Les Sweetland has the worst career ERA when winning 20+ games, with an ERA of 6.10.

	NAME	ERA	W	L	W%	G	GS	SO	CG	SHO	SV	IP	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	Les Sweetland L. Sweetland	6.10	33	58	.363	161	96	159	38	3	4	740.2	992	502	570	69	358	37	37		3,504	13	1.93	4.35	0.44	0.84	4.5	10.2	1.82	.320	6.93	131	5.55	118	12.05	-60.4
2	Kevin Jarvis K. Jarvis	6.03	34	49	.410	187	118	453	4	3	1	780.2	937	523	568	149	262	23	22	23	3,492	21	5.22	3.02	1.73	1.72	13.0	7.5	1.54	.302	6.55	138	5.50	124	10.80	-92.3
3	Con Lucid C. Lucid	6.02	23	23	.500	54	50	65	36	3	0	375.0	482	251	340	15	204	28	4		1,798	13	1.56	4.90	0.32	0.36	3.6	11.3	1.83	.314	8.16	132	5.58	122	11.57	-47.2
4	Scott Aldred S. Aldred	6.02	20	39	.339	229	67	312	1	0	1	499.2	581	334	356	78	230	19	29	20	2,267	30	5.62	4.14	1.36	1.40	13.8	10.1	1.62	.309	6.41	131	5.32	118	10.46	-41.5
5	Ryan Rupe R. Rupe	5.85	24	38	.387	89	84	355	2	0	0	476.2	514	310	336	81	162	42	0	5	2,101	21	6.70	3.06	2.19	1.53	16.9	7.7	1.42	.296	6.34	125	5.07	111	9.70	-26
6	Claude Willoughby C. Willoughby	5.84	38	58	.396	219	101	175	33	4	9	841.1	1,111	546	631	57	406	18	60		3,940	22	1.87	4.34	0.43	0.61	4.4	10.3	1.80	.321	6.75	125	5.09	109	11.88	-30
7	Victor Frazier V. Frazier	5.77	23	38	.377	126	68	170	21	2	4	579.0	686	371	437	37	291	11	25		2,693	12	2.64	4.52	0.58	0.58	6.3	10.8	1.69	.297	6.79	133	4.82	116	10.66	-43.6
8	Rob Bell R. Bell	5.71	34	37	.479	151	108	421	2	0	0	686.0	757	435	465	125	288	21	15	13	3,062	42	5.52	3.78	1.46	1.64	13.7	9.4	1.52	.286	6.10	124	5.55	121	9.93	-72.8
9	Dan Wright D. Wright	5.65	20	26	.435	70	64	225	1	1	1	366.2	393	230	249	65	167	13	2	5	1,638	21	5.52	4.10	1.35	1.60	13.7	10.2	1.53	.281	6.11	123	5.54	120	9.65	-35.7
10	Bryan Rekar B. Rekar	5.62	25	49	.338	131	108	383	4	0	0	655.0	788	409	451	99	208	25	5	7	2,927	24	5.26	2.86	1.84	1.36	13.1	7.1	1.52	.311	6.20	116	4.97	107	10.83	-20.7
11	Ed Linke E. Linke	5.61	22	22	.500	120	43	156	13	1	6	449.0	555	280	313	28	206	5	44		2,066	11	3.13	4.13	0.76	0.56	7.6	10.0	1.69	.315	6.27	125	4.59	105	11.12	-12.4
12	Russ Van Atta R. Van Atta	5.60	33	41	.446	207	76	339	17	3	6	712.1	838	443	498	39	368	10	66		3,291	16	4.28	4.65	0.92	0.49	10.3	11.2	1.69	.315	6.29	120	4.37	97	10.59	11.8
13	Todd Van Poppel T. Van Poppel	5.58	40	52	.435	359	98	711	2	1	4	907.0	944	562	587	143	461	22	84	21	4,049	47	7.06	4.57	1.54	1.42	17.6	11.4	1.55	.295	5.82	123	5.15	112	9.37	-57.9
14	Kyle Davies K. Davies	5.57	43	65	.398	152	144	547	3	0	0	770.1	879	477	512	99	367	22	3	13	3,488	42	6.39	4.29	1.49	1.16	15.7	10.5	1.62	.318	5.98	128	4.87	114	10.27	-52.5
15	Dan Reichert D. Reichert	5.55	21	25	.457	124	51	240	1	1	2	395.1	441	244	273	43	223	23	20	9	1,799	34	5.46	5.08	1.08	0.98	13.3	12.4	1.68	.313	6.22	112	5.13	109	10.04	-16.5
16	Frankie Rodriguez F. Rodriguez	5.53	29	39	.426	184	82	371	3	0	5	654.0	737	402	444	76	282	21	31	17	2,914	29	5.11	3.88	1.32	1.05	12.7	9.7	1.56	.305	6.11	115	4.89	104	10.14	-14
17	Bert Inks B. Inks	5.52	27	46	.370	89	77	167	59	2	1	603.2	780	370	532	12	266	41	11		2,849	19	2.49	3.97	0.63	0.18	5.9	9.3	1.73	.325	7.93	126	4.55	103	11.63	-12
18	Runelvys Hernandez R. Hernandez	5.50	25	36	.410	82	82	246	1	1	0	454.2	515	278	294	61	188	20	0	1	2,025	11	4.87	3.72	1.31	1.21	12.1	9.3	1.55	.301	5.82	121	5.07	115	10.19	-32.6
19	Pat Mahomes P. Mahomes	5.47	42	39	.519	308	63	452	0	0	5	709.0	738	431	461	116	392	11	74	25	3,163	29	5.74	4.98	1.15	1.47	14.3	12.4	1.59	.284	5.85	119	5.62	124	9.37	-86.7
20	Rocky Biddle R. Biddle	5.47	20	30	.400	198	41	261	0	0	46	378.2	409	230	266	59	170	27	87	15	1,709	26	6.20	4.04	1.54	1.40	15.3	9.9	1.53	.294	6.32	121	5.23	115	9.72	-27.6
21	Mike Oquist M. Oquist	5.46	25	31	.446	133	79	351	1	0	0	555.0	623	337	348	73	243	21	13	19	2,492	14	5.69	3.94	1.44	1.18	14.1	9.8	1.56	.305	5.64	118	4.99	108	10.10	-22.8
22	Dana Eveland D. Eveland	5.46	20	28	.417	187	61	308	1	0	2	446.1	522	271	280	34	221	36	32	18	2,050	17	6.21	4.46	1.39	0.69	15.0	10.8	1.66	.336	5.65	131	4.44	106	10.53	-12.4
23	Seth McClung S. McClung	5.46	26	34	.433	177	51	314	0	0	6	430.1	425	261	275	61	254	22	44	11	1,941	23	6.57	5.31	1.24	1.28	16.2	13.1	1.58	.282	5.75	126	5.39	123	8.89	-48.9
24	Casey Fossum C. Fossum	5.45	40	53	.430	237	120	607	0	0	2	786.0	873	476	535	114	319	63	35	14	3,537	28	6.95	3.65	1.90	1.31	17.2	9.0	1.52	.312	6.13	122	4.86	110	10.00	-40.5
25	Les German L. German	5.45	34	63	.351	130	93	151	74	0	2	858.2	1,104	520	756	30	378	53	32		4,032	26	1.58	3.96	0.40	0.31	3.7	9.4	1.73	.314	7.92	120	4.98	110	11.57	-45