Career-threatening injuries are less about bones and muscles and body size, and more about ligaments and tendons, the strength and resilience of which are impossible for even the most experienced of scouts (and statisticians) to assess with any degree of certainty.
Since Sale hasn't had to have surgery, and none of us has operated on him, none of us are qualified to render an opinion on the strength and resilience of his tendons and ligaments.
The universe is the practical joke of the General at the expense of the Particular, quoth Frater Perdurabo, and laughed. The disciples nearest him wept, seeing the Universal Sorrow. Others laughed, seeing the Universal Joke. Others wept. Others laughed. Others wept because they couldn't see the Joke, and others laughed lest they should be thought not to see the Joke. But though FRATER laughed openly, he wept secretly; and really he neither laughed nor wept. Nor did he mean what he said.