[5 sport ref]

Dealing with the umpire base coaches, the first time it happens I tell them I can make the call without your help-thank you. Never have had another problem the rest of the day with them. In terms with an illegal pitch if a coach mentions it I will usually not call it the next time but the second time. Just a tidbit I picked up at a clinic from a college umpire just to prevent anyone thinking that the coach can influence my call by mentioning it. In regard to leaving early and it is mentioned by a fan, I would let the runner know I am watching them but I would still be hesitant if it was close to call it on the next play but not on the second play for the same reason not anyone to think they could get a call for mentioning it. If it was blantant I would have to call it. Just MHO.