A player plays his second shot, searches for his ball briefly and then goes back and drops another ball under Rule 27-1. Before he plays the dropped ball, and within the five-minute search period, the original ball is found. Is the player required to continue with the dropped ball?

A player, unable to find his ball, drops another ball in the area where his original ball was lost and plays that ball. What is the ruling?
n match play, the player loses the hole – Rule 20-7b.

A player’s ball lies on the putting green. The ball is oscillating because of the wind. May the player make a stroke at the ball while it oscillates?

A player whose ball lies in the rough close to the fairway is entitled to relief from an immovable obstruction. In obtaining relief under Rule 24-2b(i), may the player drop the ball on the fairway?

At a short hole, A's tee shot may be out of bounds or lost, so he plays a provisional ball, which he holes. A does not wish to look for his original ball. B, A's opponent or a fellow-competitor, goes to look for the original ball. When does the provisional ball become the ball in play?