Bob Groom career ERA

• Best season on file: 2.57 in 1916.
• Most recent: 7.06 in 1918.

Average of 10 regular seasons, 1909 through 1918. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Bob Groom 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.
1909	MIN	44	7	26	2.87	260.2	131	105	1.24	0
1910	MIN	34	12	17	2.76	257.2	98	77	1.25	0
1911	MIN	37	13	17	3.82	254.2	135	67	1.36	2
1912	MIN	43	24	13	2.62	316.0	179	94	1.21	1
1913	MIN	37	16	16	3.23	264.1	156	81	1.28	0
1914	—	42	13	20	3.24	280.2	167	75	1.27	1
1915	—	37	11	11	3.27	209.0	111	73	1.31	2
1916	BAL	41	13	9	2.57	217.1	92	98	1.25	4
1917	BAL	38	8	19	2.94	232.2	82	95	1.24	3
1918	CLE	14	2	2	7.06	43.1	8	18	2.03	0

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