Ground rules (long)

[Macaroo]

Whatever is decided at the plate meeting will be the ground rules. If the home manager doesn't provide the criteria for DBT, ground rule doubles and home runs (or if the visiting coach argues), then the PU will decide what HE deems to be sensible. As long as they don't go against baseball rules (like my favorite attempt at a ground rule triple), just go with what everyone agrees to.

I would expect a ball that goes through a hole in the wall below the HR level wouold be a ground rule double, just like if it bounced over the fence, or rolled under the fence.