ASA 2009 Casebook Play Confusion

[RKBUmp]

I dont necessarily agree with the statement that a player should know thier own coaches voice or instructions. Wearing a batting helmet completely changes how you hear, and any wind blowing across the ear holes makes it nearly impossible to hear anything with clarity. If we are going to consider verbal interference for a runner yelling mine or I got it on a fielder making a play on a pop up, why wouldnt the offense get the same consideration for a player yelling go before the catch?