Golf — Rule 18
Lost, out of bounds, or still provisional?
A ball disappearing from view does not tell you which Rule applies. The correct procedure depends on where the ball might be, how long the search has run, whether a penalty area is involved, what the player announced before playing another ball, and how far that second ball has been played.
Quick ruling: under the R&A and USGA 2023 Rules of Golf, a ball lost outside a penalty area or out of bounds normally requires stroke-and-distance relief: add one penalty stroke and play again from where the previous stroke was made. A properly announced provisional can save the return journey, but only in the circumstances allowed by Rule 18.3.
Decision path
Classify the missing ball before choosing relief
- Ask whether the ball might be out of bounds or lost outside a penalty area.
- If the answer is yes and the player has not gone forward to search, consider announcing and playing a provisional under Rule 18.3.
- Start the three-minute search period when the player or caddie begins searching in the likely area.
- If the original is found in time, identify it and determine where it lies.
- If it is lost outside a penalty area or out of bounds, continue under stroke and distance, using the provisional if it has properly become the ball in play.
- If it is known or virtually certain that the original is in a penalty area, apply Rule 17 rather than treating the ball as lost outside it.
Lost ball
The search limit is three minutes
Under R&A/USGA Rule 18.2a in the 2023 Rules, a ball is lost if it is not found within three minutes after the player or the player's caddie begins to search. Other people can help, but their searching before the player or caddie reaches the area does not necessarily start that player's search time.
If a ball is found within the three minutes but its identity is uncertain, the player receives a reasonable time to reach and identify it. That identification allowance does not create a fresh general search period.
Boundary test
All of the ball must be out
Rule 18.2a treats a ball at rest as out of bounds only when all of it is outside the course boundary edge. If any part of the ball lies on or touches the ground or another object inside the boundary edge—or is above the boundary edge—the ball remains in bounds.
The boundary edge is determined by the Committee's stakes, lines, walls, fences, and Local Rules. A player may stand out of bounds to strike a ball that is still on the course.
Stroke and distance
What the penalty actually means
Stroke and distance combines two consequences: one penalty stroke is added, and the next ball is played from where the previous stroke was made under Rule 14.6. The original stroke still counts.
For example, if a tee shot is out of bounds, the next stroke from the teeing area is the player's third: the original stroke, one penalty stroke, then the new stroke. If the previous stroke was made from the general area, penalty area, or bunker, Rule 14.6b uses a one-club-length relief area based on the estimated previous spot in the same course area and not nearer the hole.
When allowed
A provisional is not available for every missing ball
Rule 18.3a allows a provisional when the original might be lost outside a penalty area or might be out of bounds. It is also allowed when the ball might be in a penalty area but could also be lost somewhere outside that area or be out of bounds.
If the only realistic location is a penalty area, a provisional under Rule 18.3 is not available. The player instead determines whether the “known or virtually certain” standard is met and applies Rule 17, or proceeds under stroke and distance if it is not.
Announcement
Make the status clear before the stroke
Before playing the second ball, Rule 18.3b requires the player to announce to someone that it is a provisional. The player can use the word “provisional” or otherwise make clear that the ball is being played provisionally under Rule 18.3.
“I am playing another” or “I will reload” does not by itself communicate provisional status. Without the required announcement, the new ball played from the previous place becomes the ball in play under stroke and distance, even if the player privately intended it to be provisional. If nobody is nearby to hear, the player may play and inform someone when possible.
Playing onward
The provisional can be struck more than once
A player may continue playing a provisional while it remains at the same distance from the hole as, or farther from the hole than, the estimated position of the original ball. Those strokes do not automatically make it the ball in play.
Once the player makes a stroke at the provisional from a spot nearer the hole than the estimated original-ball position, Rule 18.3c makes the provisional the ball in play under stroke and distance. The original is then no longer in play, even if found before the search time expires.
Final status
When the provisional becomes the ball in play
- The original is lost anywhere on the course except in a penalty area.
- The original is out of bounds.
- The provisional is played from a spot nearer the hole than the original ball's estimated position.
When one of those Rule 18.3c conditions is met, the provisional carries the one-stroke stroke-and-distance penalty and all strokes made with it count.
Abandoning it
When the original must be used
If the original is found on the course outside a penalty area within the search time, the player must abandon the provisional and play the original as it lies. The same is true when the original is found in a penalty area or is known or virtually certain to be there: the player must play it as it lies or use Rule 17 penalty relief.
Strokes made with a provisional before it is abandoned, including penalty strokes incurred solely by playing that provisional, do not count. Making another stroke at the abandoned provisional would be playing a wrong ball.
Important exception
Not every unlocated ball is “lost” for relief purposes
Rule 18.2b recognises other Rules when it is known or virtually certain that an unlocated ball was moved by an outside influence, is in or on a movable obstruction or abnormal course condition, is in a penalty area, or was deliberately deflected or stopped by a person. Those situations can allow substitution under the applicable Rule instead of the normal lost-ball result.
“Known or virtually certain” is a high evidence standard, not a player's best guess. The available facts—witnesses, ball flight, terrain, and where the ball could reasonably have finished—must support the conclusion.
Local Rule
Dropping near the boundary is not automatically available
The Committee may adopt Model Local Rule E-5, an alternative to stroke and distance for certain balls lost outside a penalty area or out of bounds. It uses a defined relief area and two penalty strokes, and it is generally intended for casual or lower-level play rather than high-level competition.
Players cannot invent this option during a round. If the scorecard, noticeboard, or Terms of the Competition do not put the Local Rule in effect, the core Rule 18 stroke-and-distance procedure applies.
Common errors
Four mistakes that change the score
- Searching for more than three minutes and then playing the late-found original.
- Playing a second ball without clearly announcing that it is provisional.
- Continuing with a provisional after the original was found in bounds within the search time.
- Taking a lateral drop where the ball crossed the boundary when no Local Rule authorises it.
Official references
Source material