Josh Greer
DFP Vendor
What Mmeece says above. If there isn't an up on the baseline (and we rarely have one on first and third) there isn't much use in asking for an appeal. But if there is, my catchers have been told to ask PU "can I get an appeal? (while pointing to the ump)". If they don't get a response on more than one occasion (and not over used), they have been told to lift their mask, make eye contact with their coach and shrug shoulders. It's about as direct you can get without showing up the PU.