Win Mercer career ERA

• Best season on file: 3.04 in 1902.

Average of 9 regular seasons, 1894 through 1902. Figures come from ESPN's box scores and were last read on September 23, 2026.

CopyCSV

Win Mercer 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.
1894	—	50	17	23	3.85	336.1	72	126	1.69	3
1895	—	43	13	23	4.46	311.0	84	96	1.69	2
1896	—	46	25	18	4.13	366.1	94	117	1.56	0
1897	—	46	20	20	3.24	333.0	88	103	1.50	3
1898	—	33	12	18	4.81	233.2	52	71	1.63	0
1899	—	23	7	14	4.60	186.0	28	53	1.54	0
1900	SF	33	13	17	3.86	242.2	39	58	1.49	0
1901	MIN	24	9	13	4.56	179.2	31	50	1.49	1
1902	DET	35	15	18	3.04	281.2	40	80	1.29	1

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