Mark Eichhorn pitched the most innings by a relief pitcher in 1986, with 157 innings in his rookie season.

	NAME	IP	SEASON	TM	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	H/9
1	Mark Eichhorn M. Eichhorn	157.0	1986	TOR	69	14	6	.700	0	1.72	166	0	0	10	105	30	32	8	45	7	38	14	612	2	9.52	2.58	3.69	0.46	27.1	7.4	0.96	.251	1.83	6.02
2	Roger McDowell R. McDowell	128.0	1986	NYM	75	14	9	.609	0	3.02	65	0	0	22	107	43	48	4	42	3	52	5	524	3	4.57	2.95	1.55	0.28	12.4	8.0	1.16	.251	3.38	7.52
3	Ron Robinson R. Robinson	116.2	1986	CIN	70	10	3	.769	0	3.24	117	0	0	14	110	42	44	10	43	2	32	8	487	3	9.03	3.32	2.72	0.77	24.0	8.8	1.31	.317	3.39	8.49
4	Greg Harris G. Harris	111.1	1986	TEX	73	10	8	.556	0	2.83	95	0	0	20	103	35	40	12	42	1	63	6	462	2	7.68	3.40	2.26	0.97	20.6	9.1	1.30	.292	3.23	8.33
5	Kent Tekulve K. Tekulve	110.0	1986	PHI	73	11	5	.688	0	2.54	57	0	0	4	99	31	35	2	25	0	34	10	446	3	4.66	2.05	2.28	0.16	12.8	5.6	1.13	.268	2.86	8.10
6	Steve Farr S. Farr	109.1	1986	KCR	56	8	4	.667	0	3.13	83	0	0	8	90	38	39	10	39	4	33	8	443	4	6.83	3.21	2.13	0.82	18.7	8.8	1.18	.261	3.21	7.41
7	Gene Nelson G. Nelson	108.0	1986	CWS	53	6	5	.545	0	3.75	67	0	0	6	111	45	48	7	37	3	26	5	459	3	5.58	3.08	1.81	0.58	14.6	8.1	1.37	.301	4.00	9.25
8	Craig Lefferts C. Lefferts	107.2	1986	SDP	83	9	8	.529	0	3.09	72	0	0	4	98	37	41	7	44	1	36	11	446	1	6.02	3.68	1.64	0.59	16.1	9.9	1.32	.283	3.43	8.19
9	Dave Righetti D. Righetti	106.2	1986	NYY	74	8	8	.500	0	2.45	83	0	0	46	88	29	31	4	35	2	68	7	435	1	7.00	2.95	2.37	0.34	19.1	8.0	1.15	.270	2.62	7.43
10	Bud Black B. Black	104.0	1986	KCR	52	4	7	.364	0	2.34	56	0	0	9	73	27	33	9	39	7	26	5	422	2	4.85	3.38	1.44	0.78	13.3	9.2	1.08	.206	2.86	6.32
11	Todd Worrell T. Worrell	103.2	1986	STL	74	9	10	.474	0	2.08	73	0	0	36	86	24	29	9	41	1	60	16	430	1	6.34	3.56	1.78	0.78	17.0	9.5	1.23	.252	2.52	7.47
12	Rich Bordi R. Bordi	102.0	1986	BAL	51	6	3	.667	0	4.41	79	0	0	3	100	50	53	12	41	3	22	5	443	1	6.97	3.62	1.93	1.06	17.8	9.3	1.38	.286	4.68	8.82
13	John Franco J. Franco	101.0	1986	CIN	74	6	6	.500	0	2.94	84	0	0	29	90	33	40	7	44	2	52	12	429	4	7.49	3.92	1.91	0.62	19.6	10.3	1.33	.284	3.56	8.02
14	Jeff Robinson J. Robinson	100.1	1986	SFG	63	6	3	.667	0	3.05	89	0	0	8	86	34	41	7	32	1	22	7	413	11	7.98	2.87	2.78	0.63	21.5	7.7	1.18	.278	3.68	7.71
15	Jeff Dedmon J. Dedmon	99.2	1986	ATL	57	6	6	.500	0	2.98	58	0	0	3	90	33	43	8	39	4	22	5	424	3	5.24	3.52	1.49	0.72	13.7	9.2	1.29	.260	3.88	8.13
16	Gene Walter G. Walter	98.0	1986	SDP	57	2	2	.500	0	3.86	84	0	0	1	89	42	47	7	49	4	19	7	422	6	7.71	4.50	1.71	0.64	19.9	11.6	1.41	.295	4.32	8.17
17	Mitch Williams M. Williams	98.0	1986	TEX	80	8	6	.571	0	3.58	90	0	0	8	69	39	39	8	79	11	38	8	435	5	8.27	7.26	1.14	0.73	20.7	18.2	1.51	.247	3.58	6.34
18	Bill Dawley B. Dawley	97.2	1986	CWS	46	0	7	.000	0	3.32	66	0	0	2	91	36	38	10	28	1	23	3	405	5	6.08	2.58	2.36	0.92	16.3	6.9	1.22	.270	3.50	8.39
19	Ken Howell K. Howell	97.2	1986	LAD	62	6	12	.333	0	3.87	104	0	0	12	86	42	48	7	63	3	36	9	437	4	9.58	5.81	1.65	0.65	23.8	14.4	1.53	.304	4.42	7.92
20	Keith Atherton K. Atherton	97.0	1986	TOT	60	6	10	.375	0	4.08	67	0	0	10	100	44	47	11	46	1	36	4	431	2	6.22	4.27	1.46	1.02	15.5	10.7	1.51	.291	4.36	9.28
21	Brian Fisher B. Fisher	96.2	1986	NYY	62	9	5	.643	0	4.93	67	0	0	6	105	53	61	14	37	1	26	2	424	2	6.24	3.44	1.81	1.30	15.8	8.7	1.47	.298	5.68	9.78
22	Tim Stoddard T. Stoddard	94.2	1986	TOT	54	5	4	.556	0	3.80	81	0	0	0	74	40	43	12	57	0	15	9	411	5	7.70	5.42	1.42	1.14	19.7	13.9	1.38	.238	4.09	7.04
23	Mark Huismann M. Huismann	94.1	1986	TOT	45	3	3	.500	0	3.43	70	0	0	5	91	36	41	16	25	1	19	0	392	5	6.68	2.39	2.80	1.53	17.9	6.4	1.23	.268	3.91	8.68
24	Charlie Kerfeld C. Kerfeld	93.2	1986	HOU	61	11	2	.846	0	2.59	77	0	0	7	71	27	32	5	42	2	29	3	390	7	7.40	4.04	1.83	0.48	19.7	10.8	1.21	.250	3.07	6.82
25	Lance McCullers L. McCullers	93.0	1986	SDP	63	9	6	.600	0	2.13	69	0	0	5	63	22	24	8	38	2	29	7	364	5	6.68	3.68	1.82	0.77	19.0	10.4	1.09	.223	2.32	6.10