Adam has the story:
Yost recently took some time to clear off his desk at Maryvale Baseball Park, and among the items cleared away were a stack of books related to managing. They included "Baseball Between the Numbers," published by Baseball Prospectus, "The Book: Playing the Percentages in Baseball," published by Potomac Books, and "The Book on the Book: A Landmark Inquiry into Which Strategies in the Modern Game Actually Work," published by Thomas Dunne Books.Wow! Kinda sounds like a calculated political move, at least the mentioning it part, but still, I'm impressed. If you haven't checked out the books he mentioned, you should definitely do so:
"I've read them all," Yost said.