Rule 17.1d, 19.2c
Lateral relief
Also searched as: lateral drop, two club-lengths, dropping sideways
You drop with one penalty stroke within two club-lengths, no nearer the hole. It is allowed for a red penalty area and for an unplayable ball.
The reference point depends on the situation:
- Red penalty area: the point where the ball last crossed the edge. The drop must be outside the penalty area.
- Unplayable ball: the spot of the ball. In a bunker the drop must stay in the bunker.
There is no lateral relief for a yellow penalty area.