highest era+ by an active starter all-time with 300 ip

Ryan Feltner has the highest career ERA by an active starting pitcher when pitching at least 300 innings, with an ERA of 5.24.

Interpreted as:

highest era+ by an active starter all-time with 300 or more ip

	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	H/9
1	Ryan Feltner R. Feltner	5.24	336.1	67	9	26	.257	67	289	0	0	0	351	196	213	45	130	15	0	0	1,474	7	7.73	3.48	2.22	1.20	19.6	8.8	1.43	.308	5.70	9.39
2	Brandon Pfaadt B. Pfaadt	5.14	352.0	66	22	23	.489	66	340	0	0	0	377	201	213	59	87	16	0	2	1,511	3	8.69	2.22	3.91	1.51	22.5	5.8	1.32	.315	5.45	9.64
3	Antonio Senzatela A. Senzatela	5.13	723.1	137	40	53	.430	137	459	1	0	0	865	412	440	93	227	27	0	8	3,180	15	5.71	2.82	2.02	1.16	14.4	7.1	1.51	.325	5.47	10.76
4	JT Brubaker	5.07	310.2	61	9	28	.243	61	317	0	0	0	324	175	187	51	108	20	0	1	1,369	13	9.18	3.13	2.94	1.48	23.2	7.9	1.39	.313	5.42	9.39
5	Luke Weaver L. Weaver	5.05	520.0	106	25	42	.373	106	521	0	0	0	566	292	310	86	164	12	0	7	2,274	7	9.02	2.84	3.18	1.49	22.9	7.2	1.40	.322	5.37	9.80
6	Chris Flexen C. Flexen	4.98	574.2	110	29	44	.397	110	411	0	0	0	642	318	332	89	207	15	0	4	2,515	18	6.44	3.24	1.99	1.39	16.3	8.2	1.48	.308	5.20	10.05
7	Graham Ashcraft G. Ashcraft	4.91	328.0	60	17	20	.459	60	239	0	0	0	356	179	189	45	109	24	0	1	1,438	16	6.56	2.99	2.19	1.23	16.6	7.6	1.42	.305	5.19	9.77
8	Austin Gomber A. Gomber	4.91	594.1	115	34	40	.459	115	459	0	0	0	638	324	339	97	178	12	0	7	2,544	16	6.95	2.70	2.58	1.47	18.0	7.0	1.37	.301	5.13	9.66
9	Reid Detmers R. Detmers	4.90	385.2	75	16	27	.372	75	418	1	1	0	375	210	221	55	155	25	0	4	1,675	14	9.75	3.62	2.70	1.28	25.0	9.3	1.37	.313	5.16	8.75
10	Colin Rea C. Rea	4.82	463.1	88	25	22	.532	88	385	0	0	0	465	248	263	80	143	22	0	5	1,983	5	7.48	2.78	2.69	1.55	19.4	7.2	1.31	.285	5.11	9.03
11	Josiah Gray J. Gray	4.80	382.2	73	17	27	.386	73	375	0	0	0	362	204	209	78	183	19	0	5	1,681	23	8.82	4.30	2.05	1.83	22.3	10.9	1.42	.277	4.92	8.51
12	Erick Fedde E. Fedde	4.74	689.2	135	32	48	.400	135	549	1	1	0	711	363	379	106	266	17	0	13	2,987	13	7.16	3.47	2.06	1.38	18.4	8.9	1.42	.295	4.95	9.28
13	Paul Blackburn P. Blackburn	4.72	432.2	85	22	28	.440	85	334	0	0	0	466	227	236	55	136	18	0	3	1,864	7	6.95	2.83	2.46	1.14	17.9	7.3	1.39	.311	4.91	9.69
14	Matthew Boyd M. Boyd	4.71	979.0	184	51	72	.415	184	955	2	1	0	970	512	548	167	301	48	0	4	4,182	31	8.78	2.77	3.17	1.54	22.8	7.2	1.30	.296	5.04	8.92
15	Kutter Crawford K. Crawford	4.69	354.2	69	15	29	.341	69	349	0	0	0	320	185	195	59	105	16	0	0	1,477	10	8.86	2.66	3.32	1.50	23.6	7.1	1.20	.275	4.95	8.12
16	Nick Pivetta N. Pivetta	4.69	1026.1	194	58	67	.464	194	1,115	2	0	0	976	535	551	171	364	28	0	3	4,353	46	9.78	3.19	3.06	1.50	25.6	8.4	1.31	.301	4.83	8.56
17	Taj Bradley T. Bradley	4.67	327.1	62	18	24	.429	62	359	0	0	0	300	170	187	56	121	8	0	0	1,394	10	9.87	3.33	2.97	1.54	25.8	8.7	1.29	.287	5.14	8.25
18	Ryan Yarbrough R. Yarbrough	4.65	404.1	76	17	25	.405	76	312	1	0	0	405	209	225	55	79	30	0	4	1,690	5	6.94	1.76	3.95	1.22	18.5	4.7	1.20	.288	5.01	9.01
19	Ryne Nelson R. Nelson	4.65	329.0	62	20	16	.556	62	249	0	0	0	332	170	176	47	95	8	0	3	1,383	9	6.81	2.60	2.62	1.29	18.0	6.9	1.30	.290	4.81	9.08
20	JP Sears	4.60	486.2	91	26	35	.426	91	397	0	0	0	483	249	258	87	140	36	0	3	2,069	3	7.34	2.59	2.84	1.61	19.2	6.8	1.28	.281	4.77	8.93
21	Griffin Canning G. Canning	4.60	567.0	110	30	36	.455	110	533	0	0	0	547	290	306	93	215	21	0	1	2,430	29	8.46	3.41	2.48	1.48	21.9	8.8	1.34	.290	4.86	8.68
22	Nick Martinez N. Martinez	4.56	640.0	118	28	45	.384	118	425	1	0	0	665	324	353	99	208	31	0	4	2,752	26	5.98	2.93	2.04	1.39	15.4	7.6	1.36	.285	4.96	9.35
23	Patrick Corbin P. Corbin	4.55	1931.0	338	106	136	.438	338	1,748	7	2	0	2,068	976	1,048	272	587	49	0	22	8,316	62	8.15	2.74	2.98	1.27	21.0	7.1	1.37	.317	4.88	9.64
24	Mitch Keller M. Keller	4.54	789.2	147	36	60	.375	147	754	2	1	0	826	398	425	88	269	51	0	2	3,437	16	8.59	3.07	2.80	1.00	21.9	7.8	1.39	.324	4.84	9.41
25	Jakob Junis J. Junis	4.53	621.2	116	29	39	.426	116	557	1	0	0	639	313	337	102	159	41	0	3	2,657	22	8.06	2.30	3.50	1.48	21.0	6.0	1.28	.299	4.88	9.25