Carl Mays career ERA

• Best season on file: 1.74 in 1917.
• Most recent: 4.32 in 1929.

Average of 15 regular seasons, 1915 through 1929. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Carl Mays 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.
1915	BOS	38	6	5	2.60	131.2	65	21	1.06	7
1916	BOS	44	18	13	2.39	245.0	76	74	1.15	3
1917	BOS	35	22	9	1.74	289.0	91	74	1.05	0
1918	BOS	35	21	13	2.21	293.1	114	81	1.06	0
1919	BOS/NYY	34	14	14	2.10	266.0	107	77	1.14	2
1920	NYY	45	26	11	3.06	312.0	92	84	1.26	2
1921	NYY	49	27	9	3.05	336.2	70	76	1.21	7
1922	NYY	34	12	14	3.60	240.0	41	50	1.28	2
1923	NYY	23	5	2	6.20	81.1	16	32	1.86	0
1924	CIN	37	20	9	3.15	226.0	63	36	1.21	0
1925	CIN	12	3	5	3.31	51.2	10	13	1.41	2
1926	CIN	39	19	12	3.14	281.0	58	53	1.21	1
1927	CIN	14	3	7	3.51	82.0	17	10	1.21	0
1928	CIN	14	4	1	3.88	62.2	10	22	1.42	1
1929	SF	37	7	2	4.32	123.0	32	31	1.39	4

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