Milt Gaston and Jack Russell were tied for losing the most games in 1930, with 20 games.

	NAME	L	SEASON	TM	W	L%	G	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Milt Gaston M. Gaston	20	1930	BSA	13	.606	38	.394	34	3.92	99	21	2	2	273.0	272	119	138	15	98	0	4	1,175	11	3.26	3.23	1.01	0.49	8.4	8.3	1.36	.267	4.55	86	4.57	99	8.97	0.6
2	Jack Russell J. Russell	20	1930	BSA	9	.690	35	.310	30	5.45	35	15	0	0	229.2	302	139	162	11	53	3	3	1,026	1	1.37	2.08	0.66	0.43	3.4	5.2	1.55	.315	6.35	120	4.55	99	11.83	1
3	Dick Coffman D. Coffman	18	1930	SLA	8	.692	38	.308	30	5.14	54	12	1	1	196.0	250	112	134	14	69	5	5	892	2	2.48	3.17	0.78	0.64	6.1	7.7	1.63	.315	6.15	107	5.01	104	11.48	-3.1
4	Larry French L. French	18	1930	PIT	17	.514	42	.486	35	4.36	90	21	3	1	274.2	325	133	163	20	89	6	5	1,232	3	2.95	2.92	1.01	0.66	7.3	7.2	1.51	.297	5.34	87	4.83	97	10.65	4.5
5	Benny Frey B. Frey	18	1930	CIN	11	.621	44	.379	28	4.70	43	14	2	1	245.0	295	128	145	15	62	3	9	1,059	7	1.58	2.28	0.69	0.55	4.1	5.9	1.46	.299	5.33	99	4.74	100	10.84	-1.4
6	Dutch Henry D. Henry	17	1930	CWS	2	.895	35	.105	16	4.88	35	4	0	0	155.0	211	84	116	11	48	4	12	706	2	2.03	2.79	0.73	0.64	5.0	6.8	1.67	.329	6.74	108	4.98	109	12.25	-7.9
7	Hod Lisenbee H. Lisenbee	17	1930	BSA	10	.630	37	.370	31	4.40	47	15	0	0	237.1	254	116	130	20	86	5	6	1,028	0	1.78	3.26	0.55	0.76	4.6	8.4	1.43	.269	4.93	97	5.35	116	9.63	-20.5
8	Claude Willoughby C. Willoughby	17	1930	PHN	4	.810	41	.190	24	7.59	38	5	1	1	153.0	241	129	147	17	68	2	8	744	3	2.24	4.00	0.56	1.00	5.1	9.1	2.02	.362	8.65	139	5.82	108	14.18	-5
9	Alvin Crowder A. Crowder	16	1930	TOT	18	.471	40	.529	35	3.89	107	25	1	2	279.2	276	121	133	17	96	2	4	1,188	1	3.44	3.09	1.11	0.55	9.0	8.1	1.33	.268	4.28	84	4.58	97	8.88	4.1
10	Willis Hudlin W. Hudlin	16	1930	CLE	13	.552	37	.448	33	4.57	60	13	1	1	216.2	255	110	133	12	76	1	4	964	1	2.49	3.16	0.79	0.50	6.2	7.9	1.53	.298	5.52	94	4.73	96	10.59	5.5
11	Red Lucas R. Lucas	16	1930	CIN	14	.533	33	.467	28	5.38	53	18	1	1	210.2	270	126	135	15	44	1	4	927	0	2.26	1.88	1.20	0.64	5.7	4.7	1.49	.313	5.77	113	4.56	97	11.53	3.1
12	Socks Seibold S. Seibold	16	1930	BSN	15	.516	36	.484	33	4.12	70	20	1	2	251.0	288	115	135	16	85	2	2	1,109	1	2.51	3.05	0.82	0.57	6.3	7.7	1.49	.291	4.84	86	4.81	101	10.33	-1.8
