most recent mlb pitchers to lose 20 games in a season

Mike Maroth took the loss 21 times in 2003.

Interpreted as:

most recent MLB pitchers to lose 20 or more games in a season

	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	Brian Kingman B. Kingman	20	1980	OAK	8	.714	32	.286	30	3.83	116	10	1	0	211.1	209	90	105	21	82	4	0	5	912	6	4.94	3.49	1.41	0.89	12.7	9.0	1.38	.273	4.47	100	4.16	104	8.90	-4.2
3	Phil Niekro P. Niekro	20	1979	ATL	21	.488	44	.512	44	3.39	208	23	1	0	342.0	311	129	160	41	113	11	0	8	1,436	18	5.47	2.97	1.84	1.08	14.5	7.9	1.24	.254	4.21	84	4.15	101	8.18	0.1
4	Jerry Koosman J. Koosman	20	1977	NYM	8	.714	32	.286	32	3.49	192	6	1	0	226.2	195	88	102	17	81	4	0	8	940	2	7.62	3.22	2.37	0.68	20.4	8.6	1.22	.276	4.05	94	3.13	82	7.74	17.6
5	Phil Niekro P. Niekro	20	1977	ATL	16	.556	44	.444	43	4.03	262	20	2	0	330.1	315	148	166	26	164	8	1	12	1,428	17	7.14	4.47	1.60	0.71	18.3	11.5	1.45	.299	4.52	95	3.73	88	8.58	18.1
6	Wilbur Wood W. Wood	20	1975	CWS	16	.556	43	.444	43	4.11	140	14	2	0	291.1	309	133	148	26	92	5	0	5	1,245	6	4.32	2.84	1.52	0.80	11.2	7.4	1.38	.288	4.57	107	3.77	100	9.55	-0.3
7	Bill Bonham B. Bonham	22	1974	CHC	11	.667	44	.333	36	3.86	191	10	2	1	242.2	246	104	133	13	109	6	6	8	1,079	13	7.08	4.04	1.75	0.48	17.7	10.1	1.46	.307	4.93	100	3.11	81	9.12	19
8	Randy Jones R. Jones	22	1974	SDP	8	.733	40	.267	34	4.45	124	4	1	2	208.1	217	103	118	16	78	5	5	12	908	4	5.36	3.37	1.59	0.69	13.7	8.6	1.42	.293	5.10	129	3.57	102	9.37	-2
9	Mickey Lolich M. Lolich	21	1974	DET	16	.568	41	.432	41	4.15	202	27	3	0	308.0	310	142	155	38	78	3	0	11	1,263	10	5.90	2.28	2.59	1.11	16.0	6.2	1.26	.289	4.53	109	3.65	98	9.06	3.2
10	Steve Rogers S. Rogers	22	1974	MON	15	.595	38	.405	38	4.47	154	11	1	0	253.2	255	126	139	19	80	5	0	7	1,064	7	5.46	2.84	1.93	0.67	14.5	7.5	1.32	.293	4.93	119	3.33	91	9.05	8.9
11	Clyde Wright C. Wright	20	1974	MIL	9	.690	38	.310	32	4.42	64	15	0	0	232.0	264	114	122	22	54	0	2	4	996	6	2.48	2.09	1.19	0.85	6.4	5.4	1.37	.283	4.73	123	3.95	110	10.24	-9.5
12	Stan Bahnsen S. Bahnsen	21	1973	CWS	18	.538	42	.462	42	3.57	120	14	4	0	282.1	290	112	128	20	117	5	0	2	1,218	10	3.83	3.73	1.03	0.64	9.9	9.6	1.44	.282	4.08	92	3.92	101	9.24	-1.2
