Between the 1920 and 1929 seasons, Ray Fisher had the lowest ERA, with an ERA of 2.73.

Interpreted as:

lowest era with a minimum of 0.5 IP per team game by a pitcher in the 1920's

	NAME	ERA	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Ray Fisher R. Fisher	2.73	33	10	11	.476	21	56	10	1	1	201.0	189	61	86	5	50	8	8	846	1	2.51	2.24	1.12	0.22	6.6	5.9	1.19	.253	3.85	91	3.38	107	8.46	-6.2
2	Wilcy Moore W. Moore	2.96	126	29	15	.659	14	114	6	1	25	334.1	320	110	148	11	109	1	76	1,423	7	3.07	2.93	1.05	0.30	8.0	7.7	1.28	.260	3.98	75	3.76	96	8.61	5.4
3	Grover Alexander G. Alexander	3.04	325	165	105	.611	290	653	194	20	16	2415.1	2,528	816	982	111	349	15	29	9,893	18	2.43	1.30	1.87	0.41	6.6	3.5	1.19	.276	3.66	77	3.48	88	9.42	127
4	Lefty Grove L. Grove	3.09	222	87	52	.626	147	837	82	8	23	1254.1	1,191	430	530	41	456	17	50	5,318	31	6.01	3.27	1.84	0.29	15.7	8.6	1.31	.290	3.80	73	3.24	77	8.55	133.2
5	Dolf Luque D. Luque	3.09	353	138	146	.486	302	904	168	21	8	2479.2	2,446	851	1,059	75	688	21	38	10,321	35	3.28	2.50	1.31	0.27	8.8	6.7	1.26	.275	3.84	82	3.52	93	8.88	74.3
6	Dazzy Vance D. Vance	3.10	266	147	90	.620	244	1,464	172	22	4	2053.2	1,891	708	820	83	583	61	18	8,506	24	6.42	2.55	2.51	0.36	17.2	6.9	1.20	.286	3.59	77	3.05	76	8.29	219.9
7	Elmer Ponder E. Ponder	3.19	57	16	21	.432	35	96	20	2	0	310.0	328	110	142	11	60	5	15	1,298	10	2.79	1.74	1.60	0.32	7.4	4.6	1.25	.282	4.12	93	3.35	94	9.52	6.2
8	Stan Coveleski S. Coveleski	3.20	274	133	89	.599	253	558	137	21	9	1933.2	2,041	688	851	53	510	18	16	8,171	21	2.60	2.37	1.09	0.25	6.8	6.2	1.32	.283	3.96	78	3.57	88	9.50	97.7
9	Pat Malone P. Malone	3.22	82	40	23	.635	55	321	35	7	4	517.2	501	185	219	27	201	12	21	2,200	16	5.58	3.49	1.60	0.47	14.6	9.1	1.36	.289	3.81	74	3.71	86	8.71	35.3
10	Hod Eller H. Eller	3.24	48	15	14	.517	26	83	15	1	1	244.2	254	88	102	9	67	5	16	1,023	4	3.05	2.46	1.24	0.33	8.1	6.5	1.31	.285	3.75	104	3.48	107	9.34	-8.1
11	Eppa Rixey E. Rixey	3.24	386	166	142	.539	330	686	185	20	10	2678.1	2,827	964	1,169	59	567	37	47	11,150	38	2.31	1.91	1.21	0.20	6.2	5.1	1.27	.282	3.93	85	3.44	89	9.50	117.2
12	Phil Douglas P. Douglas	3.24	110	40	24	.625	69	159	33	7	4	605.1	645	218	259	29	145	8	24	2,542	11	2.36	2.16	1.10	0.43	6.3	5.7	1.31	.280	3.85	91	3.80	104	9.59	-12.8
13	Tommy Thomas T. Thomas	3.24	156	65	62	.512	131	425	85	10	7	1099.1	1,043	396	464	54	340	6	19	4,584	5	3.48	2.78	1.25	0.44	9.3	7.4	1.26	.263	3.80	81	3.81	95	8.54	20.5
14	Eddie Cicotte E. Cicotte	3.26	37	21	10	.677	35	87	28	4	2	303.1	316	110	128	6	74	2	2	1,225	3	2.58	2.20	1.18	0.18	7.1	6.0	1.29	.294	3.80	86	3.18	88	9.38	15.3
15	Lefty Tyler L. Tyler	3.30	37	14	14	.500	33	65	22	2	0	243.0	252	89	105	8	71	3	4	1,019	3	2.41	2.63	0.92	0.30	6.4	7.0	1.33	.280	3.89	102	3.63	107	9.33	-6
16	Rube Benton R. Benton	3.32	149	44	47	.484	95	200	42	7	5	793.2	885	293	374	25	163	13	28	3,375	14	2.27	1.85	1.23	0.28	5.9	4.8	1.32	.289	4.24	91	3.53	95	10.04	14.1
17	Walter Johnson W. Johnson	3.33	258	120	88	.577	227	895	143	24	12	1823.2	1,768	675	799	66	545	63	28	7,669	25	4.42	2.69	1.64	0.33	11.7	7.1	1.27	.279	3.94	84	3.49	89	8.73	88
18	Slim Sallee S. Sallee	3.34	63	12	10	.545	14	38	7	0	4	229.1	260	85	112	11	30	2	26	954	0	1.49	1.18	1.27	0.43	4.0	3.1	1.26	.285	4.40	101	3.61	105	10.20	-4.8
19	Urban Shocker U. Shocker	3.34	330	156	93	.627	261	753	168	22	22	2148.2	2,256	797	946	117	484	26	53	9,020	10	3.15	2.03	1.56	0.49	8.3	5.4	1.28	.280	3.96	80	3.71	90	9.45	102.2
20	Red Faber R. Faber	3.34	316	149	116	.562	297	804	181	17	4	2364.0	2,429	878	1,045	73	664	47	14	9,958	28	3.06	2.53	1.21	0.28	8.1	6.7	1.31	.281	3.98	83	3.62	90	9.25	101.7
21	Watty Clark W. Clark	3.35	120	36	33	.522	62	263	30	5	6	573.0	600	213	261	20	154	6	38	2,455	9	4.13	2.42	1.71	0.31	10.7	6.3	1.32	.288	4.10	77	3.43	81	9.42	52.9
22	Babe Adams B. Adams	3.36	174	63	45	.583	107	246	57	14	10	930.2	993	347	408	32	104	9	41	3,830	8	2.38	1.01	2.37	0.31	6.4	2.7	1.18	.279	3.95	87	3.23	84	9.60	62.2
23	Wilbur Cooper W. Cooper	3.36	248	120	95	.558	221	577	151	16	3	1793.0	1,946	669	805	74	395	51	18	7,562	14	2.90	1.98	1.46	0.37	7.6	5.2	1.31	.290	4.04	87	3.62	93	9.77	54.9
24	Bill Doak B. Doak	3.38	228	82	68	.547	172	385	66	14	10	1268.2	1,330	477	596	42	384	27	36	5,394	15	2.73	2.72	1.00	0.30	7.1	7.1	1.35	.283	4.23	91	3.75	100	9.44	-2.7
25	Fred Toney F. Toney	3.40	126	55	40	.579	109	202	55	6	4	810.2	842	306	361	34	214	18	16	3,391	16	2.24	2.38	0.94	0.38	6.0	6.3	1.30	.276	4.01	94	3.84	105	9.35	-18.6