Bill Butler career ERA

• Best season on file: 1.54 in 1972.
• Most recent: 6.86 in 1977.

Average of 7 regular seasons, 1969 through 1977. Figures come from ESPN's box scores and were last read on September 23, 2026.

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Bill Butler 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.
1969	KC	34	9	10	3.90	193.2	156	91	1.37	0
1970	KC	25	4	12	3.77	140.2	75	87	1.45	0
1971	KC	14	1	2	3.45	44.1	32	18	1.42	0
1972	CLE	6	0	0	1.54	11.2	6	10	1.63	0
1974	MIN	26	4	6	4.10	98.2	79	56	1.49	1
1975	MIN	23	5	4	5.95	81.2	55	35	1.65	0
1977	MIN	6	0	1	6.86	21.0	5	15	1.62	0

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