A review by jdintr
The Baseball Codes: Beanballs, Sign Stealing, and Bench-Clearing Brawls: The Unwritten Rules of America's Pastime by Michael Duca, Jason Turbow

This was a fun trip through baseball history and the hidden side of the game. I felt like I was in the clubhouse with the players, and I really saw how important a "team" concept is in a sport that so often seems to be mano a mano. Admittedly, there was a little too much about the beanball and too little about a few codes I wonder about: like is the retired batter really supposed to stay away from the pitcher's mound?