	2
1914	MIN	51	28	18	1.72	371.2	225	74	0.97	1
1915	MIN	47	27	13	1.55	336.2	203	56	0.93	4
1916	MIN	48	25	20	1.90	369.2	228	82	1.01	1
1917	MIN	47	23	16	2.21	326.0	188	68	0.97	3
1918	MIN	39	23	13	1.27	326.0	162	70	0.95	3
1919	MIN	39	20	14	1.49	290.1	147	51	0.99	2
1920	MIN	21	8	10	3.13	143.2	78	27	1.13	3
1921	MIN	35	17	14	3.51	264.0	143	92	1.35	1
1922	MIN	41	15	16	2.99	280.0	105	99	1.36	4
1923	MIN	42	17	12	3.48	261.1	130	73	1.29	4
1924	MIN	38	23	7	2.72	277.2	158	77	1.12	0
1925	MIN	30	20	7	3.07	229.0	108	78	1.29	0
1926	MIN	33	15	16	3.63	260.2	125	73	1.27	0
1927	MIN	18	5	6	5.10	107.2	48	26	1.29	0

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