Ren Deagle has pitched the most career innings when allowing exactly 0 HR, with 269.1 innings.

Interpreted as:

most ip without a hr by a player in history

	NAME	IP	HR	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Ren Deagle R. Deagle	269.1	0	34	17	15	.531	34	2.74	83	29	2	0	255	82	147	56		0	1,116	20	2.77	1.87	1.48	0.00	7.4	5.0	1.15	.263	4.91	84	3.36	104	8.52	-4.1
2	John Eubank J. Eubank	233.1	0	42	8	13	.381	22	3.12	56	11	2	2	248	81	121	58	9	19	969	6	2.16	2.24	0.97	0.00	5.8	6.0	1.31	.293	4.67	116	2.70	105	9.57	-3
3	Rudy Kallio R. Kallio	222.1	0	49	9	17	.346	27	4.17	75	10	2	1	234	103	124	93	3	17	970	10	3.04	3.76	0.81	0.00	7.7	9.6	1.47	.293	5.02	139	2.95	98	9.47	1.3
4	Joe Blong J. Blong	191.1	0	26	10	9	.526	21	2.68	51	17	0	0	205	57	121	39		5	827	29	2.40	1.83	1.31	0.00	6.2	4.7	1.28		5.69	104	2.90	113	9.64	-13
5	Elmer Koestner E. Koestner	169.2	0	36	5	10	.333	14	3.18	56	8	1	2	169	60	96	76	6	20	695	9	2.97	4.03	0.74	0.00	8.1	10.9	1.44	.303	5.09	122	3.13	116	8.96	-7.7
6	Rube Kisinger R. Kisinger	162.0	0	21	9	12	.429	19	3.00	40	18	2	0	166	54	78	41	5	2	673	1	2.22	2.28	0.98	0.00	5.9	6.1	1.28	.283	4.33	96	3.09	99	9.22	0.5
7	Bill McGunnigle B. McGunnigle	157.0	0	19	11	8	.579	18	2.81	65	17	3	0	156	49	85	24		1	658	3	3.73	1.38	2.71	0.00	9.9	3.6	1.15		4.87	112	2.32	93	8.94	4.3
8	Deacon Jones D. Jones	151.0	0	46	7	6	.538	10	2.98	45	3	0	0	136	50	72	69	7	18	623	3	2.68	4.11	0.65	0.00	7.2	11.1	1.36	.271	4.29	109	3.16	112	8.11	-5.5
9	Fred Link F. Link	144.2	0	25	5	7	.417	16	3.30	60	6	1	1	145	53	63	63	8	7	602	4	3.73	3.92	0.95	0.00	10.0	10.5	1.44	.308	3.92	129	2.96	113	9.02	-5.1
10	Jake Aydelott J. Aydelott	124.0	0	14	5	9	.357	14	4.79	35	13	0	0	150	66	111	41		0	568	10	2.54	2.98	0.85	0.00	6.2	7.2	1.54	.305	8.06	146	3.68	113	10.89	-5.7
11	Bert Maxwell B. Maxwell	123.1	0	21	4	7	.364	12	4.16	35	9	1	1	144	57	73	42	5	5	535	1	2.55	3.06	0.83	0.00	6.5	7.9	1.51	.318	5.33	142	3.06	104	10.51	-0.7
12	Wiley Taylor W. Taylor	120.2	0	27	2	10	.167	17	4.10	45	4	1	0	113	55	66	65	3	5	521	8	3.36	4.85	0.69	0.00	8.6	12.5	1.48	.277	4.92	140	3.53	119	8.43	-8.1
13	Billy Gumbert B. Gumbert	119.2	0	17	7	8	.467	14	4.06	21	10	0	0	128	54	92	59	9	3	552	2	1.58	4.44	0.36	0.00	3.8	10.7	1.56	.276	6.92	124	4.11	121	9.63	-12.3
14	Doc Amole D. Amole	119.1	0	18	4	10	.286	12	4.75	30	10	0	0	150	63	91	39	12	5	544	4	2.26	2.94	0.77	0.00	5.5	7.2	1.58	.324	6.86	124	3.87	97	11.31	2.2
15	George Sisler G. Sisler	111.0	0	24	5	6	.455	12	2.35	63	9	1	3	91	29	36	52	6	8	453	2	5.11	4.22	1.21	0.00	13.9	11.5	1.29	.274	2.92	83	2.84	98	7.38	0.7
16	Chick Brandom C. Brandom	108.0	0	32	3	1	.750	4	2.08	44	2	0	3	101	25	53	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
17	John Valentine J. Valentine	102.0	0	13	2	10	.167	12	3.53	13	11	0	0	130	40	80	17		1	463	1	1.15	1.50	0.76	0.00	2.8	3.7	1.44		7.06	113	3.50	112	11.47	-6
18	Forrest More F. More	98.2	0	25	2	10	.167	6	4.74	27	4	0	0	95	52	80	40	7	14	407	5	2.46	3.65	0.68	0.00	6.6	9.8	1.37	.285	7.30	179	3.10	114	8.67	-3.7
19	Patrick Horan P. Horan	98.0	0	13	3	6	.333	10	3.49	55	9	0	0	94	38	73	24		3	423	11	5.05	2.20	2.29	0.00	13.0	5.7	1.20		6.70	117	2.89	111	8.63	-3.8
20	Lefty James L. James	95.2	0	31	2	7	.222	11	3.39	36	4	0	1	94	36	59	45	7	10	403	1	3.39	4.23	0.80	0.00	8.9	11.2	1.45	.298	5.55	114	3.39	113	8.84	-3.6
21	Jim St. Vrain J. St. Vrain	95.0	0	12	4	6	.400	11	2.08	51	10	1	0	88	22	36	25	5	1	388	3	4.83	2.37	2.04	0.00	13.1	6.4	1.19	.287	3.41	78	2.54	91	8.34	2.3
22	Harry Fanwell H. Fanwell	92.0	0	17	2	9	.182	11	3.62	30	5	1	0	87	37	52	38	6	5	378	8	2.93	3.72	0.79	0.00	7.9	10.1	1.36	.286	5.09	141	3.10	117	8.51	-4.4
23	Ross Reynolds R. Reynolds	89.1	0	30	5	4	.556	9	2.62	33	3	1	0	79	26	35	44	7	13	366	1	3.32	4.43	0.75	0.00	9.0	12.0	1.38	.280	3.53	92	3.41	117	7.96	-4.7
24	Gene Woodburn G. Woodburn	86.2	0	31	2	9	.182	11	5.50	48	2	0	0	82	53	80	82	10	8	421	6	4.98	8.52	0.59	0.00	11.4	19.5	1.89	.292	8.31	164	4.89	140	8.52	-13.8
25	John Raleigh J. Raleigh	85.2	0	18	1	10	.091	11	4.10	28	3	0	0	93	39	47	21	3	3	344	2	2.94	2.21	1.33	0.00	8.1	6.1	1.33	.318	4.94	157	2.41	91	9.77	2.2