Coaches feel they have to say something sometimes; it's their obligation as coach. 

  I had a game last Friday.  Tie game at the end of regulation, 9 secs left.  A1 drives strong side right in front of me (Lead) and never tried to avoid B1 who was on the low block for the entire 9 seconds and never even flinched.  Tweet, PC with moderate sell because it is end of tie game.  After I finish reporting, coach asks me "was she set?"  I replied, "Coach, that was the easiest call all night."  He  replied "Looked pretty close to me."  He knew I had it right but he figured he had to say something.  First possession by A in OT the same player did the same thing except it was my P's call this time.  At that point the coach didn't say anything, just pulled her out of the game.  A ended up winning by 2 in double OT (B missed an 8 foot shot on the baseline or as time expired or it would have been 3OT's or more.  One of the best games I worked this year.
Mregor