4 Balks in 1 at bat

[umpjim]

Originally Posted by JR12
Following a HR, don't give F1 a new ball until the BR touches home plate. Does anybody follow this. I give him a ball, so he can rub it, get on the hill and get ready to pitch to the next batter.

Rule?

3.01(e) comment: which means it's an MLB caseplay.

Why I looked this up don't know. But, I thought like you, that it was just some instruction in the PBUC or MLBUM. I knew I had read it and registered it as a nice to know but not critical to enforce rule? instruction? caseplay?, , I had some free time and found it. Anyway, I found it and depending on what venue you call in it might or might not be a good idea.