most losses in a season by a pitcher, since 1993

Since 1993, Mike Maroth has lost the most games in a season, with 21 games in 2003.

	NAME	L	SEASON	TM	W	L%	G	W%	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	ERA-	FIP	FIP-	H/9	PRAA
1	Mike Maroth M. Maroth	21	2003	DET	9	.700	33	.300	33	5.73	87	1	0	0	193.1	231	123	131	34	50	8	0	2	847	7	4.05	2.33	1.74	1.58	10.3	5.9	1.45	.295	6.10	130	5.31	120	10.75	-19.5
2	Patrick Corbin P. Corbin	19	2022	WSH	6	.760	31	.240	31	6.31	128	1	0	0	152.2	210	107	119	27	49	7	0	1	713	2	7.55	2.89	2.61	1.59	18.0	6.9	1.70	.365	7.02	156	4.83	120	12.38	-13.4
3	Chris Archer C. Archer	19	2016	TBR	9	.679	33	.321	33	4.02	233	0	0	0	201.1	183	90	100	30	67	3	0	0	850	11	10.42	3.00	3.48	1.34	27.4	7.9	1.24	.296	4.47	99	3.80	92	8.18	6.9
4	James Shields J. Shields	19	2016	TOT	6	.760	33	.240	33	5.85	135	1	0	0	181.2	208	118	122	40	82	8	0	3	822	10	6.69	4.06	1.65	1.98	16.4	10.0	1.60	.302	6.04	142	6.00	143	10.30	-36.8
5	Darrell May D. May	19	2004	KCR	9	.679	31	.321	31	5.61	120	3	1	0	186.0	234	116	130	38	55	2	0	4	832	2	5.81	2.66	2.18	1.84	14.4	6.6	1.55	.318	6.29	115	5.33	116	11.32	-14.3
6	Jeremy Bonderman J. Bonderman	19	2003	DET	6	.760	33	.240	28	5.56	108	0	0	0	162.0	193	100	118	23	58	4	0	2	727	12	6.00	3.22	1.86	1.28	14.9	8.0	1.55	.318	6.56	127	4.69	106	10.72	-5
7	Bobby Jones B. Jones	19	2001	SDP	8	.704	33	.296	33	5.12	113	1	0	0	195.0	250	111	137	37	38	4	0	6	880	3	5.22	1.75	2.97	1.71	12.8	4.3	1.48	.310	6.32	126	5.00	118	11.54	-17.8
8	Albie Lopez A. Lopez	19	2001	TOT	9	.679	33	.321	33	4.81	136	3	3	0	205.2	226	110	123	26	75	4	0	3	896	2	5.95	3.28	1.81	1.14	15.2	8.4	1.46	.305	5.38	107	4.52	103	9.89	-2.7
9	Omar Daal O. Daal	19	2000	TOT	4	.826	32	.174	28	6.14	96	0	0	0	167.0	208	114	128	26	72	9	1	11	775	0	5.17	3.88	1.33	1.40	12.4	9.3	1.68	.318	6.90	131	5.45	116	11.21	-14
10	Scott Erickson S. Erickson	19	1993	MIN	8	.704	34	.296	34	5.19	116	1	0	0	218.2	266	126	138	17	71	10	0	1	976	5	4.77	2.92	1.63	0.70	11.9	7.3	1.54	.327	5.68	118	4.04	94	10.95	6.6
11	A.J. Burnett	18	2014	PHI	8	.692	34	.308	34	4.59	190	1	0	0	213.2	205	109	122	20	96	16	0	2	935	9	8.00	4.04	1.98	0.84	20.3	10.3	1.41	.302	5.14	127	4.14	110	8.63	-8.6
12	Edwin Jackson E. Jackson	18	2013	CHC	8	.692	31	.308	31	4.98	135	0	0	0	175.1	197	97	110	16	59	5	0	7	777	14	6.93	3.03	2.29	0.82	17.4	7.6	1.46	.322	5.65	133	3.78	100	10.11	0.3
