The inner workings of a slider, plus a few more words on curveballs.

A report from the first PITCHf/x summit.

Even more toonage

Here’s a hint: almost never

What are the prediction markets saying about the junior circuit?

Using the Three True Outcomes, a look at players who made a living putting the ball in play from 1920 to 1955.

Second and third, big hitter hitter up. Put him on?

On May 14, 1955, Dennis Martinez was born. “El Presidente” would go on to a 23-year career in the major leagues that included a perfect game, battles with alcoholism, and a distinguished record for games won.

The fast burners among catchers and outfielders.

A look at what attributes of a curveball makes it effective.