5.6 Retired Athletes  Returning to Competition    5.6.1 If an International -Level Athlete or National -Level Athlete in World Lacrosse ’s Registered Testing Pool retires and then wishes to return to active participation in sport, the Athlete shall not compete in International Event s or National Event s until the Athlete  has made himself or herself available for Testing , by giving six (6) months prior written notice to World Lacrosse  and their National Anti -Doping Organization .