Frank Tanana ERA in 1991

• 10th-best of Frank Tanana's 21 seasons on file; the best is 2.44 in 1976.
• Down 1.54 from 5.31 in 1990.

Average of 21 regular seasons, 1973 through 1993. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Frank Tanana 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.
1973	LAA	4	2	2	3.12	26.0	22	8	1.08	0
1974	LAA	39	14	19	3.11	269.0	180	77	1.26	0
1975	LAA	34	16	9	2.63	257.0	269	73	1.11	0
1976	LAA	34	19	10	2.44	288.0	261	73	0.99	0
1977	LAA	31	15	9	2.54	241.0	205	61	1.09	0
1978	LAA	33	18	12	3.65	239.0	137	60	1.25	0
1979	LAA	18	7	5	3.90	90.0	46	25	1.31	0
1980	LAA	32	11	12	4.15	204.0	113	45	1.31	0
1981	BOS	24	4	10	4.02	141.0	78	43	1.31	0
1982	TEX	30	7	18	4.21	194.1	87	55	1.31	0
1983	TEX	29	7	9	3.16	159.1	108	49	1.21	0
1984	TEX	35	15	15	3.25	246.1	141	81	1.28	0
1985	TEX/DET	33	12	14	4.27	215.0	159	57	1.29	0
1986	DET	32	12	9	4.16	188.1	119	65	1.39	0
1987	DET	34	15	10	3.91	218.2	146	56	1.24	0
1988	DET	32	14	11	4.21	203.0	127	64	1.36	0
1989	DET	33	10	14	3.58	223.2	147	74	1.35	0
1990	DET	34	9	8	5.31	176.1	114	66	1.45	1
1991	DET	33	13	12	3.77	217.1	107	78	1.36	0
1992	DET	32	13	11	4.39	186.2	91	90	1.49	0
1993	NYY/NYM	32	7	17	4.35	202.2	116	55	1.34	0

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