A played B in a match. A drove out of bounds from the wrong teeing ground. B did not recall the stroke. What is the ruling?

Answer

As A played from the wrong teeing ground and B did not require him to cancel the stroke and play a ball from within the correct teeing ground, A's ball is deemed to have been put into play. Therefore, under Rule 27-1, A must drop a ball under penalty of one stroke, as nearly as possible at the spot from which the original ball was played, i.e. on the wrong teeing ground. He could not tee the ball because the original ball was not played from the teeing ground of the hole being played (Rule 20-5).