I posted an analysis of Jose Valverde’s early-season troubles on THT Live yesterday.

Also, Dan Brooks (Jnai) has been doing some very good work with PITCHf/x over at the Sons of Sam Horn discussion board. His PITCHf/x wiki is well worth checking out.

As part of the discussion of Dan’s work at the Book blog, I made a chart of pitch speed vs. spin deflection angle for a typical right-handed pitcher.

Typical RHP speed vs. spin deflection angle