What happens if your ball moves after you mark it?
No penalty — if your ball or marker moves accidentally while you're marking and lifting on the green, simply replace the ball in its original spot under Rule 9.7a. This covers the marker shifting or the ball rolling during the act of marking, as long as it wasn't deliberate.
The situation
You place your ball marker behind your ball on the green, then as you lift the ball or even just afterwards, the ball marker shifts or the ball rolls slightly before you pick it up. For a complete overview of the correct marking procedure in different situations, see how to mark the spot of a ball at rest.
The rule
Under Rule 9.7a, if a ball marker accidentally moves during any part of the marking and lifting process, there is no penalty — you replace the ball in its original position (or put the marker back where it was). This also applies if the ball rolls away during the act of marking: no penalty, replace it. The key word is "accidentally" — this rule protects normal, careful play.
Real example
You're on the green and place your marker behind your ball, but in doing so you accidentally nudge the ball with your finger and it rolls three inches. No penalty — replace the ball in front of the marker and continue.
What to do on the course
- Replace the ball (or marker) in the original position — estimate if necessary; if that estimate later turns out to be off, Rule 1.3b(2) protects your reasonable judgment
- No stroke added, just correct the situation
- If someone else's ball or equipment moved yours after you marked and lifted it: same result — no penalty, replace it
- Remember that only you or someone you authorize may replace your lifted ball — see who can replace a lifted ball for details. In Foursomes, your partner is automatically authorized to mark, lift, and replace your side's ball — see can my partner mark and lift my ball in Foursomes
Penalty
No penalty. Replace the ball in its original position.
Exceptions that change the answer
- the player or opponent gets no penalty for lifting the player’s ball or accidentally causing it to move → there is also no penalty for lifting or accidentally moving the player’s ball-marker
Frequently asked questions
What if I accidentally knock my ball while placing the marker behind it?
No penalty under Rule 9.7a — replace the ball in its original position in front of the marker and play on. The rule protects normal, careful marking even if you nudge the ball with your finger or the marker.
Does it matter if the ball rolls after I've lifted it but before I replace it?
If the ball moves after you've lifted it but the marker stayed put, you still replace the ball on the original spot with no penalty — the key is whether the movement was accidental during the marking process.
What if my playing partner's equipment or ball moves my marked ball?
Same result — no penalty to anyone, and you replace your ball on its original spot. Rule 9.7a applies whether you, your partner, or outside influence caused the accidental movement.
Do I need to call a rules official or announce this to my group?
Not required — just replace the ball correctly and continue play. It's good practice to mention it to your marker or playing partners so everyone agrees on the original spot.
What if I deliberately move the ball or marker instead of accidentally?
That's different — deliberate movement of a ball in play on the putting green is a one-stroke penalty under Rule 9.4b, and you must replace the ball. Rule 9.7a only protects accidental movement during marking.