Hoyt Wilhelm has the most career wins when he didn't start, with 124 wins.

Interpreted as:

most regular-season wins without a start by a player

	NAME	W	GS	L	W%	G	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	Hoyt Wilhelm H. Wilhelm	124	0	103	.546	1,018	2.49	1,363	0	0	228	1872.1	1,436	518	636	125	661	51	651	58	7,619	83	6.55	3.18	2.06	0.60	17.9	8.7	1.12	.242	3.06	6.90
2	Lindy McDaniel L. McDaniel	119	0	88	.575	913	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	115	0	85	.575	965	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	Rollie Fingers R. Fingers	107	0	101	.514	907	2.73	1,183	0	0	341	1505.2	1,276	456	502	97	429	29	709	105	6,104	37	7.07	2.56	2.76	0.58	19.4	7.0	1.13	.270	3.00	7.63
5	Sparky Lyle S. Lyle	99	0	76	.566	899	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
6	Roy Face R. Face	96	0	82	.539	821	3.27	793	0	0	191	1212.0	1,170	441	494	117	314	12	574	101	5,001	30	5.89	2.33	2.53	0.87	15.9	6.3	1.22	.280	3.67	8.69
7	Kent Tekulve K. Tekulve	94	0	90	.511	1,050	2.85	779	0	0	184	1436.2	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	8.18
8	Gene Garber G. Garber	94	0	108	.465	922	3.30	913	0	0	218	1452.2	1,404	533	624	113	424	37	609	151	6,083	29	5.66	2.63	2.15	0.70	15.0	7.0	1.26	.281	3.87	8.70
9	Mike Marshall M. Marshall	92	0	98	.484	700	2.96	813	0	0	188	1259.1	1,143	414	469	68	461	28	549	48	5,276	63	5.81	3.29	1.76	0.49	15.4	8.7	1.27	.275	3.35	8.17
10	John Franco J. Franco	90	0	87	.508	1,119	2.89	975	0	0	424	1245.2	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	8.42
11	Don McMahon D. McMahon	90	0	66	.577	872	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
12	Tug McGraw T. McGraw	89	0	69	.563	785	2.86	974	0	0	180	1301.1	1,104	414	467	74	494	20	541	123	5,391	51	6.74	3.42	1.97	0.51	18.1	9.2	1.23	.269	3.23	7.64
13	Clay Carroll C. Carroll	88	0	66	.571	703	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
14	Jesse Orosco J. Orosco	87	0	78	.527	1,248	3.12	1,169	0	0	144	1277.0	1,035	442	499	112	568	34	501	85	5,374	40	8.24	4.00	2.06	0.79	21.8	10.6	1.26	.264	3.52	7.29
15	Bob Stanley B. Stanley	85	0	61	.582	552	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
16	Gary Lavelle G. Lavelle	80	0	75	.516	742	2.86	766	0	0	136	1077.2	993	343	403	50	438	13	399	126	4,571	19	6.40	3.66	1.75	0.42	16.8	9.6	1.33	.285	3.37	8.29
17	Bill Campbell B. Campbell	80	0	65	.552	691	3.44	829	0	0	126	1177.1	1,077	450	510	76	472	18	455	99	5,001	44	6.34	3.61	1.76	0.58	16.6	9.4	1.32	.278	3.90	8.23
18	Mariano Rivera M. Rivera	79	0	57	.581	1,105	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
19	Tom Burgmeier T. Burgmeier	79	0	53	.598	742	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
20	Ron Perranoski R. Perranoski	79	0	74	.516	736	2.78	685	0	0	178	1170.2	1,091	362	440	48	467	24	458	121	5,002	28	5.27	3.59	1.47	0.37	13.7	9.3	1.33	.276	3.38	8.39
21	Stu Miller S. Miller	79	0	67	.541	611	2.95	821	0	0	153	1094.0	946	358	409	75	395	25	406	97	4,538	15	6.75	3.25	2.08	0.62	18.1	8.7	1.23	.270	3.36	7.78
22	Mike Timlin M. Timlin	74	0	71	.510	1,054	3.64	859	0	0	141	1185.1	1,148	479	526	118	369	47	467	72	4,999	31	6.52	2.80	2.33	0.90	17.2	7.4	1.28	.286	3.99	8.72
23	Jeff Reardon J. Reardon	73	0	77	.487	880	3.16	877	0	0	367	1132.1	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	7.95
24	Johnny Murphy J. Murphy	73	0	43	.629	375	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
25	John Hiller J. Hiller	72	0	57	.558	502	2.78	831	0	0	125	963.0	792	297	334	82	439	11	363	69	4,054	33	7.77	4.10	1.89	0.77	20.5	10.8	1.28	.264	3.12	7.40