Originally written on Baseball Prospectus  |  Last updated 11/17/14
The knuckleball is a difficult pitch to hit because of its unpredictable movement. But few analyses have ever looked at another component of the knuckleball: its speed. According to the man himself, R.A. Dickey varies the speed on his knuckleball according to the situation. But how much, and in what way? Is this a common feature of knuckleballers, or relatively unique to Dickey? In the PITCHf/x era, we really have only two knuckleballers with sufficient data to analyze, R.A. Dickey and Tim Wakefield (there are others, such as Charlies Haeger and Zink, but those pitchers have appeared only a very small number of times). To answer this question, I pooled knuckleballs by count (1-2, 3-0, etc.) and looked at the standard deviation of the pitch mph within those counts. To visualize this data, I have plotted count, not as two separate categorical variables, but as count linear weights—the run value of being in a particular count (such as 0-2). This makes “count” one continuous axi...
MORE FROM YARDBARKER

Ray Rice wins appeal, can sign with any team

Athletics deal Josh Donaldson to Blue Jays for Brett Lawrie

Ohio governor decrees playoff committee honorary Ohioans

Lance Stephenson becoming a problem with the Hornets?

Tony Romo: I promise I'll be better next week

Seahawks could wait to address Russell Wilson's contract

LIKE WHAT YOU SEE?
GET THE DAILY NEWSLETTER:

Report: SMU football to hire Clemson offensive coordinator

Dez Bryant: Eagles were ‘kinda cheap’

Hockey goalie rushes into stands to perform CPR on fan

49ers CEO Jed York apologizes for unacceptable performance

Family searching for missing Ohio State football player

CM Punk opens up about leaving WWE, says he'll never return

What if the Chargers refused to trade Eli Manning?

Why is there a red seat hanging in the Mall of America?

WATCH: Mickey Rourke TKO’d a man half his age in Moscow

What's next for the 49ers?

The most tone-deaf tweet ever?

Five bold predictions for Week 13 in the NFL

Brady Quinn pens 'note' to Jets quarterback Geno Smith

Bills center Eric Wood gained 7.4 pounds at Thanksgiving

Cubs reliever somehow OK after being involved in awful accident

Seahawks players throw shade at 49ers after victory

Five takeaways from NFL's Thanksgiving Day action

Things to be thankful for in the NBA this season

All Sports News
Delivered to your inbox
You'll also receive Yardbarker's daily Top 10, featuring the best sports stories from around the web. Customize your newsletter to get articles on your favorite sports and teams. And the best part? It's free!

By clicking "Sign Me Up", you have read and agreed to the Fox Sports Digital Privacy Policy and Terms of Use. You can opt out at any time. For more information, please see our Privacy Policy.

What if the Chargers didn't trade Eli?

Dez Bryant: Eagles were ‘kinda cheap’

Ray Rice wins appeal, can sign with any team

What's next for the 49ers?

The most tone-deaf tweet ever?

Is Lance a problem for the Hornets?

5 NFL takeaways from Thanksgiving

WATCH: Ronda Rousey talks Eminem

CM Punk opens up about leaving WWE

Wrigley renovation may be delayed

Steelers could have been America's Team

John Beilein upset with ESPN

Today's Best Stuff
For Bloggers

Join the Yardbarker Network for more promotion, traffic, and money.

Company Info
Help
What is Yardbarker?

Yardbarker is the largest network of sports blogs and pro athlete blogs on the web. This site is the hub of the Yardbarker Network, where our editors and algorithms curate the best sports content from our network and beyond.