player with the best era all-time guardians

Addie Joss has the best career ERA for the Cleveland Naps, with an ERA of 1.89.

Interpreted as:

player with the best era with a minimum of 750 IP all-time guardians

	NAME	ERA	IP	G	W	L	W%	GS	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Addie Joss A. Joss	1.89	2327.0	286	160	97	.623	260	920	234	45	5	1,888	488	730	19	364	58	22		8,891	28	3.56	1.41	2.53	0.07	10.3	4.1	0.97	.248	2.82	70	2.25	86	7.30	88.8
2	Vean Gregg V. Gregg	2.31	898.1	132	72	36	.667	106	531	77	10	5	760	231	315	8	348	36	24		3,591	28	5.32	3.49	1.53	0.08	14.8	9.7	1.23	.282	3.16	73	2.91	92	7.61	29.3
3	Bob Rhoads B. Rhoads	2.39	1444.2	185	88	66	.571	160	427	130	19	1	1,319	383	547	15	405	49	22		5,748	35	2.66	2.52	1.05	0.09	7.4	7.0	1.19	.269	3.41	93	2.80	114	8.22	-57.8
4	Bill Bernhard B. Bernhard	2.45	1175.0	146	77	55	.583	133	414	118	12	1	1,121	320	471	14	202	15	11		4,655	22	3.17	1.55	2.05	0.11	8.9	4.3	1.13	.276	3.61	89	2.51	92	8.59	27.7
5	Otto Hess O. Hess	2.50	842.2	118	46	49	.484	95	391	81	15	4	749	234	346	8	249	51	22		3,414	30	4.18	2.66	1.57	0.09	11.5	7.3	1.18	.273	3.70	93	2.67	103	8.00	-9.6
6	Earl Moore E. Moore	2.58	1337.2	161	82	68	.547	151	616	137	15	1	1,197	384	598	21	449	51	9		5,498	48	4.14	3.02	1.37	0.14	11.2	8.2	1.23	.270	4.02	86	3.05	102	8.05	-12.3
7	Cy Falkenberg C. Falkenberg	2.70	850.2	123	57	41	.582	103	418	63	11	2	788	255	336	6	247	23	18		3,401	38	4.42	2.61	1.69	0.06	12.3	7.3	1.22	.289	3.55	99	2.48	90	8.34	29.8
8	Gaylord Perry G. Perry	2.71	1130.2	134	70	57	.551	133	773	96	17	1	918	340	377	92	330	24	1	37	4,526	32	6.15	2.63	2.34	0.73	17.1	7.3	1.10	.250	3.00	74	3.14	85	7.31	65.3
9	Sonny Siebert S. Siebert	2.76	991.0	181	61	48	.560	131	786	33	8	9	765	304	348	84	315	27	20	21	3,999	27	7.14	2.86	2.50	0.76	19.7	7.9	1.09	.244	3.16	83	3.07	89	6.95	44.9
10	Stan Coveleski S. Coveleski	2.80	2502.1	360	172	123	.583	305	856	193	31	20	2,450	779	972	53	616	27	47		10,266	29	3.08	2.22	1.39	0.19	8.3	6.0	1.23	.275	3.50	78	3.04	85	8.81	154.5
11	Luis Tiant L. Tiant	2.84	1200.0	211	75	64	.540	160	1,041	63	21	12	939	379	431	126	432	20	33	26	4,902	13	7.81	3.24	2.41	0.95	21.2	8.8	1.14	.248	3.23	83	3.26	91	7.04	35.8
12	Willie Mitchell W. Mitchell	2.89	1301.1	219	63	76	.453	148	775	74	9	4	1,158	418	600	9	496	56	52		5,344	44	5.36	3.43	1.56	0.06	14.5	9.3	1.27	.287	4.15	96	2.70	89	8.01	50.4
13	Sam McDowell S. McDowell	2.99	2109.2	336	122	109	.528	295	2,159	97	22	11	1,603	702	805	138	1,072	53	24	61	8,889	114	9.21	4.57	2.01	0.59	24.3	12.1	1.27	.268	3.43	85	2.93	80	6.84	169.8
14	Jim Bagby J. Bagby	3.03	1735.2	290	122	86	.587	201	424	131	16	26	1,772	584	714	39	424	32	81		7,088	19	2.20	2.20	1.00	0.20	6.0	6.0	1.27	.281	3.70	89	3.12	93	9.19	46.7
15	Fred Blanding F. Blanding	3.13	814.1	144	46	46	.500	86	278	57	5	3	859	283	392	15	277	17	48		3,371	23	3.07	3.06	1.00	0.17	8.2	8.2	1.40	.303	4.33	99	3.31	105	9.49	-12
16	Guy Morton G. Morton	3.13	1629.2	317	98	86	.533	185	830	82	19	9	1,520	567	747	27	583	22	79		6,751	35	4.58	3.22	1.42	0.15	12.3	8.6	1.29	.282	4.13	93	2.88	85	8.39	93.5
17	Corey Kluber C. Kluber	3.16	1341.2	208	98	58	.628	203	1,461	17	7	0	1,165	471	518	132	292	46	3	9	5,398	25	9.80	1.96	5.00	0.89	27.1	5.4	1.09	.298	3.47	75	2.98	72	7.81	170.4
18	Steve Gromek S. Gromek	3.22	1340.2	309	78	67	.538	137	595	57	10	16	1,209	479	559	89	440	29	86		5,595	15	3.99	2.95	1.35	0.60	10.6	7.9	1.23	.252	3.75	90	3.54	99	8.12	-0.6
19	Shane Bieber S. Bieber	3.22	843.0	136	62	32	.660	134	958	5	2	0	752	302	323	94	188	18	1	1	3,415	34	10.23	2.01	5.10	1.00	28.1	5.5	1.12	.305	3.45	76	3.08	73	8.03	108
20	Bert Blyleven B. Blyleven	3.23	760.2	104	48	37	.565	103	548	41	9	0	688	273	302	52	218	28	0	10	3,140	15	6.48	2.58	2.51	0.62	17.5	6.9	1.19	.277	3.57	80	3.12	78	8.14	74.6
21	Bob Lemon B. Lemon	3.23	2850.0	460	207	128	.618	350	1,277	188	31	22	2,559	1,024	1,185	180	1,251	57	73	13	12,099	63	4.03	3.95	1.02	0.57	10.6	10.3	1.34	.255	3.74	84	3.79	99	8.08	7.5
22	Mike Garcia M. Garcia	3.24	2138.0	397	142	96	.597	281	1,095	111	27	22	2,102	770	865	119	696	32	65	20	9,058	27	4.61	2.93	1.57	0.50	12.1	7.7	1.31	.279	3.64	84	3.18	83	8.85	154.6
23	Early Wynn E. Wynn	3.24	2286.2	343	164	102	.617	296	1,277	144	24	11	2,037	824	923	181	877	26	36	20	9,611	21	5.03	3.45	1.46	0.71	13.3	9.1	1.27	.256	3.63	84	3.55	93	8.02	68.1
24	Bob Feller B. Feller	3.25	3827.0	570	266	162	.621	484	2,581	279	44	22	3,271	1,384	1,557	224	1,764	60	52	6	16,180	69	6.07	4.15	1.46	0.53	16.0	10.9	1.32	.264	3.66	82	3.48	89	7.69	184.6
25	Allie Reynolds A. Reynolds	3.31	792.1	139	51	47	.520	100	456	41	9	8	693	291	331	22	442	17	27		3,422	13	5.18	5.02	1.03	0.25	13.3	12.9	1.43	.270	3.76	102	3.42	105	7.87	-18.1