Federation Question

[MGKBLUE]

The key is the term In-flight.

A ball that goes off a defensive player or her glove and over the fence in fair territory, remains "in-flight" and therefore a home run.

A ball that hits the fence and then goes over after hitting a defensive player is no longer "in-flight" and therefore a ground rule double.

Another instance of a ball no longer being "in-flight" would be if the ball is hit and looks like a home run but hits a bird before going over the fence. In that case as soon as the ball hits the bird, it is by definition no longer "in-flight". Therefore, after hitting the bird, the balll still goes over the fence it would be ruled a double and not a home run.