most innings pitched per plate appearances in a career, minimum of 100 innings pitched

Jack Morris has the most career innings pitched per plate appearance when pitching at least 100 innings, with 3,824.

Interpreted as:

most innings pitched per plate appearances by a player in a career, minimum of 100 innings pitched

	NAME	IP/PA	IP	PA	G	W	L	W%	GS	ERA	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	Jack Morris J. Morris	3,824	3824.0	1	549	254	186	.577	527	3.90	2,478	175	28	0	3,567	1,657	1,815	389	1,390	58	10	99	16,120	206	5.83	3.27	1.78	0.92	15.4	8.6	1.30	.269	4.27	96	3.93	95	8.40	93
2	Mike Moore M. Moore	2,831.67	2831.2	1	450	161	176	.478	440	4.39	1,667	79	16	2	2,858	1,381	1,516	291	1,156	55	6	61	12,203	135	5.30	3.67	1.44	0.92	13.7	9.5	1.42	.284	4.82	105	4.26	101	9.08	-13.9
3	Dave Stieb D. Stieb	1,447.67	2895.1	2	443	176	137	.562	412	3.44	1,669	103	30	3	2,572	1,106	1,225	225	1,034	129	14	36	12,072	51	5.19	3.21	1.61	0.70	13.8	8.6	1.25	.260	3.81	82	3.81	93	7.99	86.8
4	Rick Waits R. Waits	1,427	1427.0	1	317	79	92	.462	190	4.25	659	47	10	8	1,514	674	741	110	568	11	45	34	6,152	37	4.16	3.58	1.16	0.69	10.7	9.2	1.46	.292	4.67	108	3.97	100	9.55	-0.1
5	Ben McDonald B. McDonald	1,291.33	1291.1	1	211	78	70	.527	198	3.91	894	24	6	0	1,186	561	606	138	437	31	5	18	5,408	33	6.23	3.05	2.05	0.96	16.5	8.1	1.26	.268	4.22	89	4.07	93	8.27	47.2
6	Mike Norris M. Norris	1,124.33	1124.1	1	201	58	59	.496	157	3.89	636	52	7	0	972	486	542	108	499	45	16	16	4,797	53	5.09	3.99	1.27	0.86	13.3	10.4	1.31	.246	4.34	104	4.26	109	7.78	-42.9
7	Bill Travers B. Travers	1,120.67	1120.2	1	205	65	71	.478	168	4.10	488	46	10	1	1,139	511	575	134	415	44	16	22	4,838	44	3.92	3.33	1.18	1.08	10.1	8.6	1.39	.268	4.62	107	4.57	120	9.15	-98.1
8	Curt Young C. Young	1,107	1107.0	1	251	69	53	.566	162	4.31	536	15	3	0	1,133	530	581	147	366	33	18	11	4,731	26	4.36	2.98	1.46	1.20	11.3	7.7	1.35	.270	4.72	111	4.63	117	9.21	-85.1
9	Gene Nelson G. Nelson	1,080	1080.0	1	493	53	64	.453	68	4.13	655	6	1	28	1,061	496	537	117	418	33	153	32	4,652	46	5.46	3.48	1.57	0.97	14.1	9.0	1.37	.275	4.47	103	4.22	105	8.84	-20.9
10	Tom Gordon T. Gordon	1,054	2108.0	2	890	138	126	.523	203	3.96	1,928	18	4	158	1,889	927	1,016	176	977	38	347	57	9,058	112	8.23	4.17	1.97	0.75	21.3	10.8	1.36	.288	4.34	89	3.70	86	8.06	144.4
11	Eddie Guardado E. Guardado	944.67	944.2	1	908	46	61	.430	25	4.31	798	0	0	187	894	452	476	138	348	16	401	39	4,011	25	7.60	3.32	2.29	1.31	19.9	8.7	1.31	.279	4.53	92	4.44	98	8.52	7
