Greg Bird was due to play a large part over the team's season, but now we won't be seeing him at all in 2016. Prospects break your heart all the time and sometimes they get seriously hurt before things fall apart for them. A torn labrum is a pretty serious issue, but there are at least two examples that prove this kind of injury, at least for a hitter, isn't actually the end of the world, and maybe everything will be ok in the end.
You don't have to even look beyond the Yankees to find evidence that a shoulder injury isn't a death sentence.