Spring Training doesn’t start until the middle of February, but the Pittsburgh Pirates are already getting their roster ready with minor league contracts and non-roster invitees. Today we launched the 2012 Spring Training Tracker. For now it can be used to keep track of all of the non-roster invitees. The tracker has some early estimates on how many position battles there will be, and the breakdown of each position battle. It’s far too early for any of that to be complete, since the Pirates can still add players, and probably will add players in the following month.