Rick Porcello lost the most games in 2017, with 17 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	ERA-	FIP	FIP-	H/9	PRAA
1	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
2	Tyler Chatwood T. Chatwood	15	2017	COL	8	.652	33	.348	25	4.69	120	1	1	1	147.2	136	77	79	20	77	4	3	2	631	12	7.31	4.69	1.56	1.22	19.0	12.2	1.44	.283	4.81	94	4.93	108	8.29	-5.2
3	Wade Miley W. Miley	15	2017	BAL	8	.652	32	.348	32	5.61	142	0	0	0	157.1	179	98	104	25	93	4	0	1	728	1	8.12	5.32	1.53	1.43	19.5	12.8	1.73	.332	5.95	126	5.26	115	10.24	-11.5
4	Matt Moore M. Moore	15	2017	SFG	6	.714	32	.286	31	5.52	148	0	0	0	174.1	200	107	116	27	67	7	1	3	790	10	7.64	3.46	2.21	1.39	18.7	8.5	1.53	.320	5.99	133	4.74	117	10.33	-14.5
5	Ricky Nolasco R. Nolasco	15	2017	LAA	6	.714	33	.286	33	4.92	143	1	1	0	181.0	205	99	102	35	58	3	0	3	787	4	7.11	2.88	2.47	1.74	18.2	7.4	1.45	.310	5.07	115	5.09	116	10.19	-14.3
6	Clayton Richard C. Richard	15	2017	SDP	8	.652	32	.348	32	4.79	151	2	1	0	197.1	240	105	114	24	59	8	0	6	858	7	6.89	2.69	2.56	1.09	17.6	6.9	1.52	.351	5.20	114	4.22	99	10.95	1.1
7	Jeff Samardzija J. Samardzija	15	2017	SFG	9	.625	32	.375	32	4.42	205	1	1	0	207.2	204	102	107	30	32	6	0	1	847	2	8.88	1.39	6.41	1.30	24.2	3.8	1.14	.303	4.64	106	3.60	89	8.84	10.6
8	Bartolo Colon B. Colon	14	2017	TOT	7	.667	28	.333	28	6.48	89	1	0	0	143.0	192	103	112	28	35	1	0	0	648	1	5.60	2.20	2.54	1.76	13.7	5.4	1.59	.331	7.05	147	5.21	119	12.08	-13.4
9	Derek Holland D. Holland	14	2017	CWS	7	.667	29	.333	26	6.20	104	0	0	0	135.0	156	93	106	31	75	8	0	2	626	7	6.93	5.00	1.39	2.07	16.6	12.0	1.71	.306	7.07	145	6.44	145	10.40	-29.8
10	Ivan Nova I. Nova	14	2017	PIT	11	.560	31	.440	31	4.14	131	2	1	0	187.0	203	86	96	29	36	7	0	2	785	8	6.30	1.73	3.64	1.40	16.7	4.6	1.28	.299	4.62	97	4.45	103	9.77	-2.9
11	Joe Biagini J. Biagini	13	2017	TOR	3	.813	44	.188	18	5.34	97	0	0	1	119.2	125	71	78	15	42	2	3	0	517	6	7.30	3.16	2.31	1.13	18.8	8.1	1.40	.305	5.87	122	4.26	96	9.40	2.3
12	Patrick Corbin P. Corbin	13	2017	ARI	14	.481	33	.519	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
13	Mike Foltynewicz M. Foltynewicz	13	2017	ATL	10	.565	29	.435	28	4.79	143	0	0	0	154.0	169	82	86	20	59	10	0	2	692	4	8.36	3.45	2.42	1.17	20.7	8.5	1.48	.324	5.03	108	4.33	101	9.88	-1
14	Miguel Gonzalez M. Gonzalez	13	2017	TOT	8	.619	27	.381	27	4.62	100	0	0	0	156.0	167	80	88	22	55	6	0	2	684	1	5.77	3.17	1.82	1.27	14.6	8.0	1.42	.289	5.08	106	4.87	109	9.63	-7.1
15	Jason Hammel J. Hammel	13	2017	KCR	8	.619	32	.381	32	5.29	145	0	0	0	180.1	209	106	109	26	48	9	0	2	804	7	7.24	2.40	3.02	1.30	18.0	6.0	1.43	.318	5.44	119	4.36	102	10.43	-1.5
16	Ian Kennedy I. Kennedy	13	2017	KCR	5	.722	30	.278	30	5.38	131	0	0	0	154.0	143	92	99	34	61	5	0	2	655	4	7.66	3.56	2.15	1.99	20.0	9.3	1.32	.257	5.79	121	5.60	130	8.36	-22.9
17	Mike Leake M. Leake	13	2017	TOT	10	.565	31	.435	31	3.92	130	0	0	0	186.0	201	81	93	20	37	9	0	3	782	3	6.29	1.79	3.51	0.97	16.6	4.7	1.28	.309	4.50	94	3.89	92	9.73	7.2
18	Julio Teheran J. Teheran	13	2017	ATL	11	.542	32	.458	32	4.49	151	0	0	0	188.1	186	94	103	31	72	7	0	3	812	6	7.22	3.44	2.10	1.48	18.6	8.9	1.37	.281	4.92	102	4.94	116	8.89	-14.3
19	Jordan Zimmermann J. Zimmermann	13	2017	DET	8	.619	29	.381	29	6.08	103	0	0	0	160.0	204	108	111	29	44	7	0	2	713	3	5.79	2.47	2.34	1.63	14.4	6.2	1.55	.330	6.24	138	5.18	117	11.48	-13.1
20	Chris Archer C. Archer	12	2017	TBR	10	.545	34	.455	34	4.07	249	0	0	0	201.0	193	91	101	27	60	5	0	0	852	15	11.15	2.69	4.15	1.21	29.2	7.0	1.26	.325	4.52	97	3.39	80	8.64	19.7
21	Ty Blach T. Blach	12	2017	SFG	8	.600	34	.400	24	4.78	73	1	1	0	163.2	179	87	91	17	43	1	3	2	692	3	4.01	2.36	1.70	0.93	10.5	6.2	1.36	.290	5.00	115	4.41	109	9.84	-7.3
22	Gerrit Cole G. Cole	12	2017	PIT	12	.500	33	.500	33	4.26	196	0	0	0	203.0	199	96	98	31	55	4	0	1	849	7	8.69	2.44	3.56	1.37	23.1	6.5	1.25	.298	4.34	100	4.08	94	8.82	5.4
23	Yu Darvish Y. Darvish	12	2017	TOT	10	.545	31	.455	31	3.86	209	0	0	0	186.2	159	80	83	27	58	6	0	1	766	12	10.08	2.80	3.60	1.30	27.3	7.6	1.16	.283	4.00	84	3.82	85	7.67	13.5
24	Michael Fulmer M. Fulmer	12	2017	DET	10	.545	25	.455	25	3.83	114	1	0	0	164.2	150	70	80	13	40	8	0	2	676	3	6.23	2.19	2.85	0.71	16.9	5.9	1.15	.273	4.37	87	3.67	83	8.20	13.9
25	Kevin Gausman K. Gausman	12	2017	BAL	11	.522	34	.478	34	4.68	179	0	0	0	186.2	208	97	99	29	71	5	0	0	816	8	8.63	3.42	2.52	1.40	21.9	8.7	1.49	.336	4.77	105	4.47	98	10.03	2