Zack Greinke had the most quality starts in 2015, with 30.

	NAME	QS	SEASON	TM	G	W	L	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	Zack Greinke Z. Greinke	30	2015	LAD	32	19	3	.864	32	1.66	200	1	0	0	222.2	148	41	43	14	40	5	0	1	843	7	8.08	1.62	5.00	0.57	23.7	4.7	0.84	.229	1.74	5.98
2	Jake Arrieta J. Arrieta	29	2015	CHC	33	22	6	.786	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	5.90
3	Clayton Kershaw C. Kershaw	27	2015	LAD	33	16	7	.696	33	2.13	301	4	3	0	232.2	163	55	62	15	42	5	0	1	890	9	11.64	1.62	7.17	0.58	33.8	4.7	0.88	.281	2.40	6.31
4	Dallas Keuchel D. Keuchel	27	2015	HOU	33	20	8	.714	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	7.18
5	John Lackey J. Lackey	26	2015	STL	33	13	10	.565	33	2.77	175	1	0	0	218.0	211	67	71	21	53	4	0	5	896	5	7.22	2.19	3.30	0.87	19.5	5.9	1.21	.295	2.93	8.71
6	Gerrit Cole G. Cole	25	2015	PIT	32	19	8	.704	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	7.92
7	Jose Quintana J. Quintana	25	2015	CWS	32	9	10	.474	32	3.36	177	1	1	0	206.1	218	77	81	16	44	8	0	4	862	5	7.72	1.92	4.02	0.70	20.5	5.1	1.27	.327	3.53	9.51
8	Garrett Richards G. Richards	24	2015	LAA	32	15	12	.556	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	7.86
9	David Price D. Price	24	2015	TOT	32	18	5	.783	32	2.45	225	3	1	0	220.1	190	60	70	17	47	3	0	2	888	4	9.19	1.92	4.79	0.69	25.3	5.3	1.08	.290	2.86	7.76
10	Chris Sale C. Sale	23	2015	CWS	31	13	11	.542	31	3.41	274	1	0	0	208.2	185	79	88	23	42	13	0	0	854	7	11.82	1.81	6.52	0.99	32.1	4.9	1.09	.323	3.80	7.98
11	Jacob deGrom J. deGrom	23	2015	NYM	30	14	8	.636	30	2.54	205	0	0	0	191.0	149	54	59	16	38	2	0	2	751	6	9.66	1.79	5.39	0.75	27.3	5.1	0.98	.271	2.78	7.02
12	Max Scherzer M. Scherzer	23	2015	WSH	33	14	12	.538	33	2.79	276	4	3	0	228.2	176	71	74	27	34	5	0	2	899	10	10.86	1.34	8.12	1.06	30.7	3.8	0.92	.268	2.91	6.93
13	Jordan Zimmermann J. Zimmermann	22	2015	WSH	33	13	10	.565	33	3.66	164	0	0	0	201.2	204	82	89	24	39	8	0	3	831	2	7.32	1.74	4.21	1.07	19.7	4.7	1.20	.302	3.97	9.10
14	Madison Bumgarner M. Bumgarner	22	2015	SFG	32	18	9	.667	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	7.46
15	Sonny Gray S. Gray	22	2015	OAK	31	14	7	.667	31	2.73	169	3	2	0	208.0	166	63	71	17	59	2	0	0	831	13	7.31	2.55	2.86	0.74	20.3	7.1	1.08	.255	3.07	7.18
16	Collin McHugh C. McHugh	21	2015	HOU	32	19	7	.731	32	3.89	171	0	0	0	203.2	207	88	89	19	53	9	0	2	859	5	7.56	2.34	3.23	0.84	19.9	6.2	1.28	.310	3.93	9.15
17	Matt Harvey M. Harvey	21	2015	NYM	29	13	8	.619	29	2.71	188	0	0	0	189.1	156	57	62	18	37	5	0	2	755	4	8.94	1.76	5.08	0.86	24.9	4.9	1.02	.272	2.95	7.42
18	Shelby Miller S. Miller	21	2015	ATL	33	6	17	.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
19	Tyson Ross T. Ross	21	2015	SDP	33	10	12	.455	33	3.26	212	1	0	0	196.0	172	71	78	9	84	8	0	3	823	14	9.73	3.86	2.52	0.41	25.8	10.2	1.31	.320	3.58	7.90
20	Cole Hamels C. Hamels	21	2015	TOT	32	13	8	.619	32	3.65	215	2	1	0	212.1	190	86	88	22	62	10	0	3	880	9	9.11	2.63	3.47	0.93	24.4	7.0	1.19	.294	3.73	8.05
21	Jon Lester J. Lester	21	2015	CHC	32	11	12	.478	32	3.34	207	1	0	0	205.0	183	76	83	16	47	7	0	0	828	8	9.09	2.06	4.40	0.70	25.0	5.7	1.12	.303	3.64	8.03
22	R.A. Dickey	20	2015	TOR	33	11	11	.500	33	3.91	126	2	0	0	214.1	195	93	97	25	61	11	0	1	884	9	5.29	2.56	2.07	1.05	14.3	6.9	1.19	.257	4.07	8.19
23	Wei-Yin Chen W. Chen	20	2015	BAL	31	11	8	.579	31	3.34	153	0	0	0	191.1	192	71	78	28	41	5	0	0	792	3	7.20	1.93	3.73	1.32	19.3	5.2	1.22	.290	3.67	9.03
24	Colby Lewis C. Lewis	20	2015	TEX	33	17	9	.654	33	4.66	142	2	1	0	204.2	211	106	114	26	42	11	0	2	861	5	6.24	1.85	3.38	1.14	16.5	4.9	1.24	.289	5.01	9.28
25	Felix Hernandez F. Hernandez	20	2015	SEA	31	18	9	.667	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	8.03