Pedro Borbon has the most career pitcher wins - pitcher losses by a relief pitcher, with 32.

	NAME	W-L	W	L	W%	L%	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	Pedro Borbon P. Borbon	32	69	37	.651	.349	589	0	3.45	406	0	0	79	1016.1	1,077	390	423	62	249	27	278	84	4,274	24	3.60	2.20	1.63	0.55	9.5	5.8	1.30	.288	3.75	9.54
2	Lindy McDaniel L. McDaniel	31	119	88	.575	.425	913	0	3.14	1,165	0	0	174	1694.2	1,590	591	682	122	486	11	577	120	7,019	92	6.19	2.58	2.40	0.65	16.6	6.9	1.23	.280	3.62	8.44
3	Rich Gossage R. Gossage	30	115	85	.575	.425	965	0	2.77	1,340	0	0	310	1556.2	1,235	479	537	98	628	38	681	87	6,408	56	7.75	3.63	2.13	0.57	20.9	9.8	1.20	.264	3.10	7.14
4	Dick Hall D. Hall	30	71	41	.634	.366	421	0	2.83	501	0	0	71	780.1	668	245	268	72	131	12	237	59	3,085	2	5.78	1.51	3.82	0.83	16.2	4.2	1.02	.252	3.09	7.70
5	Hugh Casey H. Casey	30	51	21	.708	.292	287	0	3.11	223	0	0	54	570.0	536	197	230	29	225	10	189		2,441	8	3.52	3.55	0.99	0.46	9.1	9.2	1.34	.259	3.63	8.46
6	Johnny Murphy J. Murphy	30	73	43	.629	.371	375	0	3.28	283	0	0	107	758.1	707	276	311	33	318	5	293		3,228	14	3.36	3.77	0.89	0.39	8.8	9.9	1.35	.260	3.69	8.39
7	Al Hrabosky A. Hrabosky	29	64	35	.646	.354	544	0	3.12	548	0	0	97	716.1	615	248	283	50	313	13	307	58	3,034	35	6.89	3.93	1.75	0.63	18.1	10.3	1.30	.268	3.56	7.73
8	Grant Jackson G. Jackson	29	62	33	.653	.347	609	0	3.12	527	0	0	79	848.0	751	294	321	68	326	13	291	62	3,544	30	5.59	3.46	1.62	0.72	14.9	9.2	1.27	.262	3.41	7.97
9	Eddie Rommel E. Rommel	27	51	24	.680	.320	252	0	3.72	182	0	0	30	701.2	764	290	352	41	228	10	182		3,034	12	2.33	2.92	0.80	0.53	6.0	7.5	1.41	.281	4.51	9.80
10	Tom Burgmeier T. Burgmeier	26	79	53	.598	.402	742	0	3.19	579	0	0	102	1248.2	1,214	443	510	92	381	32	370	54	5,222	23	4.17	2.75	1.52	0.66	11.1	7.3	1.28	.271	3.68	8.75
11	Mace Brown M. Brown	26	57	31	.648	.352	332	0	3.22	316	0	0	48	718.2	715	257	309	28	285	4	206		3,081	19	3.96	3.57	1.11	0.35	10.3	9.3	1.39	.281	3.87	8.95
12	Aurelio Lopez A. Lopez	25	58	33	.637	.363	450	0	3.44	602	0	0	93	860.0	738	329	360	96	346	14	281	38	3,604	31	6.30	3.62	1.74	1.00	16.7	9.6	1.26	.252	3.77	7.72
13	Bob Stanley B. Stanley	24	85	61	.582	.418	552	0	3.28	516	0	0	132	1159.0	1,211	422	498	64	334	28	377	77	4,879	16	4.01	2.59	1.54	0.50	10.6	6.8	1.33	.291	3.87	9.40
14	Don McMahon D. McMahon	24	90	66	.577	.423	872	0	2.94	992	0	0	152	1297.0	1,040	424	474	102	576	34	505	82	5,446	74	6.88	4.00	1.72	0.71	18.2	10.6	1.25	.251	3.29	7.22
15	Joe Heving J. Heving	24	59	35	.628	.372	390	0	3.66	342	0	0	65	794.1	841	323	416	51	310	16	232		3,492	13	3.87	3.51	1.10	0.58	9.8	8.9	1.45	.285	4.71	9.53
16	Ryan Yarbrough R. Yarbrough	23	39	16	.709	.291	136	0	3.74	336	0	0	2	419.0	375	174	181	54	115	36	27	10	1,744	3	7.22	2.47	2.92	1.16	19.3	6.6	1.17	.267	3.89	8.05
17	Joe Nathan J. Nathan	23	52	29	.642	.358	758	0	2.50	881	0	0	377	761.0	540	211	222	60	248	18	587	27	3,048	41	10.42	2.93	3.55	0.71	28.9	8.1	1.04	.261	2.63	6.39
18	Mark Clear M. Clear	23	71	48	.597	.403	480	0	3.81	802	0	0	83	801.0	667	339	392	59	551	34	337	45	3,593	49	9.01	6.19	1.46	0.66	22.3	15.3	1.52	.283	4.40	7.49
19	Doug Bird D. Bird	23	44	21	.677	.323	332	0	3.44	404	0	0	60	632.2	616	242	259	52	192	11	199	48	2,643	15	5.75	2.73	2.10	0.74	15.3	7.3	1.28	.284	3.68	8.76
20	Sparky Lyle S. Lyle	23	99	76	.566	.434	899	0	2.88	873	0	0	238	1390.1	1,292	445	519	84	481	14	634	81	5,796	68	5.65	3.11	1.81	0.54	15.1	8.3	1.28	.278	3.36	8.36
21	Brendan Donnelly B. Donnelly	22	32	10	.762	.238	386	0	3.22	369	0	0	6	385.1	326	138	153	35	154	19	97	12	1,632	15	8.62	3.60	2.40	0.82	22.6	9.4	1.25	.276	3.57	7.61
22	Mariano Rivera M. Rivera	22	79	57	.581	.419	1,105	0	2.06	1,135	0	0	652	1233.2	934	282	305	63	266	44	952	41	4,870	13	8.28	1.94	4.27	0.46	23.3	5.5	0.97	.259	2.23	6.81
23	Danny Darwin D. Darwin	22	51	29	.638	.363	345	0	3.06	487	0	0	32	620.1	552	211	239	46	213	17	171	48	2,597	13	7.07	3.09	2.29	0.67	18.8	8.2	1.23	.276	3.47	8.01
24	Clay Carroll C. Carroll	22	88	66	.571	.429	703	0	2.82	613	0	0	143	1204.2	1,141	377	438	57	397	35	373	105	5,047	38	4.58	2.97	1.54	0.43	12.1	7.9	1.28	.275	3.27	8.52
25	Ed Roebuck E. Roebuck	22	52	30	.634	.366	459	0	3.35	471	0	0	62	786.0	749	293	372	88	301	27	206	51	3,355	37	5.39	3.45	1.56	1.01	14.0	9.0	1.34	.268	4.26	8.58