Bob Welch ERA in 1991

• 15th-best of Bob Welch's 17 seasons on file; the best is 2.03 in 1978.
• Up 1.63 from 2.95 in 1990.

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

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Bob Welch ERA in 1991, 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.
1978	LAD	23	7	4	2.03	111.0	66	26	1.06	3
1979	LAD	25	5	6	4.00	81.0	64	32	1.41	5
1980	LAD	32	14	9	3.28	214.0	141	79	1.26	0
1981	LAD	23	9	5	3.45	141.0	88	41	1.29	0
1982	LAD	36	16	11	3.36	235.2	176	81	1.19	0
1983	LAD	31	15	12	2.65	204.0	156	72	1.16	0
1984	LAD	31	13	13	3.78	178.2	126	58	1.39	0
1985	LAD	23	14	4	2.31	167.1	96	35	1.05	0
1986	LAD	33	7	13	3.28	235.2	183	55	1.20	0
1987	LAD	35	15	9	3.22	251.2	196	86	1.15	0
1988	ATH	36	17	9	3.64	244.2	158	81	1.30	0
1989	ATH	33	17	8	3.00	209.2	137	78	1.28	0
1990	ATH	35	27	6	2.95	238.0	127	77	1.22	0
1991	ATH	35	12	13	4.58	220.0	101	91	1.41	0
1992	ATH	20	11	7	3.27	123.2	47	43	1.27	0
1993	ATH	30	9	11	5.29	166.2	63	56	1.58	0
1994	ATH	25	3	6	7.08	68.2	44	43	1.78	0

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