MLB: Highest and Lowest Whiff% on Sliders in 2019 (Post All-Star Break) – Pitchers Edition

A couple of days ago, we went over which hitters had the highest and lowest Whiff% rates during the month of September last season. Today, the pitchers get their turn, as we look at Whiff% rates for pitchers from last season.

Whiff% Rates on Sliders Post AS Break

When we went over Whiff% rates for hitters earlier this week, we used a slightly different method to calculate the percentages. Today we’ll use a different method, one that eliminates bunts, since bunts aren’t swings.

NOTE: Our data may differ slightly from data available on Baseball Savant. In order to qualify, batters must have swung at least 100 times at pitcher’s slider from July 11 to September 29.


Highest Whiff% Rates from 2019 (Post AS Break)

1NationalsPatrick Corbin53.5%
2RedsRobert Stephenson51.6%
3TwinsKyle Gibson50.8%
4RaysDiego Castillo50.0%
5GiantsWill Smith49.6%
6RoyalsScott Barlow49.6%
7DiamondbacksEdwin Jackson49.5%
8RockiesJairo Diaz48.9%
9TigersMatthew Boyd48.7%
10CardinalsGiovanny Gallegos47.9%
11RaysAndrew Kittredge47.7%
12BravesLuke Jackson47.6%
13IndiansMike Clevinger47.6%
14RedsLuis Castillo47.3%
15AstrosGerrit Cole46.4%
16CardinalsJack Flaherty45.7%
17DiamondbacksTaylor Clarke45.6%
18OriolesDylan Bundy44.9%
19DiamondbacksRobbie Ray44.8%
20MarinersJustus Sheffield44.6%



Lowest Whiff% Rates from 2019 (Post AS Break)

1RangersMike Minor16.4%
2Reds/AthleticsTanner Roark17.0%
3AthleticsMike Fiers17.0%
4Red SoxRick Porcello17.8%
5PhilliesZach Eflin20.0%
6MetsSteven Matz21.7%
7AngelsJaime Barria21.8%
8CardinalsMiles Mikolas22.1%
9MarinersYusei Kikuchi22.8%
10TigersJordan Zimmermann25.1%
11IndiansAdam Plutko25.5%
12RockiesKyle Freeland25.6%
13MarlinsCaleb Smith26.4%
14OriolesAaron Brooks27.9%
15PadresLuis Perdomo28.6%
16MetsZack Wheeler28.6%
17RangersAdrian Sampson28.7%
18AthleticsBrett Anderson28.7%
19CardinalsJohn Brebbia29.1%
20D-Backs/AstrosZack Greinke29.7%



Be sure to keep checking out the FH Freeway site for more news, player reports, and fantasy tips. And make sure to follow us on Twitter, as well as subscribe to our growing YouTube channel, where we’ll post player videos of up-and-coming prospects you should keep an eye on. And if you like what you see on our site, consider becoming a Patreon supporter.