what pitcher has the most wins plus losses in a single season since 2015

Since 2015, Marco Gonzales and Jason Vargas are tied for the most pitcher wins + pitcher losses in a season, with 29.

	NAME	W+L	W	L	SEASON	TM	W%	L%	G	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	Marco Gonzales M. Gonzales	29	16	13	2019	SEA	.552	.448	34	34	3.99	147	0	0	0	203.0	210	90	106	23	56	6	0	1	866	2	6.52	2.48	2.63	1.02	17.0	6.5	1.31	.295	4.70	90	4.14	93	9.31	7.4
2	Jason Vargas J. Vargas	29	18	11	2017	KCR	.621	.379	32	32	4.16	134	1	1	0	179.2	181	83	84	27	58	5	0	2	756	6	6.71	2.91	2.31	1.35	17.7	7.7	1.33	.289	4.21	93	4.66	109	9.07	-7.6
3	Rick Porcello R. Porcello	28	11	17	2017	BOS	.393	.607	33	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
4	Chris Archer C. Archer	28	9	19	2016	TBR	.321	.679	33	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
5	Hisashi Iwakuma H. Iwakuma	28	16	12	2016	SEA	.571	.429	33	33	4.12	147	0	0	0	199.0	218	91	95	28	46	5	0	3	836	4	6.65	2.08	3.20	1.27	17.6	5.5	1.33	.311	4.30	103	4.26	102	9.86	-2.5
6	Jake Arrieta J. Arrieta	28	22	6	2015	CHC	.786	.214	33	33	1.77	236	4	3	0	229.0	150	45	52	10	48	6	0	2	870	6	9.28	1.89	4.92	0.39	27.1	5.5	0.86	.246	2.04	45	2.34	60	5.90	39
7	Dallas Keuchel D. Keuchel	28	20	8	2015	HOU	.714	.286	33	33	2.48	216	3	2	0	232.0	185	64	68	17	51	2	0	0	911	9	8.38	1.98	4.24	0.66	23.7	5.6	1.02	.269	2.64	64	2.90	73	7.18	28.3
8	José Berríos J. Berríos	27	16	11	2024	TOR	.593	.407	32	32	3.60	153	1	0	0	192.1	168	77	79	31	54	13	0	1	786	1	7.16	2.53	2.83	1.45	19.5	6.9	1.15	.256	3.70	91	4.71	115	7.86	-13.3
9	Merrill Kelly M. Kelly	27	13	14	2019	ARI	.481	.519	32	32	4.42	158	0	0	0	183.1	184	90	95	29	57	2	0	4	777	4	7.76	2.80	2.77	1.42	20.3	7.3	1.31	.292	4.66	100	4.50	104	9.03	-3.6
10	Lance Lynn L. Lynn	27	16	11	2019	TEX	.593	.407	33	33	3.67	246	0	0	0	208.1	195	85	89	21	59	8	0	0	875	18	10.63	2.55	4.17	0.91	28.1	6.7	1.22	.322	3.84	73	3.12	66	8.42	36.6
11	Justin Verlander J. Verlander	27	21	6	2019	HOU	.778	.222	34	34	2.58	300	2	1	0	223.0	137	64	66	36	42	6	0	0	847	4	12.11	1.70	7.14	1.45	35.4	5.0	0.80	.218	2.66	57	3.26	72	5.53	31.5
12	Carlos Carrasco C. Carrasco	27	17	10	2018	CLE	.630	.370	32	30	3.38	231	2	0	0	192.0	173	72	78	21	43	6	1	4	784	9	10.83	2.02	5.37	0.98	29.5	5.5	1.13	.315	3.66	77	2.94	69	8.11	27.6