13	Ray Benge R. Benge	15	1930	PHN	11	.577	38	.423	29	5.70	70	14	0	1	225.2	305	143	178	22	81	1	4	1,055	5	2.79	3.23	0.86	0.88	6.6	7.7	1.71	.321	7.10	104	5.24	97	12.16	5.9
14	Larry Benton L. Benton	15	1930	TOT	8	.652	43	.348	26	5.50	63	10	0	2	207.2	288	127	155	15	59	0	9	948	9	2.73	2.56	1.07	0.65	6.6	6.2	1.67	.337	6.72	115	4.69	99	12.48	0.7
15	Ben Cantwell B. Cantwell	15	1930	BSN	9	.625	31	.375	21	4.88	43	10	0	2	173.1	213	94	99	15	45	1	6	753	3	2.23	2.34	0.96	0.78	5.7	6.0	1.49	.305	5.14	101	4.93	103	11.06	-3.5
16	Ed Durham E. Durham	15	1930	BSA	4	.789	33	.211	12	4.69	28	6	1	1	140.0	144	73	81	9	43	2	17	599	0	1.80	2.76	0.65	0.58	4.7	7.2	1.34	.261	5.21	103	4.90	106	9.26	-5
17	Sam Gray S. Gray	15	1930	SLA	4	.789	27	.211	24	6.28	51	7	0	0	167.2	215	117	133	17	52	4	1	756	2	2.74	2.79	0.98	0.91	6.7	6.9	1.59	.313	7.14	131	5.21	108	11.54	-6.3
18	Ted Lyons T. Lyons	15	1930	CWS	22	.405	42	.595	36	3.78	69	29	1	2	297.2	331	125	160	12	57	2	6	1,258	2	2.09	1.72	1.21	0.36	5.5	4.5	1.30	.285	4.84	84	4.16	91	10.01	12.8
19	George Pipgras G. Pipgras	15	1930	NYY	15	.500	44	.500	30	4.11	111	15	3	5	221.0	230	101	133	9	70	8	13	974	4	4.52	2.85	1.59	0.37	11.4	7.2	1.36	.285	5.42	93	4.08	92	9.37	8.7
20	Les Sweetland L. Sweetland	15	1930	PHN	7	.682	34	.318	25	7.71	36	8	1	0	167.0	271	143	164	24	60	5	5	817	0	1.94	3.23	0.60	1.29	4.4	7.3	1.98	.357	8.84	141	6.11	113	14.60	-10.3
21	Dazzy Vance D. Vance	15	1930	BKN	17	.469	35	.531	31	2.61	173	20	4	1	258.2	241	75	97	15	55	5	3	1,061	4	6.02	1.91	3.15	0.52	16.3	5.2	1.14	.278	3.38	54	3.61	75	8.39	35
22	Bill Walker B. Walker	15	1930	NYG	17	.469	39	.531	34	3.93	105	13	2	1	245.1	258	107	133	19	88	7	4	1,075	2	3.85	3.23	1.19	0.70	9.8	8.2	1.41	.279	4.88	81	4.81	100	9.46	-0.2
23	Sheriff Blake S. Blake	14	1930	CHC	10	.583	34	.417	24	4.82	80	7	0	0	186.2	213	100	127	14	99	3	4	856	4	3.86	4.77	0.81	0.68	9.3	11.6	1.67	.302	6.12	98	5.26	108	10.27	-8.2
24	Danny MacFayden D. MacFayden	14	1930	BSA	11	.560	36	.440	33	4.21	76	18	1	2	269.1	293	126	141	9	93	6	3	1,169	2	2.54	3.11	0.82	0.30	6.5	8.0	1.43	.288	4.71	92	4.47	97	9.79	3.5
25	Charlie Root C. Root	14	1930	CHC	16	.467	37	.533	30	4.33	124	15	4	4	220.1	247	106	122	18	63	7	6	967	1	5.07	2.57	1.97	0.74	12.8	6.5	1.41	.303	4.98	88	4.39	90	10.09	11.7