Minor League Ball Gameday, Saturday, July 30th

Good afternoon everyone and welcome to the Saturday, July 30th edition of Minor League Ball Gameday. Here's your daily discussion thread to share information and observations for this evening's happenings across minor league and major league baseball.

****At Beyond the Boxscore, Ryan Romano concludes that Felipe Rivero has one of the best change-ups in baseball but that it hasn't helped him against left-handed hitters.

****Do you like watching nifty defensive plays? Then check out Nicolas Stellini's article at BytB.

****At The Hardball Times, Matthew Mata writes about "recasting PITCHf/x data in two dimensions." WARNING: People who did not pass calculus may not get a lot out of this. Unfortunately that includes me.