Player stats

Swing Percentage Inside the Zone 2021

How often the batter swings at a pitch inside the strike zone. MLBDB counts delivered pitches, including bunts. Missing results show N/A; zone rates require at least 95% location coverage. For 2018 through 2024, MLBDB estimates pitch locations inside or outside the zone using recorded coordinates and batter zone heights. From 2025, MLB's recorded zone labels are used. These locations do not describe the umpire's call.

Season

At least 100 pitches inside the zone in this season. MLBDB counts delivered pitches, including bunts. Caught foul tips count as whiffs. Automatic count awards are excluded. Zone rates require at least 95% location coverage; unknown results remain unavailable. Data through December 31, 2021. Data refreshed Sep 11, 2026, 5:03 PM UTC.

No. 1 / Swing Percentage Inside the Zone / 2021

Luis Robert Jr.

CWS

85.1%

Season leader

Swing Percentage Inside the Zone2021 season
#	Player	Team	Zone pitches	Zone coverage	Z-Swing%
1	L. Robert Jr.Luis Robert Jr.	CWS	455	99.3%	85.1%
2	T. NidoTomás Nido	NYM	220	100.0%	84.5%
3	J. McNeilJeff McNeil	NYM	767	100.0%	83.8%
4	W. AstudilloWillians Astudillo	MIN	289	100.0%	83.7%
5	A. MondesiAdalberto Mondesi	KC	269	100.0%	83.3%
6	O. AlbiesOzzie Albies	ATL	1223	100.0%	82.5%
7	H. AlbertoHanser Alberto	KC	399	100.0%	82.0%
8	K. CalhounKole Calhoun	AZ	345	100.0%	82.0%
9	A. GarcíaAvisaíl García	MIL	818	100.0%	81.9%
10	C. SeagerCorey Seager	LAD	673	100.0%	81.7%
11	Y. PozoYohel Pozo	TEX	118	100.0%	81.4%
12	R. RuizRio Ruiz	COL	251	100.0%	81.3%
13	K. TuckerKyle Tucker	HOU	1043	100.0%	81.1%
14	C. WalkerChristian Walker	AZ	857	100.0%	80.9%
15	C. RaleighCal Raleigh	SEA	285	100.0%	80.7%
16	F. Tatis Jr.Fernando Tatis Jr.	SD	937	100.0%	80.3%
17	W. DifoWilmer Difo	PIT	462	100.0%	79.9%
18	K. DavisKhris Davis	OAK	231	100.0%	79.7%
19	B. BichetteBo Bichette	TOR	1233	100.0%	79.5%
20	D. PetersDJ Peters	TEX	440	100.0%	79.3%
21	N. SenzelNick Senzel	CIN	197	100.0%	79.2%
22	T. AndersonTim Anderson	CWS	985	99.4%	79.1%
23	J. FuentesJoshua Fuentes	COL	491	100.0%	79.0%
24	N. CastellanosNick Castellanos	CIN	939	100.0%	78.8%
25	B. BeltBrandon Belt	SF	753	100.0%	78.8%
26	J. AlfaroJorge Alfaro	MIA	493	100.0%	78.7%
27	S. PerezSalvador Perez	KC	996	100.0%	78.6%
28	L. RaleyLuke Raley	LAD	144	100.0%	78.5%
29	E. GonzálezErik González	PIT	385	100.0%	78.4%
30	B. LoweBrandon Lowe	TB	1088	100.0%	78.3%
31	C. PacheCristian Pache	ATL	120	100.0%	78.3%
32	D. SantanaDanny Santana	BOS	257	100.0%	78.2%
33	D. GregoriusDidi Gregorius	PHI	772	100.0%	78.0%
34	N. GordonNick Gordon	MIN	390	100.0%	77.9%
35	R. DeversRafael Devers	BOS	1166	100.0%	77.8%
36	J. MusgroveJoe Musgrove	SD	108	100.0%	77.8%
37	B. BuxtonByron Buxton	MIN	446	100.0%	77.6%
38	F. FreemanFreddie Freeman	ATL	1315	100.0%	77.6%
39	B. CrawfordBrandon Crawford	SF	1019	100.0%	77.6%
40	T. NaquinTyler Naquin	CIN	828	100.0%	77.4%
41	A. GiménezAndrés Giménez	CLE	397	98.7%	77.3%
42	H. RamosHenry Ramos	AZ	101	100.0%	77.2%
43	D. JohnsonDaniel Johnson	CLE	155	100.0%	76.8%
44	G. HerediaGuillermo Heredia	ATL	637	100.0%	76.8%
45	J. MartinezJ.D. Martinez	BOS	1152	100.0%	76.7%
46	C. ArroyoChristian Arroyo	BOS	322	100.0%	76.4%
47	J. DavisJ.D. Davis	NYM	429	100.0%	76.2%
48	M. ChavisMichael Chavis	PIT	214	100.0%	76.2%
49	R. MountcastleRyan Mountcastle	BAL	1026	100.0%	76.1%
50	Y. MolinaYadier Molina	STL	818	100.0%	76.0%

Z-Swing%: How often the batter swings at a pitch inside the strike zone. MLBDB counts delivered pitches, including bunts. Missing results show N/A; zone rates require at least 95% location coverage. For 2018 through 2024, MLBDB estimates pitch locations inside or outside the zone using recorded coordinates and batter zone heights. From 2025, MLB's recorded zone labels are used. These locations do not describe the umpire's call.

Understanding Swing Percentage Inside the Zone

Formula: 100 × swings inside the zone ÷ pitches inside the zone

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 11, 2026, 5:03 PM UTC.