[physicsref]

Enough with the dictionary wars. I have a suggestion.

If you pass on the foul and award the ball as in the situation previously mentioned and the coach wants an explanation, a simple "hand on the ball coach" works great. He may say "He hacked the wrist", but "I saw hand on the ball coach."

If you call the foul and need to give an explanation, "He whacked him on the wrist coach"

No need to get in a tizzy over those old college anatomy courses, see it rather as another way to implement your judgment.

In most cases, I'm going with the first option, but there are a lot of variables, and saying "my way or the highway" about this hypothetical play seems to say there is no need to exercise judgment.