Zack Greinke is one of my favorite baseball players of all time. Not everyone shares that opinion, as Greinke has some social anxiety issues and he rubs a lot of people the wrong way; but he’s a fascinating quote-machine and almost certainly one of the most cerebral, and interesting people in baseball. Greinke has always had a deep interest in scouting and Sabermetrics, and in his brief stint with the Brewers he was a fixture in their draft war room.
Perhaps my favorite thing Greinke ever did, was to conduct an experiment with his pitching over the course of a few seasons.