Player stats

Pitching Strikeout Percentage 2020

The percentage of batters faced who strike out.

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, 2020. Data refreshed Sep 12, 2026, 7:39 AM UTC.

No. 1 / Pitching Strikeout Percentage / 2020

Shane Bieber

CLE

41.1%

Season leader

Pitching Strikeout Percentage2020 season
#	Player	Team	IP	BF	K%
1	S. BieberShane Bieber	CLE	77.1	297	41.1%
2	J. deGromJacob deGrom	NYM	68.0	268	38.8%
3	T. BauerTrevor Bauer	CIN	73.0	278	36.0%
4	D. LametDinelson Lamet	SD	69.0	267	34.8%
5	L. GiolitoLucas Giolito	CWS	72.1	288	33.7%
6	A. NolaAaron Nola	PHI	71.1	289	33.2%
7	G. ColeGerrit Cole	NYY	73.0	288	32.6%
8	K. MaedaKenta Maeda	MIN	66.2	248	32.3%
9	Y. DarvishYu Darvish	CHC	76.0	297	31.3%
10	M. ScherzerMax Scherzer	WSH	67.1	295	31.2%
11	B. WoodruffBrandon Woodruff	MIL	73.2	293	31.1%
12	L. CastilloLuis Castillo	CIN	70.0	292	30.5%
13	C. CarrascoCarlos Carrasco	CLE	68.0	280	29.3%
14	Z. GallenZac Gallen	AZ	72.0	291	28.2%
15	D. BundyDylan Bundy	LAA	65.2	267	27.0%
16	F. ValdezFramber Valdez	HOU	70.2	288	26.4%
17	H. Jin RyuHyun Jin Ryu	TOR	67.0	275	26.2%
18	L. LynnLance Lynn	TEX	84.0	344	25.9%
19	J. BerríosJosé Berríos	MIN	63.0	271	25.1%
20	A. HeaneyAndrew Heaney	LAA	66.2	279	25.1%
21	Z. GreinkeZack Greinke	HOU	67.0	273	24.5%
22	B. SingerBrady Singer	KC	64.1	263	23.2%
23	M. GonzalesMarco Gonzales	SEA	69.2	277	23.1%
24	Z. DaviesZach Davies	SD	69.1	276	22.8%
25	M. BoydMatthew Boyd	DET	60.1	271	22.1%
26	A. CivaleAaron Civale	CLE	74.0	312	22.1%
27	G. MárquezGermán Márquez	COL	81.2	344	21.2%
28	C. BassittChris Bassitt	OAK	63.0	261	21.1%
29	A. WainwrightAdam Wainwright	STL	65.2	262	20.6%
30	P. CorbinPatrick Corbin	WSH	65.2	295	20.3%
31	K. HendricksKyle Hendricks	CHC	81.1	315	20.3%
32	J. CuetoJohnny Cueto	SF	63.1	277	20.2%
33	K. GibsonKyle Gibson	TEX	67.1	301	19.3%
34	Z. WheelerZack Wheeler	PHI	71.0	288	18.4%
35	A. MillsAlec Mills	CHC	62.1	252	18.3%
36	M. PérezMartín Pérez	BOS	62.0	262	17.6%
37	D. KeuchelDallas Keuchel	CWS	63.1	257	16.3%
38	J. LesterJon Lester	CHC	61.0	265	15.8%
39	K. FreelandKyle Freeland	COL	70.2	304	15.1%
40	A. SenzatelaAntonio Senzatela	COL	73.1	303	13.5%

K%: The percentage of batters faced who strike out.

Understanding Pitching Strikeout Percentage

The percentage of batters faced who strike out.

Formula: 100 × SO ÷ BF

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.