Tom Seaver career ERA

• Best season on file: 1.76 in 1971.
• Most recent: 4.03 in 1986.

Average of 20 regular seasons, 1967 through 1986. Figures come from ESPN's box scores and were last read on September 22, 2026.

CopyCSV

Tom Seaver 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.
1967	NYM	35	16	13	2.76	251.0	170	78	1.20	0
1968	NYM	36	16	12	2.20	277.2	205	48	0.98	1
1969	NYM	36	25	7	2.21	273.1	208	82	1.04	0
1970	NYM	37	18	12	2.82	290.2	283	83	1.08	0
1971	NYM	36	20	10	1.76	286.1	289	61	0.95	0
1972	NYM	35	21	12	2.92	262.0	249	77	1.11	0
1973	NYM	36	19	10	2.08	290.0	251	64	0.98	0
1974	NYM	32	11	11	3.20	236.0	201	75	1.16	0
1975	NYM	36	22	9	2.38	280.1	243	88	1.09	0
1976	NYM	35	14	11	2.59	271.0	235	77	1.06	0
1977	NYM/CIN	33	21	6	2.58	261.1	196	66	1.01	0
1978	CIN	36	16	14	2.88	259.2	226	89	1.18	0
1979	CIN	32	16	6	3.14	215.0	131	61	1.15	0
1980	CIN	26	10	8	3.64	168.0	101	59	1.18	0
1981	CIN	23	14	2	2.54	166.1	87	66	1.12	0
1982	CIN	21	5	13	5.50	111.1	62	44	1.62	0
1983	NYM	34	9	14	3.55	231.0	135	86	1.24	0
1984	CHW	34	15	11	3.95	236.2	131	61	1.17	0
1985	CHW	35	16	11	3.17	238.2	134	69	1.22	0
1986	CHW/BOS	28	7	13	4.03	176.1	103	56	1.34	0

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