Ball deflected.........19-2 is you, your caddie, your equipment;        19-3 your opponent, his caddie or his equipment

19-2. By Player, Partner, Caddie or Equipment
If a player's ball is accidentally deflected or stopped by himself, his partner or either of their caddies or equipment, the player incurs a penalty of one stroke. The ball must be played as it lies, except when it comes to rest in or on the player's, his partner's or either of their caddies' clothes or equipment, in which case the ball must through the green or in a hazard be dropped, or on the putting green be placed, as near as possible to the spot directly under the place where the ball came to rest in or on the article, but not nearer the hole.

19-3. By Opponent, Caddie or Equipment in Match Play
If a player's ball is accidentally deflected or stopped by an opponent, his caddie or his equipment, there is no penalty. The player may, before another stroke is made by either side, cancel the stroke and play a ball without penalty as nearly as possible at the spot from which the original ball was last played (see Rule 20-5) or he may play the ball as it lies.