Player stats

Strikeouts per 9 Innings 2019

Strikeouts per nine innings pitched. Unlike K%, the denominator is innings rather than batters faced.

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, 2019. Data refreshed Sep 12, 2026, 7:39 AM UTC.

No. 1 / Strikeouts per 9 Innings / 2019

Gerrit Cole

HOU

13.82

Season leader

Strikeouts per 9 Innings2019 season
#	Player	Team	IP	BF	K/9
1	G. ColeGerrit Cole	HOU	212.1	817	13.82
2	M. ScherzerMax Scherzer	WSH	172.1	693	12.69
3	R. RayRobbie Ray	AZ	174.1	747	12.13
4	J. VerlanderJustin Verlander	HOU	223.0	847	12.11
5	L. GiolitoLucas Giolito	CWS	176.2	705	11.62
6	M. BoydMatthew Boyd	DET	185.1	788	11.56
7	Y. DarvishYu Darvish	CHC	178.2	731	11.54
8	J. deGromJacob deGrom	NYM	204.0	804	11.25
9	C. MortonCharlie Morton	TB	194.2	790	11.10
10	S. BieberShane Bieber	CLE	214.1	859	10.88
11	S. StrasburgStephen Strasburg	WSH	209.0	841	10.81
12	T. BauerTrevor Bauer	CIN	213.0	911	10.69
13	L. CastilloLuis Castillo	CIN	190.2	781	10.67
14	L. LynnLance Lynn	TEX	208.1	875	10.63
15	W. BuehlerWalker Buehler	LAD	182.1	737	10.61
16	P. CorbinPatrick Corbin	WSH	202.0	835	10.60
17	J. FlahertyJack Flaherty	STL	196.1	772	10.59
18	S. GraySonny Gray	CIN	175.1	708	10.52
19	A. NolaAaron Nola	PHI	202.1	852	10.19
20	C. KershawClayton Kershaw	LAD	178.1	706	9.54
21	E. RodriguezEduardo Rodriguez	BOS	203.1	859	9.43
22	M. FriedMax Fried	ATL	165.2	702	9.40
23	N. SyndergaardNoah Syndergaard	NYM	197.2	825	9.20
24	G. MárquezGermán Márquez	COL	174.0	721	9.05
25	A. DeSclafaniAnthony DeSclafani	CIN	166.2	696	9.02
26	Z. WheelerZack Wheeler	NYM	195.1	828	8.98
27	M. BumgarnerMadison Bumgarner	SF	207.2	844	8.80
28	J. BerríosJosé Berríos	MIN	200.1	842	8.76
29	J. LucchesiJoey Lucchesi	SD	163.2	686	8.69
30	J. LesterJon Lester	CHC	171.2	764	8.65
31	M. MinorMike Minor	TEX	208.1	863	8.64
32	T. RoarkTanner Roark	OAK	165.1	722	8.60
33	J. JunisJakob Junis	KC	175.1	771	8.42
34	J. TeheranJulio Teheran	ATL	174.2	754	8.35
35	J. MusgroveJoe Musgrove	PIT	170.1	718	8.30
36	R. LópezReynaldo López	CWS	184.0	809	8.27
37	H. BaileyHomer Bailey	OAK	163.1	696	8.21
38	Z. GreinkeZack Greinke	HOU	208.2	810	8.07
39	H. Jin RyuHyun Jin Ryu	LAD	182.2	723	8.03
40	A. WainwrightAdam Wainwright	STL	171.2	745	8.02
41	J. QuintanaJose Quintana	CHC	171.0	745	8.00
42	M. StromanMarcus Stroman	NYM	184.1	774	7.76
43	M. KellyMerrill Kelly	AZ	183.1	777	7.76
44	K. HendricksKyle Hendricks	CHC	177.0	730	7.63
45	W. MileyWade Miley	HOU	167.1	720	7.53
46	R. PorcelloRick Porcello	BOS	174.1	768	7.38
47	M. TanakaMasahiro Tanaka	NYY	182.0	759	7.37
48	M. PérezMartín Pérez	MIN	165.1	737	7.35
49	M. SorokaMichael Soroka	ATL	174.2	701	7.32
50	A. SánchezAníbal Sánchez	WSH	166.0	712	7.27

K/9: Strikeouts per nine innings pitched. Unlike K%, the denominator is innings rather than batters faced.

Understanding Strikeouts per 9 Innings

Strikeouts per nine innings pitched. Unlike K%, the denominator is innings rather than batters faced.

Formula: 27 × SO ÷ 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.