Player stats

Walks per 9 Innings 2023

Walks allowed per nine innings pitched, including intentional walks.

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 / Walks per 9 Innings / 2023

George Kirby

SEA

0.90

Season leader, lower is better

Walks per 9 Innings2023 season, lower is better
#	Player	Team	IP	BF	BB/9
1	G. KirbyGeorge Kirby	SEA	190.2	757	0.90
2	Z. EflinZach Eflin	TB	177.2	703	1.22
3	L. WebbLogan Webb	SF	216.0	850	1.29
4	L. GilbertLogan Gilbert	SEA	190.2	770	1.70
5	M. MikolasMiles Mikolas	STL	201.1	860	1.74
6	Z. WheelerZack Wheeler	PHI	192.0	787	1.83
7	J. SteeleJustin Steele	CHC	173.1	716	1.87
8	Z. GallenZac Gallen	AZ	210.0	846	2.01
9	G. ColeGerrit Cole	NYY	209.0	821	2.07
10	A. NolaAaron Nola	PHI	193.2	793	2.09
11	P. LópezPablo López	MIN	194.0	801	2.23
12	J. LylesJordan Lyles	KC	177.2	748	2.28
13	J. MontgomeryJordan Montgomery	TEX	188.2	777	2.29
14	S. AlcantaraSandy Alcantara	MIA	184.2	762	2.34
15	K. BradishKyle Bradish	BAL	168.2	671	2.35
16	J. BerríosJosé Berríos	TOR	189.2	782	2.47
17	J. VerlanderJustin Verlander	HOU	162.1	669	2.49
18	M. KellerMitch Keller	PIT	194.1	825	2.55
19	L. CastilloLuis Castillo	SEA	197.0	802	2.56
20	Y. KikuchiYusei Kikuchi	TOR	167.2	700	2.58
21	K. GibsonKyle Gibson	BAL	192.0	807	2.58
22	F. ValdezFramber Valdez	HOU	198.0	808	2.59
23	C. BassittChris Bassitt	TOR	200.0	826	2.66
24	K. GausmanKevin Gausman	TOR	185.0	763	2.68
25	S. GraySonny Gray	MIN	184.0	754	2.69
26	J. SearsJP Sears	OAK	172.1	735	2.77
27	J. LuzardoJesús Luzardo	MIA	178.2	741	2.77
28	S. StriderSpencer Strider	ATL	186.2	763	2.80
29	P. CorbinPatrick Corbin	WSH	180.0	790	2.85
30	D. DunningDane Dunning	TEX	172.2	722	2.87
31	D. KremerDean Kremer	BAL	172.2	735	2.87
32	F. PeraltaFreddy Peralta	MIL	165.2	680	2.93
33	C. BurnesCorbin Burnes	MIL	193.2	784	3.07
34	B. ElderBryce Elder	ATL	174.2	732	3.25
35	L. LynnLance Lynn	LAD	183.2	808	3.28
36	C. JavierCristian Javier	HOU	162.0	687	3.44
37	M. KellyMerrill Kelly	AZ	177.2	722	3.50
38	L. GiolitoLucas Giolito	CLE	184.1	794	3.56
39	T. WalkerTaijuan Walker	PHI	172.2	733	3.70
40	D. CeaseDylan Cease	CWS	177.0	784	4.02
41	K. SengaKodai Senga	NYM	166.1	694	4.17
42	J. OviedoJohan Oviedo	PIT	177.2	781	4.20
43	C. MortonCharlie Morton	ATL	163.1	716	4.57
44	B. SnellBlake Snell	SD	180.0	742	4.95

BB/9: Walks allowed per nine innings pitched, including intentional walks.

Understanding Walks per 9 Innings

Walks allowed per nine innings pitched, including intentional walks.

Formula: 27 × BB ÷ outs recorded

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.