most losses in a season by a pitcher in the last 15 years

Between October 29, 2010 and October 29, 2025, Patrick Corbin, James Shields and Chris Archer are tied for losing the most games in a season, with 19 games.

	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	H/9
1	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	12.38
2	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	10.30
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	8.18
4	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	8.63
5	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	10.11
6	Kyle Freeland K. Freeland	17	2025	COL	5	.773	31	.227	31	4.98	124	0	0	0	162.2	193	90	105	22	38	6	0	2	709	2	6.86	2.10	3.26	1.22	17.5	5.4	1.42	.329	5.81	10.68
7	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	8.92
8	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	9.34
9	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	10.45
10	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	8.02
11	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	10.07
12	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	11.16
13	Lucas Harrell L. Harrell	17	2013	HOU	6	.739	36	.261	22	5.86	89	0	0	0	153.2	174	100	111	20	88	6	8	5	707	8	5.21	5.15	1.01	1.17	12.6	12.4	1.70	.306	6.50	10.19
14	Ubaldo Jimenez U. Jimenez	17	2012	CLE	9	.654	31	.346	31	5.40	143	0	0	0	176.2	190	106	116	25	95	8	0	3	805	16	7.28	4.84	1.51	1.27	17.8	11.8	1.61	.309	5.91	9.68
15	Jeremy Guthrie J. Guthrie	17	2011	BAL	9	.654	34	.346	32	4.33	130	2	0	0	208.0	213	100	113	26	66	9	1	5	889	0	5.63	2.86	1.97	1.13	14.6	7.4	1.34	.284	4.89	9.22
16	Derek Lowe D. Lowe	17	2011	ATL	9	.654	34	.346	34	5.05	137	0	0	0	187.0	212	105	110	14	70	3	0	4	830	1	6.59	3.37	1.96	0.67	16.5	8.4	1.51	.327	5.29	10.20
17	Germán Márquez G. Márquez	16	2025	COL	3	.842	26	.158	26	6.70	83	0	0	0	126.1	168	94	106	23	48	6	0	1	591	6	5.91	3.42	1.73	1.64	14.0	8.1	1.71	.336	7.55	11.97
18	Mitchell Parker M. Parker	16	2025	WSH	9	.640	33	.360	30	5.68	103	0	0	1	164.2	178	104	116	25	58	4	2	0	725	3	5.63	3.17	1.78	1.37	14.2	8.0	1.43	.286	6.34	9.73
19	Kutter Crawford K. Crawford	16	2024	BOS	9	.640	33	.360	33	4.36	175	0	0	0	183.2	155	89	97	34	51	9	0	0	759	4	8.58	2.50	3.43	1.67	23.1	6.7	1.12	.247	4.75	7.60
20	Patrick Corbin P. Corbin	16	2021	WSH	9	.640	31	.360	31	5.82	143	0	0	0	171.2	192	111	114	37	60	3	0	2	751	0	7.50	3.15	2.38	1.94	19.0	8.0	1.47	.305	5.98	10.07
21	Luis Castillo L. Castillo	16	2021	CIN	8	.667	33	.333	33	3.98	192	0	0	0	187.2	181	83	94	19	75	7	0	4	803	1	9.21	3.60	2.56	0.91	23.9	9.3	1.36	.318	4.51	8.68
22	Dylan Bundy D. Bundy	16	2018	BAL	8	.667	31	.333	31	5.45	184	1	0	0	171.2	188	104	116	41	54	6	0	1	750	6	9.65	2.83	3.41	2.15	24.5	7.2	1.41	.316	6.08	9.86
23	James Shields J. Shields	16	2018	CWS	7	.696	34	.304	33	4.53	154	0	0	0	204.2	190	103	115	34	78	9	1	0	871	11	6.77	3.43	1.97	1.50	17.7	9.0	1.31	.262	5.06	8.36
24	Jimmy Nelson J. Nelson	16	2016	MIL	8	.667	32	.333	32	4.62	140	0	0	0	179.1	186	92	108	25	86	17	0	2	807	8	7.03	4.32	1.63	1.25	17.3	10.7	1.52	.299	5.42	9.33
25	Andrew Cashner A. Cashner	16	2015	SDP	6	.727	31	.273	31	4.34	165	0	0	0	184.2	200	89	111	19	66	6	0	2	804	3	8.04	3.22	2.50	0.93	20.5	8.2	1.44	.330	5.41	9.75