All defined terms are in italics and are listed alphabetically in the Definitions section - see pages 2235.

Except when a ball is in motion, if a player considers that a ball might assist any other player, he may:

a.

Lift the ball if it is his ball; or

b.

Have any other ball lifted.

A ball lifted under this Rule must be replaced (see Rule 20-3). The ball must not be cleaned, unless it lies on the putting green (see Rule 21).

In stroke play, a player required to lift his ball may play first rather than lift the ball.

In stroke play, if the Committee determines that competitors have agreed not to lift a ball that might assist any competitor, they are disqualified.

Note: When another ball is in motion, a ball that might influence the movement of the ball in motion must not be lifted.

Except when a ball is in motion, if a player considers that another ball might interfere with his play, he may have it lifted.

A ball lifted under this Rule must be replaced (see Rule 20-3). The ball must not be cleaned, unless it lies on the putting green (see Rule 21).

In stroke play, a player required to lift his ball may play first rather than lift the ball.

Note 1: Except on the putting green, a player may not lift his ball solely because he considers that it might interfere with the play of another player. If a player lifts his ball without being asked to do so, he incurs a penalty of one stroke for a breach of Rule 18-2, but there is no additional penalty under Rule 22.

Note 2: When another ball is in motion, a ball that might influence the movement of the ball in motion must not be lifted.

Match play - Loss of hole; Stroke play - Two strokes.