Accept a prize that is not allowed under Rule 3: Prizes;
Play in a golf competition as a professional;
Accept payment or compensation for giving instruction that is not allowed under Rule 4: Instruction;
Are employed (including being self-employed) as a golf club or driving range professional; or
Hold membership of an association for professional golfers.
An amateur who takes any of these actions becomes a non-amateur and remains a non-amateur until being reinstated as an amateur (see Rule 5: Reinstatement as an Amateur Golfer).