Top-ranked Jason Day, Rory McIlroy and Adam Scott lead a host of men's golf stars who have withdrawn from the Rio Olympics, an exodus that could jeopardize the sport's return to the Games lineup after an 112-year absence. The mosquito-borne Zika virus, which can cause birth defects and severe illness, is mentioned by many -- including Australia's Day, Northern Ireland's McIlroy and Japan's 17th-ranked Hideki Matsuyama -- among a nightmare combination of Rio woes ahead of next month's Olympics and Monday's deadline to finalize rosters.
