How Yu Darvish’s performance in Japan can be translated into major league expectations.

What if you could adjust DER? What would it tell you?

How good are catchers in blocking pitches?

Analyzing college batting and pitching requires measuring the effects of the new bat standard.

Jeff Mathis has been blazing a trail of awful since his major league debut. It is time that we acknowledge his efforts.

He ranks among among pitchers who have threatened no-hitters.

An update on Josh Kalk’s “anatomy of a pitch” series: What makes a four-seam successful.

Please, please, it is mean reversion.

Can we find any real information in home run waiting periods?

It’s been a year—time for new PITCHf/x-based benchmarks.