highest r/ip-era/ip in a season with a minimum of 100 ip after 1950

Since 1951, Matt Perisho has the most runs allowed per inning pitched - ERA per inning pitched with 100.0+ innings pitched in a season, with 0.87 in 2000.

Interpreted as:

highest r/ip-era/ip by a player in a season with a minimum of 100 ip after 1950

	NAME	R/IP-ERA/IP	IP	R	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	H	ER	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	Matt Perisho M. Perisho	0.87	105.0	99	7.37	2000	TEX	34	2	7	.222	13	74	0	0	0	136	86	20	67	6	4	3	515	4	6.34	5.74	1.10	1.71	14.4	13.0	1.93	.333	8.49	144	6.28	126	11.66	-14.7
2	Jim Abbott J. Abbott	0.85	142.0	128	7.48	1996	CAL	27	2	18	.100	23	58	1	0	0	171	118	23	78	4	2	3	654	13	3.68	4.94	0.74	1.46	8.9	11.9	1.75	.301	8.11	150	6.18	125	10.84	-19
3	Mike Moore M. Moore	0.83	132.2	118	7.53	1995	DET	25	5	15	.250	25	64	1	0	0	179	111	24	68	2	0	3	632	8	4.34	4.61	0.94	1.63	10.1	10.8	1.86	.327	8.01	158	6.07	127	12.14	-18.6
4	Brian Williams B. Williams	0.83	121.0	107	6.77	1996	DET	40	3	10	.231	17	72	2	1	2	145	91	21	85	6	17	2	579	8	5.36	6.32	0.85	1.56	12.4	14.7	1.90	.314	7.96	134	6.49	128	10.79	-18.4
5	Mike Maroth M. Maroth	0.83	116.1	103	6.89	2007	TOT	27	5	7	.417	20	51	0	0	0	168	89	26	50	5	2	1	549	2	3.95	3.87	1.02	2.01	9.3	9.1	1.87	.341	7.97	156	6.68	150	13.00	-28.8
6	Jason Bere J. Bere	0.82	137.2	120	7.19	1995	CWS	27	8	15	.348	27	110	1	0	0	151	110	21	106	6	0	6	668	8	7.19	6.93	1.04	1.37	16.5	15.9	1.87	.306	7.85	159	5.92	129	9.87	-21
7	Jeff Fassero J. Fassero	0.82	156.1	135	7.20	1999	TOT	37	5	14	.263	27	114	0	0	0	208	125	35	83	4	2	3	751	9	6.56	4.78	1.37	2.01	15.2	11.1	1.86	.336	7.77	153	6.24	133	11.97	-27.3
8	Jason Johnson J. Johnson	0.82	107.2	95	7.02	2000	BAL	25	1	10	.091	13	79	0	0	0	119	84	21	61	4	3	2	501	3	6.60	5.10	1.30	1.76	15.8	12.2	1.67	.292	7.94	149	6.00	124	9.95	-14.1
9	Darren Oliver D. Oliver	0.81	108.0	95	7.42	2000	TEX	21	2	9	.182	21	49	0	0	0	151	89	16	42	4	0	3	501	4	4.08	3.50	1.17	1.33	9.8	8.4	1.79	.346	7.92	145	5.42	109	12.58	-5.1
10	Adam Wainwright A. Wainwright	0.81	101.0	89	7.40	2023	STL	21	5	11	.313	21	55	0	0	0	151	83	20	41	1	0	0	484	1	4.90	3.65	1.34	1.78	11.4	8.5	1.90	.357	7.93	172	5.98	140	13.46	-19.5
11	Ryan Rowland-Smith R. Rowland-Smith	0.8	109.1	94	6.75	2010	SEA	27	1	10	.091	20	49	0	0	0	141	82	25	44	7	2	2	510	7	4.03	3.62	1.11	2.06	9.6	8.6	1.69	.301	7.74	174	6.55	162	11.61	-31.5
