WHAT IF MY ROCK…
When it comes to stones, the rule book makes provision for unusual happenings in a game
For instance, although it’s rare these days for stones to break—even with the tremendous force with which they are thrown by some of the top players—Rule 4 (2) covers just that situation. It reads as follows:
“If a stone is broken in play, a replacement stone shall be placed where the largest fragment comes to rest. The inside edge of the replacement stone shall be placed in the same position as the inside edge of the largest fragment with the assistance of a measuring stick.”
If the stone doesn’t break but merely flips over or comes to rest on its side, the rule book takes care of that situation in 4 (6): “A stone that rolls over in its course or comes to rest on its side or top shall be removed immediately from play.”
So it seems it’s better to have your rock break than flip over.