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If you tee up your ball outside of the tee markers on the tee box, do you receive a penalty if you hit your shot without realising it?
The colours of the Ukrainian flag were also beamed on to the clubhouse during the state-of-the-art production at the home of golf.
If you and your playing partner haven't marked your balls and you can't tell which is which, this can cause a big problem with the rules of golf.
The R&A have joined other sporting bodies in condemning the Russian invasion of Ukraine.
The Open was the only major that was cancelled last year, but it will take place later this year with or without the fans.