Player stats

Swinging-Strike Percentage 2018

How often a delivered pitch produces a whiff, including caught foul tips. This divides whiffs by pitches, not swings. MLBDB counts delivered pitches, including bunts. Missing results show N/A; zone rates require at least 95% location coverage.

Season

At least 100 delivered pitches 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, 2018. Data refreshed Sep 11, 2026, 4:55 PM UTC.

No. 1 / Swinging-Strike Percentage / 2018

Tyler Chatwood

CHC

3.6%

Season leader, lower is better

Swinging-Strike Percentage2018 season, lower is better
#	Player	Team	Pitches	Zone coverage	SwStr%
1	T. ChatwoodTyler Chatwood	CHC	111	100.0%	3.6%
2	D. FletcherDavid Fletcher	LAA	1175	100.0%	4.1%
3	B. ValeraBreyvic Valera	BAL	286	96.5%	4.5%
4	L. GuillormeLuis Guillorme	NYM	290	100.0%	4.5%
5	N. MarkakisNick Markakis	ATL	2798	99.8%	4.6%
6	J. PanikJoe Panik	SF	1488	99.5%	4.6%
7	A. BregmanAlex Bregman	HOU	2821	99.8%	4.8%
8	E. SogardEric Sogard	MIL	463	99.8%	4.8%
9	M. BrantleyMichael Brantley	CLE	2286	98.5%	4.9%
10	B. GardnerBrett Gardner	NYY	2581	99.9%	5.0%
11	C. UtleyChase Utley	LAD	800	94.8%	5.0%
12	J. MauerJoe Mauer	MIN	2257	97.5%	5.3%
13	J. RamírezJosé Ramírez	CLE	3002	98.0%	5.3%
14	R. TorresRamón Torres	KC	114	99.1%	5.3%
15	T. MotterTaylor Motter	MIN	150	100.0%	5.3%
16	W. AstudilloWillians Astudillo	MIN	299	99.7%	5.4%
17	J. VargasJason Vargas	NYM	112	98.2%	5.4%
18	M. BettsMookie Betts	BOS	2582	99.6%	5.5%
19	I. KinslerIan Kinsler	BOS	2086	99.7%	5.6%
20	J. TurnerJustin Turner	LAD	1733	100.0%	5.7%
21	B. ZobristBen Zobrist	CHC	2018	99.9%	5.8%
22	D. LeMahieuDJ LeMahieu	COL	2191	99.5%	5.8%
23	A. EllisA.J. Ellis	SD	793	98.2%	5.8%
24	B. PoseyBuster Posey	SF	1679	100.0%	6.0%
25	J. LucroyJonathan Lucroy	OAK	1760	99.8%	6.0%
26	I. Kiner-FalefaIsiah Kiner-Falefa	TEX	1499	99.9%	6.1%
27	R. OrtegaRafael Ortega	MIA	556	99.8%	6.1%
28	J. SeguraJean Segura	SEA	2209	99.7%	6.2%
29	B. HoltBrock Holt	BOS	1473	99.8%	6.2%
30	J. WinkerJesse Winker	CIN	1256	99.4%	6.3%
31	A. SimmonsAndrelton Simmons	LAA	1980	99.7%	6.3%
32	A. FrazierAdam Frazier	PIT	1363	99.8%	6.3%
33	L. ForsytheLogan Forsythe	MIN	1700	99.8%	6.3%
34	B. PowellBoog Powell	OAK	112	100.0%	6.3%
35	R. GrossmanRobbie Grossman	MIN	1908	97.4%	6.4%
36	A. RendonAnthony Rendon	WSH	2365	99.8%	6.6%
37	J. PolancoJorge Polanco	MIN	1403	99.9%	6.6%
38	W. FloresWilmer Flores	NYM	1602	99.4%	6.6%
39	A. BlandinoAlex Blandino	CIN	594	99.3%	6.6%
40	T. TelisTomás Telis	MIA	137	99.3%	6.6%
41	D. MurphyDaniel Murphy	CHC	1275	99.2%	6.7%
42	J. IglesiasJose Iglesias	DET	1693	99.6%	6.7%
43	D. SpanDenard Span	SEA	1935	99.9%	6.7%
44	M. PradoMartín Prado	MIA	819	99.1%	6.7%
45	A. BarnesAustin Barnes	LAD	1023	97.4%	6.8%
46	J. PerazaJosé Peraza	CIN	2296	99.5%	6.9%
47	J. CentenoJuan Centeno	TEX	144	99.3%	6.9%
48	M. TroutMike Trout	LAA	2543	99.9%	7.0%
49	N. MartiniNick Martini	OAK	747	99.9%	7.0%
50	V. MartinezVictor Martinez	DET	1908	99.9%	7.0%

SwStr%: How often a delivered pitch produces a whiff, including caught foul tips. This divides whiffs by pitches, not swings. MLBDB counts delivered pitches, including bunts. Missing results show N/A; zone rates require at least 95% location coverage.

Understanding Swinging-Strike Percentage

Formula: 100 × swings and misses ÷ delivered pitches

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, 4:55 PM UTC.