Mariano Rivera has the most career wins by a relief pitcher in the postseason, with 8 wins.

	NAME	W	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	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	Mariano Rivera M. Rivera	8	1	.889	96	0	0.70	110	0	0	42	141.0	86	11	13	2	21	3	78	4	527	3	7.02	1.34	5.24	0.13	20.9	4.0	0.76	.215	0.83	5.49
2	David Robertson D. Robertson	6	0	1.000	42	0	3.04	57	0	0	1	47.1	37	16	16	6	16	1	11	3	193	3	10.84	3.04	3.56	1.14	29.5	8.3	1.12	.274	3.04	7.04
3	Ryan Madson R. Madson	6	1	.857	57	0	2.73	70	0	0	2	56.0	57	17	17	7	18	2	11	4	241	4	11.25	2.89	3.89	1.13	29.0	7.5	1.34	.347	2.73	9.16
4	Julio Urías J. Urías	5	1	.833	17	0	2.37	28	0	0	1	30.1	19	8	9	2	4	0	4	0	113	1	8.31	1.19	7.00	0.59	24.8	3.5	0.76	.215	2.67	5.64
5	Francisco Rodriguez F. Rodriguez	5	4	.556	26	0	2.95	49	0	0	3	36.2	32	12	15	5	18	1	8	2	158	5	12.03	4.42	2.72	1.23	31.0	11.4	1.36	.318	3.68	7.85
6	Mike Stanton M. Stanton	5	2	.714	53	0	2.10	47	0	0	1	55.2	43	13	15	1	21	0	15	9	222	2	7.60	3.40	2.24	0.16	21.2	9.5	1.15	.275	2.43	6.95
7	Ryne Stanek R. Stanek	4	0	1.000	30	0	2.89	29	0	0	0	28.0	14	9	9	4	9	1	10	0	106	1	9.32	2.89	3.22	1.29	27.4	8.5	0.82	.159	2.89	4.50
8	Tyler Matzek T. Matzek	4	0	1.000	20	0	1.48	38	0	0	0	24.1	16	4	4	1	7	0	1	1	94	1	14.05	2.59	5.43	0.37	40.4	7.4	0.95	.313	1.48	5.92
9	Will Smith W. Smith	4	2	.667	25	0	2.91	20	0	0	6	21.2	11	7	8	2	9	1	11	0	84	0	8.31	3.74	2.22	0.83	23.8	10.7	0.92	.173	3.32	4.57
10	Blake Treinen B. Treinen	4	3	.571	33	0	4.03	42	0	0	4	38.0	32	17	17	3	11	3	6	2	159	2	9.95	2.61	3.82	0.71	26.4	6.9	1.13	.290	4.03	7.58
11	Joe Kelly J. Kelly	4	2	.667	36	0	2.63	37	0	0	1	37.2	32	11	12	1	13	1	4	1	158	5	8.84	3.11	2.85	0.24	23.4	8.2	1.19	.292	2.87	7.65
12	Lance Lynn L. Lynn	4	1	.800	19	0	4.95	16	0	0	0	20.0	21	11	11	5	12	0	3	3	88	0	7.20	5.40	1.33	2.25	18.2	13.6	1.65	.291	4.95	9.45
13	Duane Ward D. Ward	4	1	.800	19	0	4.74	34	0	0	5	24.2	24	13	14	3	10	0	11	0	106	2	12.41	3.65	3.40	1.09	32.1	9.4	1.38	.356	5.11	8.76
14	Alejandro Pena A. Pena	4	3	.571	23	0	2.03	28	0	0	4	31.0	23	7	7	2	14	1	10	6	128	5	8.13	4.06	2.00	0.58	21.9	10.9	1.19	.253	2.03	6.68
15	Rawly Eastwick R. Eastwick	4	0	1.000	10	0	4.02	7	0	0	2	15.2	18	7	8	3	7	1	7	1	73	2	4.02	4.02	1.00	1.72	9.6	9.6	1.60	.273	4.60	10.34
16	Rollie Fingers R. Fingers	4	4	.500	30	0	2.35	45	0	0	9	57.1	50	15	20	5	17	3	21	4	232	1	7.06	2.67	2.65	0.78	19.4	7.3	1.17	.278	3.14	7.85
17	Clay Carroll C. Carroll	4	2	.667	22	0	1.39	22	0	0	2	32.1	24	5	5	1	13	0	8	4	129	0	6.12	3.62	1.69	0.28	17.1	10.1	1.14	.247	1.39	6.68
18	Evan Phillips E. Phillips	3	0	1.000	12	0	0.00	21	0	0	0	15.1	7	0	0	0	7	1	3	1	61	0	12.33	4.11	3.00	0.00	34.4	11.5	0.91	.219	0.00	4.11
19	Clay Holmes C. Holmes	3	1	.750	19	0	1.35	20	0	0	0	20.0	11	3	3	1	7	2	3	0	76	0	9.00	3.15	2.86	0.45	26.3	9.2	0.90	.217	1.35	4.95
20	A.J. Minter	3	1	.750	19	0	3.68	29	0	0	0	22.0	16	9	9	2	8	2	2	2	92	1	11.86	3.27	3.63	0.82	31.5	8.7	1.09	.275	3.68	6.55
21	Ryan Pressly R. Pressly	3	1	.750	47	0	2.78	60	0	0	14	45.1	34	14	16	1	15	3	27	1	186	7	11.91	2.98	4.00	0.20	32.3	8.1	1.08	.308	3.18	6.75
22	Chad Green C. Green	3	0	1.000	18	0	3.08	27	0	0	0	26.1	21	9	10	3	8	1	2	1	108	0	9.23	2.73	3.38	1.03	25.0	7.4	1.10	.261	3.42	7.18
23	Yusmeiro Petit Y. Petit	3	0	1.000	10	0	4.12	19	0	0	0	19.2	17	9	9	2	5	1	0	2	79	1	8.69	2.29	3.80	0.92	24.1	6.3	1.12	.288	4.12	7.78
24	Kenley Jansen K. Jansen	3	2	.600	59	0	2.20	94	0	0	20	65.1	34	16	18	7	18	3	47	3	250	0	12.95	2.48	5.22	0.96	37.6	7.2	0.80	.211	2.48	4.68
25	Wade Davis W. Davis	3	0	1.000	29	0	1.54	50	0	0	8	35.0	22	6	7	4	15	0	14	0	136	2	12.86	3.86	3.33	1.03	36.8	11.0	1.06	.269	1.80	5.66