Jake Weimer career ERA

• Best season on file: 1.91 in 1904.
• Most recent: 9.00 in 1909.

Lowest of 7 regular seasons, 1903 through 1909. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Jake Weimer 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.
1903	CHC	35	20	8	2.30	282.0	128	104	1.22	0
1904	CHC	37	20	14	1.91	307.0	177	97	1.06	0
1905	CHC	33	18	12	2.26	250.1	107	80	1.17	1
1906	CIN	41	20	14	2.22	304.2	141	99	1.19	1
1907	CIN	29	11	14	2.41	209.0	67	63	1.09	0
1908	CIN	15	8	7	2.39	116.2	36	50	1.37	0
1909	SF	1	0	0	9.00	3.0	1	0	2.33	0

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