Jesse Orosco career ERA

• Best season on file: 1.47 in 1983.
• Most recent: 7.68 in 2003.

Average of 24 regular seasons, 1979 through 2003. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Jesse Orosco 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.
1979	NYM	18	1	2	4.89	35.0	22	22	1.57	0
1981	NYM	8	0	1	1.59	17.0	18	6	1.12	1
1982	NYM	54	4	10	2.72	109.1	89	40	1.21	4
1983	NYM	62	13	7	1.47	110.0	84	38	1.04	17
1984	NYM	60	10	6	2.59	87.0	85	34	1.06	31
1985	NYM	54	8	6	2.73	79.0	68	34	1.27	17
1986	NYM	58	8	6	2.33	81.0	62	35	1.22	21
1987	NYM	58	3	9	4.44	77.0	78	31	1.42	16
1988	LAD	55	3	2	2.72	53.0	43	30	1.34	9
1989	CLE	69	3	4	2.08	78.0	79	26	1.03	3
1990	CLE	55	5	4	3.90	64.2	55	38	1.48	2
1991	CLE	47	2	0	3.74	45.2	36	15	1.47	0
1992	MIL	59	3	1	3.23	39.0	40	13	1.18	1
1993	MIL	57	3	5	3.18	56.2	67	17	1.13	8
1994	MIL	40	3	1	5.08	39.0	36	26	1.49	0
1995	BAL	65	2	4	3.26	49.2	58	27	1.11	3
1996	BAL	66	3	1	3.40	55.2	52	28	1.26	0
1997	BAL	71	6	3	2.32	50.1	46	30	1.17	0
1998	BAL	69	4	1	3.18	56.2	50	28	1.31	7
1999	BAL	65	0	2	5.34	32.0	35	20	1.50	1
2000	STL	6	0	0	3.86	2.1	4	3	2.57	0
2001	LAD	35	0	1	3.94	16.0	21	7	1.50	0
2002	LAD	56	1	2	3.00	27.0	22	12	1.33	1
2003	SD/NYY/MIN	65	2	2	7.68	34.0	29	21	1.82	2

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