Rube Walberg career ERA

• Best season on file: 2.80 in 1926.
• Most recent: 5.59 in 1937.

Figures come from ESPN's box scores and were last read on September 22, 2026.

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Rube Walberg 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.
1923	SF/ATH	28	4	8	5.18	120.0	39	61	1.56	0
1924	ATH	6	0	0	12.86	7.0	3	10	2.86	0
1925	ATH	53	8	14	3.99	191.2	82	77	1.43	7
1926	ATH	40	12	10	2.80	151.0	72	60	1.51	2
1927	ATH	46	16	12	3.93	249.1	136	91	1.40	4
1928	ATH	38	17	12	3.55	235.2	112	64	1.27	1
1929	ATH	40	18	11	3.60	267.2	94	99	1.33	4
1930	ATH	38	13	12	4.69	205.1	100	85	1.42	1
1931	ATH	44	20	12	3.74	291.0	106	109	1.40	3
1932	ATH	41	17	10	4.73	272.0	96	103	1.50	1
1933	ATH	40	9	13	4.88	201.0	68	95	1.59	4
1934	BOS	30	6	7	4.04	104.2	38	41	1.52	1
1935	BOS	44	5	9	3.91	142.2	44	54	1.44	3
1936	BOS	24	5	4	4.40	100.1	49	36	1.34	0
1937	BOS	32	5	7	5.59	104.2	46	46	1.81	1

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