[FMadera]

First of all, the coach shouldn't be asking the scorer, all communication should go through the R2. But that's another topic...

We know the fair solution, which is what you gave. But then there's the real world solution/answer. I am personally aware of a match this past season (with two officials I know and respect) in which the same situation occurred, and the solution was basically, bottom line, the wrong player served, and the other team got the point.

There was a protest filed with the NCAA or the conference (don't recall who handled that part), and that was upheld as the correct ruling, despite the fact that the coach was given incorrect information. The wrong person served, and there's no rule that dictates allowing it or going back and fixing it.

I would imagine there will be a case scenario written up, and maybe a rule change, to allow for this to be fixed, but the problem might be a coach claiming they were told that person X was their server, when they were not told that.