Kent Tekulve has pitched the most career innings when he didn't start, with 1436.2 innings.

	NAME	IP	GS	G	W	L	W%	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	Kent Tekulve K. Tekulve	1436.2	0	1,050	94	90	.511	2.85	779	0	0	184	1,305	455	526	63	491	17	638	179	6,001	23	4.88	3.08	1.59	0.39	13.0	8.2	1.25	.267	3.30	77	3.25	88	8.18	71.1
2	Sparky Lyle S. Lyle	1390.1	0	899	99	76	.566	2.88	873	0	0	238	1,292	445	519	84	481	14	634	81	5,794	66	5.65	3.11	1.81	0.54	15.1	8.3	1.28	.278	3.36	79	3.19	86	8.36	81.4
3	John Franco J. Franco	1245.2	0	1,119	90	87	.508	2.89	975	0	0	424	1,166	400	466	81	495	22	774	78	5,312	54	7.04	3.58	1.97	0.59	18.4	9.3	1.33	.290	3.37	73	3.44	86	8.42	76
4	Jeff Reardon J. Reardon	1132.1	0	880	73	77	.487	3.16	877	0	0	367	1,000	397	426	109	358	27	695	65	4,720	20	6.97	2.85	2.45	0.87	18.6	7.6	1.20	.266	3.39	82	3.49	92	7.95	38.7
5	Trevor Hoffman T. Hoffman	1089.1	0	1,035	61	75	.449	2.87	1,133	0	0	601	846	347	378	100	307	9	856	58	4,388	49	9.36	2.54	3.69	0.83	25.8	7.0	1.06	.263	3.12	71	3.07	73	6.99	143.1
6	Dan Quisenberry D. Quisenberry	1043.1	0	674	56	46	.549	2.76	379	0	0	244	1,064	320	356	59	162	7	553	70	4,247	4	3.27	1.40	2.34	0.51	8.9	3.8	1.18	.276	3.07	69	3.23	82	9.18	81.6
7	Bruce Sutter B. Sutter	1042.0	0	661	68	71	.489	2.83	861	0	0	300	879	328	370	77	309	13	512	83	4,251	37	7.44	2.67	2.79	0.67	20.3	7.3	1.14	.268	3.20	75	2.93	80	7.59	88
8	Francisco Rodriguez F. Rodriguez	976.0	0	948	52	53	.495	2.86	1,142	0	0	437	738	310	336	98	389	17	677	42	4,011	68	10.53	3.59	2.94	0.90	28.5	9.7	1.15	.271	3.10	69	3.30	79	6.81	97
9	Fernando Rodney F. Rodney	933.0	0	951	48	71	.403	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
10	Billy Wagner B. Wagner	903.0	0	853	47	40	.540	2.31	1,196	0	0	422	601	232	262	82	300	33	703	26	3,600	43	11.92	2.99	3.99	0.82	33.2	8.3	1.00	.261	2.61	54	2.72	63	5.99	159
11	Bob Locker B. Locker	879.0	0	576	57	39	.594	2.75	577	0	0	95	776	269	329	40	257	36	288	80	3,643	37	5.91	2.63	2.25	0.41	15.8	7.1	1.18	.269	3.37	82	2.79	80	7.95	68.1
12	Kenley Jansen K. Jansen	878.1	0	883	49	37	.570	2.60	1,230	0	0	453	585	254	272	83	265	31	662	18	3,489	21	12.60	2.72	4.64	0.85	35.3	7.6	0.97	.267	2.79	66	2.57	63	5.99	143.4
13	Steve Reed S. Reed	870.2	0	833	49	44	.527	3.63	630	0	0	18	811	351	384	107	285	61	197	46	3,662	11	6.51	2.95	2.21	1.11	17.2	7.8	1.26	.273	3.97	77	4.41	97	8.38	12.6
14	Guillermo Mota G. Mota	856.2	0	743	39	45	.464	3.94	696	0	0	10	762	375	396	90	331	24	212	50	3,604	32	7.31	3.48	2.10	0.95	19.3	9.2	1.28	.273	4.16	96	4.05	96	8.01	17.4
15	Francisco Cordero F. Cordero	824.2	0	800	47	53	.470	3.38	796	0	0	329	751	310	342	64	375	27	575	30	3,551	37	8.69	4.09	2.12	0.70	22.4	10.6	1.37	.300	3.73	75	3.62	81	8.20	76.4
16	Craig Kimbrel C. Kimbrel	809.2	0	837	56	47	.544	2.59	1,265	0	0	440	482	233	259	73	339	40	651	11	3,257	70	14.06	3.77	3.73	0.81	38.8	10.4	1.01	.266	2.88	63	2.58	63	5.36	131.9
17	Chad Qualls C. Qualls	807.1	0	844	52	48	.520	3.89	624	0	0	74	819	349	382	83	211	32	274	42	3,397	28	6.96	2.35	2.96	0.93	18.4	6.2	1.28	.301	4.26	94	3.79	91	9.13	34.9
18	Tom Henke T. Henke	789.2	0	642	41	42	.494	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
19	Bob Howry B. Howry	787.2	0	769	45	52	.464	3.84	653	0	0	66	731	336	366	93	253	29	295	42	3,321	24	7.46	2.89	2.58	1.06	19.7	7.6	1.25	.278	4.18	85	4.04	90	8.35	39.9
20	Jeff Nelson J. Nelson	784.2	0	798	48	45	.516	3.41	829	0	0	33	633	297	329	55	428	64	237	59	3,402	36	9.51	4.91	1.94	0.63	24.4	12.6	1.35	.285	3.77	76	3.72	84	7.26	67.2
21	Armando Benitez A. Benitez	779.0	0	762	40	47	.460	3.13	946	0	0	289	545	271	296	95	403	16	527	32	3,253	18	10.93	4.66	2.35	1.10	29.1	12.4	1.22	.251	3.42	72	3.86	88	6.30	48.8
22	Aroldis Chapman A. Chapman	773.1	0	811	57	45	.559	2.62	1,266	0	0	340	455	225	249	53	398	33	528	7	3,166	82	14.73	4.63	3.18	0.62	40.0	12.6	1.10	.284	2.90	64	2.42	58	5.30	146.3
23	Rod Beck R. Beck	768.0	0	704	38	45	.458	3.30	644	0	0	286	703	282	308	97	191	20	519	33	3,170	23	7.55	2.24	3.37	1.14	20.3	6.0	1.16	.273	3.61	81	3.82	91	8.24	27.4
24	Joe Smith J. Smith	762.1	0	866	55	34	.618	3.14	666	0	0	30	653	266	289	66	254	40	176	31	3,150	19	7.86	3.00	2.62	0.78	21.1	8.1	1.19	.276	3.41	77	3.65	89	7.71	39
25	Joe Boever J. Boever	754.1	0	516	34	45	.430	3.93	541	0	0	49	751	329	362	75	343	16	257	70	3,301	30	6.45	4.09	1.58	0.89	16.4	10.4	1.45	.291	4.32	96	4.19	103	8.96	-12.1