Analytics MLB

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)

# Team Player Whiff%
1 Nationals Patrick Corbin 53.5%
2 Reds Robert Stephenson 51.6%
3 Twins Kyle Gibson 50.8%
4 Rays Diego Castillo 50.0%
5 Giants Will Smith 49.6%
6 Royals Scott Barlow 49.6%
7 Diamondbacks Edwin Jackson 49.5%
8 Rockies Jairo Diaz 48.9%
9 Tigers Matthew Boyd 48.7%
10 Cardinals Giovanny Gallegos 47.9%
11 Rays Andrew Kittredge 47.7%
12 Braves Luke Jackson 47.6%
13 Indians Mike Clevinger 47.6%
14 Reds Luis Castillo 47.3%
15 Astros Gerrit Cole 46.4%
16 Cardinals Jack Flaherty 45.7%
17 Diamondbacks Taylor Clarke 45.6%
18 Orioles Dylan Bundy 44.9%
19 Diamondbacks Robbie Ray 44.8%
20 Mariners Justus Sheffield 44.6%


Lowest Whiff% Rates from 2019 (Post AS Break)

# Team Player Whiff%
1 Rangers Mike Minor 16.4%
2 Reds/Athletics Tanner Roark 17.0%
3 Athletics Mike Fiers 17.0%
4 Red Sox Rick Porcello 17.8%
5 Phillies Zach Eflin 20.0%
6 Mets Steven Matz 21.7%
7 Angels Jaime Barria 21.8%
8 Cardinals Miles Mikolas 22.1%
9 Mariners Yusei Kikuchi 22.8%
10 Tigers Jordan Zimmermann 25.1%
11 Indians Adam Plutko 25.5%
12 Rockies Kyle Freeland 25.6%
13 Marlins Caleb Smith 26.4%
14 Orioles Aaron Brooks 27.9%
15 Padres Luis Perdomo 28.6%
16 Mets Zack Wheeler 28.6%
17 Rangers Adrian Sampson 28.7%
18 Athletics Brett Anderson 28.7%
19 Cardinals John Brebbia 29.1%
20 D-Backs/Astros Zack Greinke 29.7%


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.


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: