Mark Baldwin career ERA

• Best season on file: 2.76 in 1888.
• Most recent: 4.15 in 1893.

Average of 7 regular seasons, 1887 through 1893. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Mark Baldwin 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.
1887	CHC	40	18	17	3.40	334.0	164	122	1.35	1
1888	CHC	30	13	15	2.76	251.0	157	99	1.35	0
1889	—	63	27	34	3.61	513.2	368	274	1.43	1
1890	—	59	34	24	3.31	501.0	211	249	1.49	0
1891	PIT	53	22	28	2.76	437.2	197	227	1.40	0
1892	PIT	56	26	27	3.47	440.1	157	194	1.46	0
1893	PIT/SF	46	16	20	4.15	333.2	100	142	1.45	2

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