Walker Buehler had the most quality starts in 2021, with 27.

	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	Walker Buehler W. Buehler	27	2021	LAD	33	16	4	.800	33	2.47	212	0	0	0	207.2	149	57	61	19	52	6	0	2	815	5	9.19	2.25	4.08	0.82	26.0	6.4	0.97	.247	2.64	6.46
2	Robbie Ray R. Ray	23	2021	TOR	32	13	7	.650	32	2.84	248	0	0	0	193.1	150	61	62	33	52	4	0	0	773	5	11.54	2.42	4.77	1.54	32.1	6.7	1.04	.268	2.89	6.98
3	Sandy Alcantara S. Alcantara	23	2021	MIA	33	9	15	.375	33	3.19	201	1	0	0	205.2	171	73	85	21	50	10	0	2	837	6	8.80	2.19	4.02	0.92	24.0	6.0	1.07	.270	3.72	7.48
4	Adam Wainwright A. Wainwright	22	2021	STL	32	17	7	.708	32	3.05	174	3	1	0	206.1	168	70	72	21	50	9	0	3	828	4	7.59	2.18	3.48	0.92	21.0	6.0	1.06	.256	3.14	7.33
5	Frankie Montas Jr. F. Montas Jr.	20	2021	OAK	32	13	9	.591	32	3.37	207	0	0	0	187.0	164	70	79	20	57	7	0	1	778	11	9.96	2.74	3.63	0.96	26.6	7.3	1.18	.296	3.80	7.89
6	Zack Wheeler Z. Wheeler	20	2021	PHI	32	14	10	.583	32	2.78	247	3	2	0	213.1	169	66	72	16	46	8	0	1	849	6	10.42	1.94	5.37	0.68	29.1	5.4	1.01	.288	3.04	7.13
7	Kevin Gausman K. Gausman	20	2021	SFG	33	14	6	.700	33	2.81	227	0	0	0	192.0	150	60	66	20	50	4	0	1	775	7	10.64	2.34	4.54	0.94	29.3	6.5	1.04	.274	3.09	7.03
8	Brandon Woodruff B. Woodruff	20	2021	MIL	30	9	10	.474	30	2.56	211	0	0	0	179.1	130	51	54	18	43	7	0	0	708	2	10.59	2.16	4.91	0.90	29.8	6.1	0.96	.261	2.71	6.52
9	Charlie Morton C. Morton	19	2021	ATL	33	14	6	.700	33	3.34	216	0	0	0	185.2	136	69	77	16	58	17	0	1	756	5	10.47	2.81	3.72	0.78	28.6	7.7	1.04	.267	3.73	6.59
10	Max Fried M. Fried	19	2021	ATL	28	14	7	.667	28	3.04	158	2	2	0	165.2	139	56	61	15	41	7	0	0	667	7	8.58	2.23	3.85	0.81	23.7	6.1	1.09	.278	3.31	7.55
11	Kyle Gibson K. Gibson	19	2021	TOT	31	10	9	.526	30	3.71	155	0	0	0	182.0	158	75	78	17	64	8	0	2	754	2	7.66	3.16	2.42	0.84	20.6	8.5	1.22	.276	3.86	7.81
12	Kyle Hendricks K. Hendricks	19	2021	CHC	32	14	7	.667	32	4.77	131	1	0	0	181.0	200	96	101	31	44	13	0	3	785	2	6.51	2.19	2.98	1.54	16.7	5.6	1.35	.299	5.02	9.94
13	Max Scherzer M. Scherzer	18	2021	TOT	30	15	4	.789	30	2.46	236	1	0	0	179.1	119	49	53	23	36	10	0	0	693	2	11.84	1.81	6.56	1.15	34.1	5.2	0.86	.247	2.66	5.97
14	Corbin Burnes C. Burnes	18	2021	MIL	28	11	5	.688	28	2.43	234	0	0	0	167.0	123	45	47	7	34	6	0	0	657	5	12.61	1.83	6.88	0.38	35.6	5.2	0.94	.309	2.53	6.63
15	Luis Castillo L. Castillo	18	2021	CIN	33	8	16	.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
16	Gerrit Cole G. Cole	18	2021	NYY	30	16	8	.667	30	3.23	243	2	1	0	181.1	151	65	69	24	41	2	0	0	726	5	12.06	2.03	5.93	1.19	33.5	5.6	1.06	.305	3.42	7.49
17	José Berríos J. Berríos	17	2021	TOT	32	12	9	.571	32	3.52	204	1	0	0	192.0	159	75	83	22	45	15	0	0	781	3	9.56	2.11	4.53	1.03	26.1	5.8	1.06	.277	3.89	7.45
18	Germán Márquez G. Márquez	17	2021	COL	32	12	11	.522	32	4.40	176	3	1	0	180.0	165	88	92	21	64	4	0	5	756	15	8.80	3.20	2.75	1.05	23.3	8.5	1.27	.293	4.60	8.25
19	Marcus Stroman M. Stroman	16	2021	NYM	33	10	13	.435	33	3.02	158	0	0	0	179.0	161	60	70	17	44	7	0	2	730	7	7.94	2.21	3.59	0.85	21.6	6.0	1.15	.286	3.52	8.09
20	Chris Bassitt C. Bassitt	16	2021	OAK	27	12	4	.750	27	3.15	159	1	1	0	157.1	127	55	55	15	39	11	0	1	637	5	9.10	2.23	4.08	0.86	25.0	6.1	1.06	.271	3.15	7.26
21	Wade Miley W. Miley	15	2021	CIN	28	12	7	.632	28	3.37	125	1	1	0	163.0	166	61	64	17	50	3	0	0	690	2	6.90	2.76	2.50	0.94	18.1	7.2	1.33	.301	3.53	9.17
22	Anthony DeSclafani A. DeSclafani	15	2021	SFG	31	13	7	.650	31	3.17	152	2	2	0	167.2	141	59	61	19	42	2	0	1	676	7	8.16	2.25	3.62	1.02	22.5	6.2	1.09	.265	3.27	7.57
23	Sean Manaea S. Manaea	15	2021	OAK	32	11	10	.524	32	3.91	194	2	2	0	179.1	179	78	79	25	41	9	0	0	754	5	9.74	2.06	4.73	1.25	25.7	5.4	1.23	.318	3.96	8.98
24	Chris Flexen C. Flexen	15	2021	SEA	31	14	6	.700	31	3.61	125	0	0	0	179.2	185	72	74	19	40	4	0	0	741	2	6.26	2.00	3.13	0.95	16.9	5.4	1.25	.300	3.71	9.27
25	Cole Irvin C. Irvin	15	2021	OAK	32	10	15	.400	32	4.24	125	0	0	0	178.1	195	84	94	23	42	9	0	0	768	3	6.31	2.12	2.98	1.16	16.3	5.5	1.33	.302	4.74	9.84