The stress frature is more concerning and I am worried about his propensity for injury in general. I don't know if any injury is 100% fluke because some people get injured easier than others doing the same things. I think the ability to stay healthy has to be viewed as a skill. His most recent injury occurred because he completely layed out diving for a fly ball, so the injury is not surprising. Still, maybe another player doesn't get hurt as bad doing that. Maybe Greene is the kind of player that can't play that way and needs to play more conservatively. He hits well enough, so it's OK if he misses a few of balls over the course of the season in order to porotect himself.