A personal mark helps you recognize your ball when brands and numbers match.
Plain-language guide · Rules 6.3a and 7.3. Use the current official text and your round’s Local Rules for a ruling.
What to know
If you reasonably need to lift it to identify it, mark its position first and clean only as much as needed for identification.
On the course
Add initials or dots before the round. In long grass, confirm the mark rather than guessing.