What happens if my ball has a mark but an identical ball is right next to it?

If an identical ball with the same identifying mark is in the same area, your mark no longer proves the ball is yours. You must then identify it by watching it come to rest or by finding a ball of the same brand, model, number, and condition where yours should be — unless another identical ball is there too, in which case you cannot identify either one.

When your mark stops working

Rule 7.2 lets you identify your ball by seeing your personal mark on it. But that method fails the moment an identical ball with an identical mark is also in the same area. At that point the mark proves nothing — both balls look the same, so you can't rely on it to claim one as yours.

The fallback: brand, model, number, and condition

If the mark doesn't decide it, you can still identify the ball by finding one with the same brand, model, number, and condition in the area where your ball is expected to be. This only works if there isn't another identical ball in that same area. If a second matching ball is there and you have no way to know which is yours, neither ball can be identified as yours.

Provisional ball you can't tell apart

If your provisional ball and your original ball are identical and you can't distinguish them, Rule 18.3c(2) takes over. That rule tells you how to proceed when the two balls are interchangeable and you don't know which is which.

Exceptions that change the answer

• You see your ball in a tree or other spot you can't reach → You still have to identify it under Rule 7.2 — you can't just assume it's yours. Use binoculars or a distance-measuring device to read the mark, or confirm someone saw it come to rest there after your stroke.

Frequently asked questions

My ball has a red dot, but another ball with a red dot is right next to it. Can I pick either one?

No. Because an identical ball with an identical mark is in the same area, the mark doesn't identify either ball. You must use another method under Rule 7.2, and if that also fails, neither ball is treated as yours.

What if two identical Titleist Pro V1 number 3 balls are in the rough and I can't tell which is mine?

If both balls match your brand, model, number, and condition and there's no way to know which is yours, you cannot identify either one. You'll have to proceed under the lost-ball rule.

I see my ball stuck in a tree but can't climb up. Can I just say it's mine?

No. You must positively identify it under Rule 7.2 — for example, by reading your mark through binoculars or confirming a witness saw it land there. Assumption isn't allowed.

Does this apply to my provisional ball too?

Yes. If your provisional and original ball are identical and you can't tell them apart, Rule 18.3c(2) applies instead of Rule 7.2.

What counts as the 'same area' for the identical-ball exception?

The Rules don't give a fixed distance. It means the general vicinity where both balls are found — for example, the same patch of rough, the same bunker, or the same penalty area — close enough that you can't tell which ball came from your shot.