[AtlUmpSteve]

Ted,

There is nothing in the rule that defines a player raising a hand making the ball in play or out of play. The reality is that a ball blocked or out of play is out and dead whether a player raises a hand or not, and a ball not blocked or out of play remains live even if a player raises a hand. Even if a player makes a play on a ball that the umpire knows is out of play, it is dead; the issue only exists if/when the umpire is unsure if the ball is in play or not.

Raising a hand is only a courtesy so the umpire knows to look and confirm; if the player keeps the umpire from knowing it was out of play, too bad, so sad, the offense gets everything they attain on the play.

Consider this third world example play. On a field with fence openings, the batter hits a fly ball clearly beyond the fence; a defensive player runs off the field, behind the fence, and catches the ball using the Willie Mays basket catch, so as to not raise a hand. Is this a catch on a live ball because the hand was never raised? Don't the rules make it uncatchable because the player is obviously established out of play, without any regard or reference to hand raised or not raised?

I wouldn't change the pregame reminder; I would just add clarification that the ball remains live and assumed playable until the umpire confirms the status as unplayable.