Player stats

Quality Start Percentage 2023

The percentage of a pitcher's starts that qualify as quality starts. Read this alongside the number of starts.

Season

Minimum workload: one inning pitched per game. Completed seasons use the league's scheduled regular-season game count; seasons in progress use team games played. This is a general pitching minimum, not a relief-pitcher qualification rule. Data through December 31, 2023. Data refreshed Sep 12, 2026, 7:39 AM UTC.

No. 1 / Quality Start Percentage / 2023

Gerrit Cole

NYY

72.7%

Season leader

Quality Start Percentage2023 season
#	Player	Team	IP	BF	GS	QS%
1	G. ColeGerrit Cole	NYY	209.0	821	33	72.7%
2	L. WebbLogan Webb	SF	216.0	850	33	72.7%
3	J. SteeleJustin Steele	CHC	173.1	716	30	66.7%
4	Z. WheelerZack Wheeler	PHI	192.0	787	32	65.6%
5	K. GausmanKevin Gausman	TOR	185.0	763	31	64.5%
6	G. KirbyGeorge Kirby	SEA	190.2	757	31	64.5%
7	F. ValdezFramber Valdez	HOU	198.0	808	31	64.5%
8	C. BassittChris Bassitt	TOR	200.0	826	33	63.6%
9	B. SnellBlake Snell	SD	180.0	742	32	62.5%
10	J. MontgomeryJordan Montgomery	TEX	188.2	777	32	62.5%
11	P. LópezPablo López	MIN	194.0	801	32	62.5%
12	K. BradishKyle Bradish	BAL	168.2	671	30	60.0%
13	M. KellyMerrill Kelly	AZ	177.2	722	30	60.0%
14	C. BurnesCorbin Burnes	MIL	193.2	784	32	59.4%
15	Z. GallenZac Gallen	AZ	210.0	846	34	58.8%
16	L. GilbertLogan Gilbert	SEA	190.2	770	32	56.3%
17	S. StriderSpencer Strider	ATL	186.2	763	32	56.3%
18	M. KellerMitch Keller	PIT	194.1	825	32	56.3%
19	K. SengaKodai Senga	NYM	166.1	694	29	55.2%
20	Z. EflinZach Eflin	TB	177.2	703	31	54.8%
21	L. CastilloLuis Castillo	SEA	197.0	802	33	54.5%
22	F. PeraltaFreddy Peralta	MIL	165.2	680	30	53.3%
23	S. GraySonny Gray	MIN	184.0	754	32	53.1%
24	J. LuzardoJesús Luzardo	MIA	178.2	741	32	53.1%
25	J. VerlanderJustin Verlander	HOU	162.1	669	27	51.9%
26	B. ElderBryce Elder	ATL	174.2	732	31	51.6%
27	K. GibsonKyle Gibson	BAL	192.0	807	33	51.5%
28	J. BerríosJosé Berríos	TOR	189.2	782	32	46.9%
29	A. NolaAaron Nola	PHI	193.2	793	32	46.9%
30	P. CorbinPatrick Corbin	WSH	180.0	790	32	46.9%
31	S. AlcantaraSandy Alcantara	MIA	184.2	762	28	46.4%
32	D. DunningDane Dunning	TEX	172.2	722	26	46.2%
33	L. GiolitoLucas Giolito	CLE	184.1	794	33	45.5%
34	D. KremerDean Kremer	BAL	172.2	735	32	43.8%
35	J. OviedoJohan Oviedo	PIT	177.2	781	32	43.8%
36	L. LynnLance Lynn	LAD	183.2	808	32	40.6%
37	C. MortonCharlie Morton	ATL	163.1	716	30	40.0%
38	M. MikolasMiles Mikolas	STL	201.1	860	35	40.0%
39	D. CeaseDylan Cease	CWS	177.0	784	33	36.4%
40	T. WalkerTaijuan Walker	PHI	172.2	733	31	35.5%
41	C. JavierCristian Javier	HOU	162.0	687	31	35.5%
42	Y. KikuchiYusei Kikuchi	TOR	167.2	700	32	28.1%
43	J. SearsJP Sears	OAK	172.1	735	32	28.1%
44	J. LylesJordan Lyles	KC	177.2	748	31	12.9%

QS%: The percentage of a pitcher's starts that qualify as quality starts. Read this alongside the number of starts.

Understanding Quality Start Percentage

The percentage of a pitcher's starts that qualify as quality starts. Read this alongside the number of starts.

Formula: 100 × QS ÷ GS

Read rates alongside playing time. A small sample can produce an extreme result, and a missing value is different from zero.

Season rankings use regular-season records. A player has one combined row across teams; the team label identifies the associated team, not a separate team stint.

Source: MLB statistics and MLBDB derived measures. Formulas describe the measure above. Data refreshed Sep 12, 2026, 7:39 AM UTC.