lowest career era with winning percentage of <.500 min 80 innings pitched

Al Spalding has the lowest career ERA with a win percentage of .500 or better and when pitching at least 80 innings, with an ERA of 1.78.

Interpreted as:

lowest career era by a player with winning percentage of <.500 min 80 innings pitched

	NAME	ERA	W%	IP	W	L	G	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	Al Spalding A. Spalding	1.78	.800	539.2	48	12	65	61	41	53	8	1	559	107	238	6	26		4		2,272	1	0.68	0.43	1.58	0.10	1.8	1.1	1.08		3.97	74	2.38	99	9.32	9.6
2	Ed Walsh E. Walsh	1.82	.607	2964.1	195	126	430	315	1,736	250	57	35	2,346	598	873	23	617	52	105		11,413	76	5.27	1.87	2.81	0.07	15.2	5.4	1.00	.259	2.65	69	2.02	79	7.12	164.3
3	Charlie Hodnett C. Hodnett	1.88	.778	153.0	14	4	18	18	47	15	1	0	149	32	66	1	23		0		647	10	2.76	1.35	2.04	0.06	7.3	3.6	1.12		3.88	63	3.19	117	8.76	-8.8
4	Addie Joss A. Joss	1.89	.623	2327.0	160	97	286	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
5	Jim Devlin J. Devlin	1.89	.520	1181.0	65	60	129	129	263	127	9	0	1,183	248	597	7	78		0		4,896	34	2.00	0.59	3.37	0.05	5.4	1.6	1.07		4.55	67	2.35	84	9.02	88.9
6	Paul Skenes P. Skenes	1.96	.618	320.2	21	13	55	55	386	1	0	0	230	70	76	21	74	12	0	0	1,247	4	10.83	2.08	5.22	0.59	31.0	5.9	0.95	.277	2.13	46	2.39	58	6.46	61
7	Perry Werden P. Werden	1.97	.923	141.1	12	1	16	16	51	12	1	0	113	31	61	1	22		0		575	5	3.25	1.40	2.32	0.06	8.9	3.8	0.96		3.88	67	3.11	121	7.20	-10
8	Félix Bautista F. Bautista	2.01	.650	161.1	13	7	156	0	248	0	0	67	84	36	42	14	72	3	104	1	632	10	13.83	4.02	3.44	0.78	39.2	11.4	0.97	.237	2.34	51	2.61	65	4.69	25.9
9	Jack Pfiester J. Pfiester	2.02	.617	1067.1	71	44	149	128	503	75	17	0	869	240	365	6	293	39	12		4,236	16	4.24	2.47	1.72	0.05	11.9	6.9	1.09	.254	3.08	77	2.32	86	7.33	44.3
10	Joe Wood J. Wood	2.03	.672	1434.1	117	57	225	158	989	121	28	10	1,138	324	497	10	421	49	56		5,640	43	6.21	2.64	2.35	0.06	17.5	7.5	1.09	.270	3.12	70	2.26	78	7.14	105.8
11	Mordecai Brown M. Brown	2.06	.648	3172.1	239	130	481	332	1,375	271	55	49	2,708	725	1,044	43	673	61	138		12,422	61	3.90	1.91	2.04	0.12	11.1	5.4	1.07	.259	2.96	71	2.42	83	7.68	161.9
12	Chick Brandom C. Brandom	2.08	.750	108.0	3	1	32	4	44	2	0	3	101	25	53	0	29	3	20		415	1	3.67	2.42	1.52	0.00	10.6	7.0	1.20	.298	4.42	74	2.36	87	8.42	3.8
13	John Ward J. Ward	2.10	.614	2469.2	164	103	293	262	920	245	24	3	2,324	576	1,185	26	253		32		10,164	144	3.35	0.92	3.64	0.09	9.1	2.5	1.04		4.32	82	2.43	96	8.47	9.1
14	Christy Mathewson C. Mathewson	2.13	.665	4788.2	373	188	636	552	2,507	435	79	30	4,219	1,135	1,620	89	848	59	73		18,913	115	4.71	1.59	2.96	0.17	13.3	4.5	1.06	.268	3.04	75	2.26	76	7.93	363
15	Rube Waddell R. Waddell	2.16	.574	2961.1	193	143	407	340	2,316	261	50	5	2,460	711	1,063	37	803	115	54		11,717	74	7.04	2.44	2.88	0.11	19.8	6.9	1.10	.287	3.23	75	2.03	71	7.48	262
16	Walter Johnson W. Johnson	2.17	.599	5914.1	417	279	802	666	3,509	531	110	34	4,913	1,424	1,902	97	1,363	205	127		23,405	154	5.34	2.07	2.57	0.15	15.0	5.8	1.06	.264	2.89	68	2.42	76	7.48	472.8
17	Glenn Liebhardt G. Liebhardt	2.17	.507	612.2	36	35	90	66	280	49	7	2	543	148	225	3	183	14	23		2,419	21	4.11	2.69	1.53	0.04	11.6	7.6	1.18	.278	3.31	89	2.27	98	7.98	1.6
18	Mellie Wolfgang M. Wolfgang	2.18	.517	326.0	15	14	77	27	111	15	3	0	268	79	115	3	95	4	37		1,269	3	3.06	2.62	1.17	0.08	8.7	7.5	1.11	.251	3.17	79	2.72	97	7.40	3
19	Mariano Rivera M. Rivera	2.21	.577	1283.2	82	60	1,115	10	1,173	0	0	652	998	315	340	71	286	46	952	41	5,103	13	8.22	2.01	4.10	0.50	23.0	5.6	1.00	.263	2.38	49	2.76	61	7.00	246.7
20	Erv Lange E. Lange	2.23	.522	190.0	12	11	36	22	87	10	2	2	162	47	69	3	55	3	11		781	1	4.12	2.61	1.58	0.14	11.1	7.0	1.14	.251	3.27	74	2.64	96	7.67	1.2
21	Jake Weimer J. Weimer	2.23	.584	1472.2	97	69	191	180	657	143	21	2	1,227	365	511	14	493	73	9		5,971	26	4.02	3.01	1.33	0.09	11.0	8.3	1.17	.256	3.12	81	2.81	98	7.50	8.7
22	Jocko Flynn J. Flynn	2.24	.793	257.0	23	6	32	29	146	28	2	1	207	64	127	9	63		3		1,049	28	5.11	2.21	2.32	0.32	13.9	6.0	1.05		4.45	64	3.16	89	7.25	14.6
23	Tommy Bond T. Bond	2.25	.627	2779.2	193	115	322	314	860	294	35	0	2,857	695	1,339	32	178		11		11,386	120	2.78	0.58	4.83	0.10	7.6	1.6	1.09	.274	4.34	89	2.38	95	9.25	32.3
24	Orval Overall O. Overall	2.26	.603	1535.1	108	71	218	182	935	133	30	12	1,232	385	520	16	551	45	30		6,145	57	5.48	3.23	1.70	0.09	15.2	9.0	1.16	.264	3.05	81	2.39	85	7.22	72.4
25	Will White W. White	2.28	.580	3542.2	229	166	403	402	1,041	394	36	0	3,440	896	1,844	65	496		1		14,951	221	2.64	1.26	2.10	0.17	7.0	3.3	1.11	.254	4.68	83	2.98	108	8.74	-109.3