Player stats

Pitching Walk Percentage 2018

The percentage of batters faced who walk, 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, 2018. Data refreshed Sep 12, 2026, 7:39 AM UTC.

No. 1 / Pitching Walk Percentage / 2018

Miles Mikolas

STL

3.6%

Season leader, lower is better

Pitching Walk Percentage2018 season, lower is better
#	Player	Team	IP	BF	BB%
1	M. MikolasMiles Mikolas	STL	200.2	808	3.6%
2	C. KluberCorey Kluber	CLE	215.0	842	4.0%
3	M. LeakeMike Leake	SEA	185.2	784	4.3%
4	J. VerlanderJustin Verlander	HOU	214.0	833	4.4%
5	M. GonzalesMarco Gonzales	SEA	166.2	686	4.7%
6	Z. GreinkeZack Greinke	AZ	207.2	839	5.1%
7	M. FiersMike Fiers	OAK	172.0	714	5.2%
8	K. HendricksKyle Hendricks	CHC	199.0	812	5.4%
9	C. CarrascoCarlos Carrasco	CLE	192.0	784	5.5%
10	J. deGromJacob deGrom	NYM	217.0	835	5.5%
11	J. JunisJakob Junis	KC	177.0	758	5.7%
12	J. TaillonJameson Taillon	PIT	191.0	785	5.9%
13	M. ScherzerMax Scherzer	WSH	220.2	866	5.9%
14	L. SeverinoLuis Severino	NYY	191.1	780	5.9%
15	R. PorcelloRick Porcello	BOS	191.1	808	5.9%
16	P. CorbinPatrick Corbin	AZ	200.0	800	6.0%
17	A. HeaneyAndrew Heaney	LAA	180.0	749	6.0%
18	W. LeBlancWade LeBlanc	SEA	162.0	662	6.0%
19	K. GausmanKevin Gausman	ATL	183.2	776	6.4%
20	T. RoarkTanner Roark	WSH	180.1	760	6.6%
21	D. KeuchelDallas Keuchel	HOU	204.2	874	6.6%
22	L. CastilloLuis Castillo	CIN	169.2	708	6.9%
23	D. PriceDavid Price	BOS	176.0	722	6.9%
24	J. HappJ.A. Happ	NYY	177.2	733	7.0%
25	G. MárquezGermán Márquez	COL	196.0	817	7.0%
26	A. NolaAaron Nola	PHI	212.1	831	7.0%
27	J. GrayJon Gray	COL	172.1	743	7.0%
28	J. UreñaJosé Ureña	MIA	174.0	712	7.2%
29	M. BoydMatthew Boyd	DET	170.1	709	7.2%
30	D. BundyDylan Bundy	BAL	171.2	750	7.2%
31	N. PivettaNick Pivetta	PHI	164.0	694	7.3%
32	Z. WheelerZack Wheeler	NYM	182.1	744	7.4%
33	J. BerríosJosé Berríos	MIN	192.1	797	7.7%
34	T. WilliamsTrevor Williams	PIT	170.2	701	7.8%
35	J. ArrietaJake Arrieta	PHI	172.2	724	7.9%
36	T. BauerTrevor Bauer	CLE	175.1	717	7.9%
37	T. AndersonTyler Anderson	COL	176.0	737	8.0%
38	G. ColeGerrit Cole	HOU	200.1	799	8.0%
39	C. HamelsCole Hamels	CHC	190.2	806	8.1%
40	M. ClevingerMike Clevinger	CLE	200.0	810	8.3%
41	K. FreelandKyle Freeland	COL	202.1	844	8.3%
42	J. LesterJon Lester	CHC	181.2	761	8.4%
43	J. ChacínJhoulys Chacín	MIL	192.2	796	8.9%
44	J. ShieldsJames Shields	CWS	204.2	871	9.0%
45	M. FoltynewiczMike Foltynewicz	ATL	183.0	744	9.1%
46	B. SnellBlake Snell	TB	180.2	700	9.1%
47	J. QuintanaJose Quintana	CHC	174.1	739	9.2%
48	C. MortonCharlie Morton	HOU	167.0	695	9.2%
49	D. HollandDerek Holland	SF	171.1	727	9.2%
50	R. LópezReynaldo López	CWS	188.2	799	9.4%

BB%: The percentage of batters faced who walk, including intentional walks.

Understanding Pitching Walk Percentage

The percentage of batters faced who walk, including intentional walks.

Formula: 100 × BB ÷ 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.