Luis Tiant career ERA

• Best season on file: 1.60 in 1968.
• Most recent: 5.76 in 1982.

Average of 19 regular seasons, 1964 through 1982. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Luis Tiant 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.
1964	CLE	19	10	4	2.83	127.0	105	47	1.11	1
1965	CLE	41	11	11	3.53	196.1	152	66	1.18	1
1966	CLE	46	12	11	2.79	155.0	145	50	1.10	8
1967	CLE	33	12	9	2.74	213.2	219	67	1.14	2
1968	CLE	34	21	9	1.60	258.1	264	73	0.87	0
1969	CLE	38	9	20	3.71	249.2	156	129	1.43	0
1970	MIN	18	7	3	3.40	92.2	50	41	1.35	0
1971	BOS	21	1	7	4.85	72.1	59	32	1.45	0
1972	BOS	43	15	6	1.91	179.0	123	65	1.08	3
1973	BOS	35	20	13	3.34	272.0	206	78	1.08	0
1974	BOS	38	22	13	2.92	311.1	176	82	1.17	0
1975	BOS	35	18	14	4.02	260.0	142	72	1.28	0
1976	BOS	38	21	12	3.06	279.0	131	64	1.21	0
1977	BOS	32	12	8	4.53	188.2	124	51	1.38	0
1978	BOS	32	13	8	3.31	212.1	114	57	1.14	0
1979	NYY	30	13	8	3.91	195.2	104	53	1.24	0
1980	NYY	25	8	9	4.89	136.1	84	50	1.39	0
1981	PIT	9	2	5	3.92	57.1	32	19	1.27	0
1982	LAA	6	2	2	5.76	29.2	30	8	1.58	0

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