The 2013 roster is starting to take shape. There are still a few off-season questions that remain unanswered. Will the Pirates trade Garrett Jones? Who will win the 5th starter job? Will the Pirates add any free agent relievers? Will they add any more free agents, period?

One thing that is already apparent is that the roster will feature a lot of boom or bust players. I was listening to the recent Bucs Dugout podcast the other day, and David Todd described Francisco Liriano as a "high beta" player -- meaning there were plenty of realistic outcomes for his 2013 season, ranging from very bad to very good. That got me thinking about how many "high beta" players the Pirates have, which got me thinking about how many question marks the Pirates have on their roster. The roster is pretty close...

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