13	Steve Carlton S. Carlton	20	1973	PHI	13	.606	40	.394	40	3.90	223	18	3	0	293.1	293	127	146	29	113	3	0	12	1,262	7	6.84	3.47	1.97	0.89	17.7	9.0	1.38	.295	4.48	103	3.51	93	8.99	9.3
14	Wilbur Wood W. Wood	20	1973	CWS	24	.455	49	.545	48	3.46	199	21	4	0	359.1	381	138	166	25	91	7	1	3	1,531	7	4.98	2.28	2.19	0.63	13.0	5.9	1.31	.294	4.16	89	3.17	82	9.54	27.9
15	Steve Arlin S. Arlin	21	1972	SDP	10	.677	38	.323	37	3.60	159	12	3	0	250.0	217	100	115	19	122	9	1	15	1,072	15	5.72	4.39	1.30	0.68	14.8	11.4	1.36	.260	4.14	110	3.68	117	7.81	-16
16	Denny McLain D. McLain	22	1971	WSH	10	.688	33	.313	32	4.28	103	9	3	0	216.2	233	103	115	31	72	3	1	8	931	4	4.28	2.99	1.43	1.29	11.1	7.7	1.41	.280	4.78	127	4.39	127	9.68	-23.8
17	Clay Kirby C. Kirby	20	1969	SDP	7	.741	35	.259	35	3.80	113	2	0	0	215.2	204	91	108	18	100	6	0	13	931	7	4.72	4.17	1.13	0.75	12.1	10.7	1.41	.268	4.51	110	4.01	121	8.51	-18.1
18	Luis Tiant L. Tiant	20	1969	CLE	9	.690	38	.310	37	3.71	156	9	1	0	249.2	229	103	123	37	129	8	0	11	1,091	0	5.62	4.65	1.21	1.33	14.3	11.8	1.43	.252	4.43	100	4.83	124	8.26	-25
19	Dick Ellsworth D. Ellsworth	22	1966	CHC	8	.733	38	.267	37	3.98	144	9	0	0	269.1	321	119	150	28	51	5	0	5	1,169	5	4.81	1.70	2.82	0.94	12.3	4.4	1.38	.311	5.01	105	3.46	94	10.73	6.4
20	Mel Stottlemyre M. Stottlemyre	20	1966	NYY	12	.625	37	.375	35	3.80	146	9	3	1	251.0	239	106	116	18	82	1	2	7	1,042	8	5.24	2.94	1.78	0.65	14.0	7.9	1.28	.278	4.16	113	3.31	95	8.57	4.5
21	Jack Fisher J. Fisher	24	1965	NYM	8	.750	43	.250	36	3.94	116	10	0	1	253.2	252	111	121	22	68	4	4	6	1,054	6	4.12	2.41	1.71	0.78	11.0	6.5	1.26	.273	4.29	112	3.58	106	8.94	-5.7
22	Al Jackson A. Jackson	20	1965	NYM	8	.714	37	.286	31	4.34	120	7	3	1	205.1	217	99	111	17	61	8	2	4	884	6	5.26	2.67	1.97	0.75	13.6	6.9	1.35	.295	4.87	124	3.43	101	9.51	-1.2
23	Larry Jackson L. Jackson	21	1965	CHC	14	.600	39	.400	39	3.85	131	12	4	0	257.1	268	110	126	28	57	5	0	8	1,079	5	4.58	1.99	2.30	0.98	12.1	5.3	1.26	.280	4.41	106	3.64	103	9.37	-2.7
24	Tracy Stallard T. Stallard	20	1964	NYM	10	.667	36	.333	34	3.79	118	11	2	0	225.2	213	95	111	20	73	6	1	3	945	12	4.71	2.91	1.62	0.80	12.5	7.7	1.27	.265	4.43	108	3.76	112	8.49	-10.4
25	Roger Craig R. Craig	22	1963	NYM	5	.815	46	.185	31	3.78	108	14	0	2	236.0	249	99	117	28	58	6	9	2	1,014	4	4.12	2.21	1.86	1.07	10.7	5.7	1.30	.271	4.46	110	3.92	115	9.50	-12.6