5.6 Retired Athletes  Returning to Competit ion 5.6.1  If an International - or National -Level Athlete  in a Registered  Testing  Pool retires and then wishes to return to active participation in sport, the Athlete  shall not compete in International  Events  or National  Events  until the Athlete  has made hi mself or herself available for Testing , by giving six (6) months prior written notice to the WSF and the Athlete’s  National Anti -Doping Organisation .