When each MLB season starts, the last thing a team wants to deal with is a significant injury, or worse, a major injury to one of their top players.
Yes, a team can work around that. The St. Louis Cardinals did alright last year without Adam Wainwright, after all. Still, when you have lingering injury questions before the season even starts, they need to be addressed, and the sooner they are, the better.
Here is each team's biggest injury concern heading into the season. For the most part, I'm looking at short-term injuries, though there will be clear exceptions.