12	Fernando Rodney F. Rodney	933	933.0	1	951	48	71	.403	0	3.80	943	0	0	327	817	394	433	73	464	52	590	38	4,064	65	9.10	4.48	2.03	0.70	23.2	11.4	1.37	.294	4.18	91	3.76	90	7.88	43.6
13	David Robertson D. Robertson	894.33	894.1	1	881	68	46	.596	1	2.93	1,176	0	0	179	674	291	315	81	365	25	358	38	3,690	57	11.83	3.67	3.22	0.82	31.9	9.9	1.16	.290	3.17	70	2.98	70	6.78	122.3
14	Jimmy Key J. Key	863.89	2591.2	3	470	186	117	.614	389	3.51	1,538	34	13	10	2,518	1,010	1,104	254	668	38	28	29	10,719	50	5.34	2.32	2.30	0.88	14.3	6.2	1.23	.275	3.83	82	3.79	89	8.74	135.4
15	Allan Anderson A. Anderson	818.67	818.2	1	148	49	54	.476	128	4.11	339	15	3	0	901	374	424	87	211	25	7	12	3,474	15	3.73	2.32	1.61	0.96	9.8	6.1	1.36	.289	4.66	99	4.20	106	9.91	-24
16	Tom Henke T. Henke	789.67	789.2	1	642	41	42	.494	0	2.67	861	0	0	311	607	234	252	64	255	9	548	29	3,194	30	9.81	2.91	3.38	0.73	27.0	8.0	1.09	.271	2.87	64	2.71	66	6.92	123.5
17	Eduardo Rodriguez E. Rodriguez	734	734.0	1	264	42	36	.538	39	3.89	430	7	1	32	681	317	348	65	323	23	141	40	3,164	24	5.27	3.96	1.33	0.80	13.6	10.2	1.37	.265	4.27	102	4.02	107	8.35	-21.1
18	Mike Henneman M. Henneman	732.67	732.2	1	561	57	42	.576	0	3.21	533	0	0	193	686	261	301	47	271	19	432	82	3,112	48	6.55	3.33	1.97	0.58	17.1	8.7	1.31	.285	3.70	76	3.44	81	8.43	64.5
19	Shigetoshi Hasegawa S. Hasegawa	720.33	720.1	1	517	45	43	.511	8	3.70	447	0	0	33	691	296	323	76	265	18	191	37	3,031	16	5.58	3.31	1.69	0.95	14.7	8.7	1.33	.276	4.04	81	4.38	96	8.63	13.4
20	Rafael Betancourt R. Betancourt	685.67	685.2	1	680	38	37	.507	0	3.36	724	0	0	75	596	256	274	71	164	1	241	40	2,787	17	9.50	2.15	4.41	0.93	26.0	5.9	1.11	.287	3.60	76	3.04	71	7.82	92
21	Duane Ward D. Ward	666.67	666.2	1	462	32	37	.464	2	3.28	679	0	0	121	551	243	268	32	286	17	272	39	2,783	51	9.17	3.86	2.37	0.43	24.4	10.3	1.26	.293	3.62	81	2.76	69	7.44	93.7
22	Matt Thornton M. Thornton	662.67	662.2	1	748	36	46	.439	1	3.41	642	0	0	23	594	251	273	52	251	20	170	37	2,799	28	8.72	3.41	2.56	0.71	22.9	9.0	1.28	.296	3.71	79	3.40	79	8.07	66.8
23	Bob Wells B. Wells	635.67	635.2	1	414	40	28	.588	21	5.03	417	1	1	15	688	355	378	101	200	35	111	19	2,777	8	5.90	2.83	2.09	1.43	15.0	7.2	1.40	.290	5.35	105	4.97	107	9.74	-21.7
24	Brian Fuentes B. Fuentes	613.33	613.1	1	650	26	43	.377	0	3.62	639	0	0	204	515	247	267	64	258	52	381	25	2,622	32	9.38	3.79	2.48	0.94	24.4	9.8	1.26	.280	3.92	81	3.86	88	7.56	37.4
25	Darren O'Day D. O'Day	609	609.0	1	644	42	21	.667	0	2.59	637	0	0	21	458	175	189	64	172	50	155	24	2,461	3	9.41	2.54	3.70	0.95	25.9	7.0	1.03	.256	2.79	61	3.48	82	6.77	52.4