Lefty Leifield career ERA

• Best season on file: 1.87 in 1906.
• Most recent: 7.00 in 1920.

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

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Lefty Leifield 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.
1905	PIT	8	5	2	2.89	56.0	10	14	1.18	0
1906	PIT	37	18	13	1.87	255.2	111	68	1.10	1
1907	PIT	40	20	16	2.33	286.0	112	100	1.29	1
1908	PIT	34	15	14	2.10	218.2	87	86	1.16	2
1909	PIT	32	19	8	2.37	201.2	43	54	1.12	0
1910	PIT	40	15	13	2.64	218.1	64	67	1.21	2
1911	PIT	42	16	16	2.63	318.0	111	82	1.20	1
1912	PIT/CHC	19	8	4	2.86	94.1	31	31	1.36	0
1913	CHC	6	0	1	5.48	21.1	4	5	1.55	0
1918	BAL	15	2	6	2.55	67.0	22	19	1.19	0
1919	BAL	19	6	4	2.93	92.0	18	25	1.32	0
1920	BAL	4	0	0	7.00	9.0	3	3	2.22	0

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