Here's a great analysis by Pizza Cutter over at the Statistically Speaking blog. Cutter takes a hard look at sacrifice fly decisions by third base coaches and finds that coaches are so conservative in their decisions that they are probably costing close to 100 runs a season. It's a very thorough analysis, and a great example of how coaches, managers and probably even players tend to be too conservative when making in-game decisions.
Dave was called a "national treasure" by Rob Neyer. Seriously. Comments about this article can be sent to him through the miracle of e-mail.