A look into batter and pitcher strategies depending on count.

How Williams compares to batters today—and how that underscores a point.

Analysis of Ubaldo Jimenez’s 2011 performance using PITCHf/x data.

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

Tyler Clippard has one of the best fastballs in the league. What makes it so effective?