Little Ball Indecision

[IRISHMAFIA]

Lot of opinions, but not one rule citation.

As noted, the "plane" means absolutely nothing, including in MLB unless there is an unpublished interpretation (not in the rule book).

The ball is not stuck, lodged in or have passed through any fence or structure or is it unavailable to the defense to play.

To rule this a GRD, the ball would have to be dead. There is no rule to substantiate a dead ball. However, if you rule the top of the fence a dead ball territory, you must also rule that any ball which hits the top of the fence dead. And a catch by a player which climbs to the top of the fence (which, by rule, is permissible), no catch.