13	Corey Kluber C. Kluber	27	20	7	2018	CLE	.741	.259	33	33	2.89	222	2	1	0	215.0	179	69	75	25	34	3	0	0	842	2	9.29	1.42	6.53	1.05	26.4	4.0	0.99	.276	3.14	66	3.12	74	7.49	26.5
14	Luis Severino L. Severino	27	19	8	2018	NYY	.704	.296	32	32	3.39	220	1	1	0	191.1	173	72	76	19	46	5	0	0	780	8	10.35	2.16	4.78	0.89	28.2	5.9	1.14	.314	3.57	79	2.95	68	8.14	28.6
15	Patrick Corbin P. Corbin	27	14	13	2017	ARI	.519	.481	33	32	4.03	178	0	0	0	189.2	208	85	97	26	61	3	0	8	826	10	8.45	2.89	2.92	1.23	21.5	7.4	1.42	.326	4.60	89	4.07	93	9.87	6.2
16	Corey Kluber C. Kluber	27	18	9	2016	CLE	.667	.333	32	32	3.14	227	3	2	0	215.0	170	75	82	22	57	7	0	1	860	5	9.50	2.39	3.98	0.92	26.4	6.6	1.06	.271	3.43	72	3.25	76	7.12	24.5
17	Chris Sale C. Sale	27	17	10	2016	CWS	.630	.370	32	32	3.34	233	6	1	0	226.2	190	84	88	27	45	17	0	2	907	2	9.25	1.79	5.18	1.07	25.7	5.0	1.04	.279	3.49	80	3.45	81	7.54	19.9
18	Max Scherzer M. Scherzer	27	20	7	2016	WSH	.741	.259	34	34	2.96	284	1	0	0	228.1	165	75	77	31	56	6	0	2	902	2	11.19	2.21	5.07	1.22	31.5	6.2	0.97	.255	3.04	70	3.23	78	6.50	22.7
19	Kenta Maeda K. Maeda	27	16	11	2016	LAD	.593	.407	32	32	3.48	179	0	0	0	175.2	150	68	72	20	50	8	0	6	716	6	9.17	2.56	3.58	1.02	25.0	7.0	1.14	.283	3.69	87	3.57	88	7.69	9.2
20	Madison Bumgarner M. Bumgarner	27	18	9	2015	SFG	.667	.333	32	32	2.93	234	4	2	0	218.1	181	71	73	21	39	7	0	2	869	1	9.65	1.61	6.00	0.87	26.9	4.5	1.01	.282	3.01	78	2.87	78	7.46	20.4
21	Gerrit Cole G. Cole	27	19	8	2015	PIT	.704	.296	32	32	2.60	202	0	0	0	208.0	183	60	71	11	44	10	0	1	832	7	8.74	1.90	4.59	0.48	24.3	5.3	1.09	.304	3.07	68	2.65	70	7.92	26.9
22	Bartolo Colon B. Colon	27	14	13	2015	NYM	.519	.481	33	31	4.16	136	1	1	0	194.2	217	90	94	25	24	4	1	5	815	0	6.29	1.11	5.67	1.16	16.7	2.9	1.24	.307	4.35	112	3.83	99	10.03	1
23	Felix Hernandez F. Hernandez	27	18	9	2015	SEA	.667	.333	31	31	3.53	191	2	2	0	201.2	180	79	80	23	58	9	0	0	826	10	8.52	2.59	3.29	1.03	23.1	7.0	1.18	.288	3.57	92	3.71	94	8.03	5.4
24	Garrett Richards G. Richards	27	15	12	2015	LAA	.556	.444	32	32	3.65	176	1	1	0	207.1	181	84	94	20	76	5	0	2	865	17	7.64	3.30	2.32	0.87	20.3	8.8	1.24	.274	4.08	94	3.86	97	7.86	2.2
25	Charlie Morton C. Morton	26	14	12	2023	ATL	.538	.462	30	30	3.64	183	0	0	0	163.1	150	66	70	14	83	12	0	2	716	4	10.08	4.57	2.20	0.77	25.6	11.6	1.43	.321	3.86	82	3.87	90	8.27	7.6