As pitchers and catchers report, here are the things to be watching:
1. Brad Bergesen's health - his injury last year was considered minor at first, but ended up ending his season. As Matt pointed out, he reinjured himself in an Orioles promotional commercial. We'll have to see how this will affect him, even though he says he will be fine well before Opening Day. That could leave an open slot or at least an opportunity for someone else to slip into the rotation.
2. Jake Arrieta's unexpected chance - we all thought the rotation was cemented together, but evidently Chris Tillman's spot is not guaranteed and Bergesen is uncertain due to his injury. I don't think it makes sense to abandon Tillman, but we'll see how things progress.
3. Building the bullpen - there are a lot of arms fighting for a spot, and even though some may seem like a lock, the competition could cause quite a stir. Someone will be left out. Matt Albers maybe?