13	Daniel Cabrera D. Cabrera	18	2007	BAL	9	.667	34	.333	34	5.55	166	1	0	0	204.1	207	126	133	25	108	15	0	6	922	7	7.31	4.76	1.54	1.10	18.0	11.7	1.54	.299	5.86	123	5.00	110	9.12	-9.3
14	Rodrigo Lopez R. Lopez	18	2006	BAL	9	.667	36	.333	29	5.90	136	0	0	0	189.0	234	124	129	32	59	4	2	2	847	6	6.48	2.81	2.31	1.52	16.1	7.0	1.55	.328	6.14	128	4.90	105	11.14	-4.9
15	Kip Wells K. Wells	18	2005	PIT	8	.692	33	.308	33	5.09	132	1	1	0	182.0	186	103	116	23	99	12	0	8	828	8	6.53	4.90	1.33	1.14	15.9	12.0	1.57	.290	5.74	122	5.03	121	9.20	-18.1
16	Tanyon Sturtze T. Sturtze	18	2002	TBD	4	.818	33	.182	33	5.18	137	4	0	0	224.0	271	129	141	33	89	9	0	2	1,008	7	5.50	3.58	1.54	1.33	13.6	8.8	1.61	.322	5.67	117	4.96	114	10.89	-14.9
17	Steve Trachsel S. Trachsel	18	1999	CHC	8	.692	34	.308	34	5.56	149	4	0	0	205.2	226	127	133	32	64	3	0	4	894	8	6.52	2.80	2.33	1.40	16.7	7.2	1.41	.300	5.82	122	4.67	100	9.89	-0.2
18	Jim Abbott J. Abbott	18	1996	CAL	2	.900	27	.100	23	7.48	58	1	0	0	142.0	171	118	128	23	78	4	2	3	654	13	3.68	4.94	0.74	1.46	8.9	11.9	1.75	.301	8.11	150	6.18	125	10.84	-19
19	Doug Drabek D. Drabek	18	1993	HOU	9	.667	34	.333	34	3.79	157	7	2	0	237.2	242	100	108	18	60	3	0	12	991	12	5.95	2.27	2.62	0.68	15.8	6.1	1.27	.297	4.09	99	3.44	89	9.16	10.8
20	Jordan Lyles J. Lyles	17	2023	KCR	6	.739	31	.261	31	6.28	120	3	0	0	177.2	176	124	130	39	45	6	0	0	748	10	6.08	2.28	2.67	1.98	16.0	6.0	1.24	.255	6.59	140	5.62	131	8.92	-26.3
21	Spencer Turnbull S. Turnbull	17	2019	DET	3	.850	30	.150	30	4.61	146	0	0	0	148.1	154	76	86	14	59	16	0	1	656	9	8.86	3.58	2.47	0.85	22.3	9.0	1.44	.333	5.22	100	3.98	87	9.34	9.7
22	Rick Porcello R. Porcello	17	2017	BOS	11	.607	33	.393	33	4.65	181	2	0	0	203.1	236	105	125	38	48	6	0	1	885	5	8.01	2.12	3.77	1.68	20.5	5.4	1.40	.324	5.53	101	4.60	106	10.45	-5.9
23	Shelby Miller S. Miller	17	2015	ATL	6	.739	33	.261	33	3.02	171	2	2	0	205.1	183	69	82	13	73	6	0	8	860	5	7.50	3.20	2.34	0.57	19.9	8.5	1.25	.285	3.59	78	3.44	91	8.02	7.3
24	Kevin Correia K. Correia	17	2014	TOT	7	.708	32	.292	26	5.44	79	0	0	0	154.0	191	93	104	20	40	5	3	2	687	7	4.62	2.34	1.98	1.17	11.5	5.8	1.50	.315	6.08	144	4.67	124	11.16	-15.1
25	Eric Stults E. Stults	17	2014	SDP	8	.680	32	.320	32	4.30	111	0	0	0	176.0	197	84	93	26	45	4	0	3	763	3	5.68	2.30	2.47	1.33	14.5	5.9	1.38	.296	4.76	124	4.62	128	10.07	-20.3