Dennis Eckersley career ERA

• Best season on file: 0.61 in 1990.
• Most recent: 4.76 in 1998.

Average of 24 regular seasons, 1975 through 1998. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Dennis Eckersley 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.
1975	CLE	34	13	7	2.60	187.0	152	90	1.27	2
1976	CLE	36	13	12	3.44	199.0	200	78	1.17	1
1977	CLE	33	14	13	3.53	247.0	191	54	1.09	0
1978	BOS	35	20	8	2.99	268.0	162	71	1.23	0
1979	BOS	33	17	10	2.99	247.0	150	59	1.19	0
1980	BOS	30	12	14	4.27	198.0	121	44	1.17	0
1981	BOS	23	9	8	4.27	154.0	79	35	1.27	0
1982	BOS	33	13	13	3.73	224.1	127	43	1.21	0
1983	BOS	28	9	13	5.61	176.1	77	39	1.49	0
1984	BOS/CHC	33	14	12	3.60	225.0	114	49	1.21	0
1985	CHC	25	11	7	3.08	169.1	117	19	0.97	0
1986	CHC	33	6	11	4.57	201.0	137	43	1.34	0
1987	ATH	54	6	8	3.03	115.2	113	17	1.00	16
1988	ATH	60	4	2	2.35	72.2	70	11	0.87	45
1989	ATH	51	4	0	1.56	57.2	55	3	0.61	33
1990	ATH	63	4	2	0.61	73.1	73	4	0.61	48
1991	ATH	67	5	4	2.96	76.0	87	9	0.91	43
1992	ATH	69	7	1	1.91	80.0	93	11	0.91	51
1993	ATH	64	2	4	4.16	67.0	80	13	1.19	36
1994	ATH	45	5	4	4.26	44.1	47	13	1.40	19
1995	ATH	52	4	6	4.83	50.1	40	11	1.27	29
1996	STL	63	0	6	3.30	60.0	49	6	1.18	30
1997	STL	57	1	5	3.91	53.0	45	8	1.08	36
1998	BOS	50	4	1	4.76	39.2	22	8	1.36	1

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