Okay ... assuming 'cent' meant FU ... and re-reading his posted query ...( I can't believe they didn't send him to the parking lot ) ... Being a newb ump, I am not aware of any rule ( ASA, NSA or Fed ) that says only the Coach whom attended the pre game conference may ask to speak to an Umpire about a call, or ask an Ump if he/she will ask for help on a call ... But if I had to tell 'cent' more than once that I did not want to speak to him, only his Asst. Coach and he came onto the field to
"challenge" my call ... well then hey-hey-hey-Goodbye
... When I am Coaching though, we typically send the Head Coach out on all requests to speak to an Umpire about getting clarification on a call, unless it happens right in front of a Coach in his Coaches Box ... Back in Rec ( Dixie Youth ) Regionals or Districts, when I was an Asst. Coach protesting a non-approved bat ... at some point they sent me back to the dugout and would only let the Head Coach speak to them while they resolved the issue and got the call correct ... I am interested to see what the more experienced Blues have on this ...