What is out of bounds in golf?

Out of bounds (OB) is the area beyond the course boundary, typically marked with white stakes or fences. A ball is out of bounds only when the entire ball has crossed the boundary line — if any part of the ball touches or is inside the line, it is still in play.

White stakes themselves are out of bounds objects: if your ball strikes a white stake and bounces outside the boundary, it is still OB.

The rule: stroke and distance

When your ball is OB or you cannot find it within the 3-minute search time, the only option under the standard Rules of Golf is stroke and distance:

Return to the exact point from which you played the previous stroke.
Play from there with a 1-stroke penalty.
Result: you lose one stroke and all the distance gained.

If you drove from the tee and your ball is OB, your next shot will be your third stroke from the tee.

The provisional ball: how and when to play it

Whenever there is a chance your ball may be OB or lost outside a penalty area, you should play a provisional ball before going to look for it.

How to declare it correctly:

Before leaving to search for the original ball, announce it: "I'm going to play a provisional ball."
Play from the same point as the original (or as close as possible on the tee).
Go look for the original. You have 3 minutes.
If you find the original ball in bounds and in play, you must play it and abandon the provisional without penalty.
If the original is OB or cannot be found, the provisional becomes your ball in play with a 1-stroke penalty.

Important: If you don't declare the provisional as such, any additional ball you play automatically becomes the ball in play with a penalty, and the original can no longer be searched for.

Local rule alternative (Model E-5)

Many clubs offer the Model E-5 local rule which allows players, instead of returning to the original point, to drop near the estimated point where the ball crossed the boundary with a 2-stroke penalty (instead of 1 stroke + distance).

This rule only applies if the club has activated it in its local conditions sheet. If it's not active, the only option is stroke and distance.

Penalty

1 stroke + distance (standard rule). With local rule E-5 active: 2 strokes, no need to return to the previous point.

Tactical tips

Whenever you suspect your ball might be OB, play the provisional immediately from the tee. The most common mistake: going to find the ball, seeing it's OB, and having to walk back to the tee — losing time and adding frustration on top of the penalty.
On a tight par 4, it's sometimes better tactically to accept the risk of OB with an iron off the tee rather than going for a driver and potentially adding stroke and distance.
If you're playing a course with the E-5 local rule active, check the local conditions sheet before teeing off. Note it on your scorecard to avoid disputes later.

Frequently asked questions

Can I drop near where it crossed OB without playing a provisional? No, unless the club has the E-5 local rule active. Without it, you must return to the original point.

What if I didn't see where the ball landed? If there's no certainty it's OB but you can't find it in 3 minutes, it's considered lost. The consequence is the same: stroke and distance from the previous point.

How long do I have to search? Exactly 3 minutes from the moment you arrive at the area where you estimate the ball to be.

Out of Bounds (OB) in Golf