Mule Watson career ERA

• Best season on file: 3.37 in 1918.
• Most recent: 3.79 in 1924.

Average of 7 regular seasons, 1918 through 1924. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Mule Watson 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.
1918	ATH	21	7	10	3.37	141.2	30	44	1.29	0
1919	ATH	4	0	1	6.91	14.1	6	7	1.67	0
1920	PIT/ATL	18	5	4	4.29	86.0	17	24	1.37	0
1921	ATL	44	14	13	3.85	259.1	48	57	1.26	2
1922	ATL	41	8	14	4.70	201.0	53	59	1.60	1
1923	ATL/SF	28	9	7	3.80	139.2	36	41	1.43	1
1924	SF	22	7	4	3.79	99.2	18	24	1.46	0

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