12	Jason Grimsley J. Grimsley	0.79	130.1	110	6.84	1996	CAL	35	5	7	.417	20	82	2	1	0	150	99	14	74	13	4	5	620	11	5.66	5.11	1.11	0.97	13.2	11.9	1.72	.311	7.60	137	5.30	107	10.36	-4.8
13	Jose Lima J. Lima	0.79	168.2	140	6.99	2005	KCR	32	5	16	.238	32	80	1	0	0	219	131	31	61	9	0	1	780	5	4.27	3.25	1.31	1.65	10.3	7.8	1.66	.314	7.47	156	5.70	132	11.69	-25.8
14	Andy Benes A. Benes	0.79	107.1	92	7.38	2001	STL	27	7	7	.500	19	78	0	0	0	122	88	30	61	6	3	0	500	1	6.54	5.11	1.28	2.52	15.6	12.2	1.70	.283	7.71	173	7.10	161	10.23	-32.2
15	Germán Márquez G. Márquez	0.79	126.1	106	6.70	2025	COL	26	3	16	.158	26	83	0	0	0	168	94	23	48	6	0	1	591	6	5.91	3.42	1.73	1.64	14.0	8.1	1.71	.336	7.55	141	5.46	126	11.97	-14.8
16	Craig Anderson C. Anderson	0.78	131.1	108	5.35	1962	NYM	50	3	17	.150	14	62	2	0	4	150	78	18	63	5	20	2	617	8	4.25	4.32	0.98	1.23	10.0	10.2	1.62	.281	7.40	130	5.01	125	10.28	-14
17	Jim Deshaies J. Deshaies	0.78	130.1	109	7.39	1994	MIN	25	6	12	.333	25	78	0	0	0	170	107	30	54	2	0	0	596	1	5.39	3.73	1.44	2.07	13.1	9.1	1.72	.324	7.53	151	6.21	131	11.74	-21.3
18	Ken Schrom K. Schrom	0.78	153.2	126	6.50	1987	CLE	32	6	13	.316	29	61	4	1	0	185	111	29	57	3	0	1	695	4	3.57	3.34	1.07	1.70	8.8	8.2	1.57	.286	7.38	144	5.69	128	10.84	-21
19	Mac Suzuki M. Suzuki	0.77	110.0	92	6.79	1999	TOT	38	2	5	.286	13	68	0	0	0	124	83	16	64	7	6	3	510	11	5.56	5.24	1.06	1.31	13.3	12.5	1.71	.304	7.53	140	5.71	119	10.15	-11.1
20	Greg Gohr G. Gohr	0.77	115.2	96	7.24	1996	TOT	32	5	9	.357	16	75	0	0	1	163	93	31	44	3	7	2	546	6	5.84	3.42	1.70	2.41	13.7	8.1	1.79	.336	7.47	144	6.57	130	12.68	-19
21	Dean Stone D. Stone	0.76	132.0	107	6.27	1956	WSH	41	5	7	.417	21	86	2	0	3	148	92	10	93	7	10	0	636	5	5.86	6.34	0.92	0.68	13.5	14.6	1.83	.314	7.30	151	4.32	107	10.09	-4.4
22	Julio Santana J. Santana	0.76	104.0	86	6.75	1997	TEX	30	4	6	.400	14	64	0	0	0	141	78	16	49	4	3	2	496	8	5.54	4.24	1.31	1.38	12.9	9.9	1.83	.344	7.44	142	5.40	117	12.20	-8.7
23	Colby Lewis C. Lewis	0.76	127.0	104	7.30	2003	TEX	26	10	9	.526	26	88	0	0	0	163	103	23	70	5	0	1	594	5	6.24	4.96	1.26	1.63	14.8	11.8	1.83	.343	7.37	152	5.76	125	11.55	-15.9
24	Doug Drabek D. Drabek	0.76	108.2	90	7.29	1998	BAL	23	6	11	.353	21	55	1	0	0	138	88	20	29	5	1	2	484	1	4.56	2.40	1.90	1.66	11.4	6.0	1.54	.315	7.45	162	5.45	119	11.43	-10.7
25	Joey Wentz J. Wentz	0.76	105.2	87	6.90	2023	DET	25	3	13	.188	19	98	0	0	0	131	81	25	47	0	0	0	492	2	8.35	4.00	2.09	2.13	19.9	9.6	1.68	.329	7.41	163	5.81	137	11.16	-18.6