George Mullin career ERA

• Best season on file: 2.22 in 1909.
• Most recent: 5.85 in 1915.

Average of 14 regular seasons, 1902 through 1915. Figures come from ESPN's box scores and were last read on September 23, 2026.

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George Mullin 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.
1902	DET	35	13	16	3.67	260.0	78	95	1.45	0
1903	DET	41	19	15	2.25	320.2	170	106	1.22	2
1904	DET	45	17	23	2.40	382.1	161	131	1.24	0
1905	DET	44	21	21	2.51	347.2	168	138	1.27	0
1906	DET	40	21	18	2.78	330.0	123	108	1.28	0
1907	DET	46	20	20	2.59	357.1	146	106	1.26	3
1908	DET	39	17	13	3.10	290.2	121	71	1.28	0
1909	DET	40	29	8	2.22	303.2	124	78	1.11	1
1910	DET	38	21	12	2.87	289.0	98	102	1.25	0
1911	DET	30	18	10	3.07	234.1	87	61	1.31	0
1912	DET	30	12	17	3.54	226.0	88	92	1.35	0
1913	DET/MIN	18	4	11	3.94	109.2	30	43	1.50	0
1914	—	36	14	10	2.70	203.0	74	91	1.44	2
1915	—	5	2	2	5.85	32.1	14	16	1.76	0

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