Troon - Angelo Que of the Philippines has become the 20th male golfer to pull out of the Olympics.
Que says the main reason for his withdrawal is the Zika virus.
The 37-year-old Filipino says he has given it a lot of thought and believes he is making the right decision. He says the health of his family comes first and he does not want to put himself at risk.
He has three victories on the Asian Tour, most recently in 2010.
Next on the list to replace Que will be Rodolfo Cazaubon on Mexico, meaning there still will be 34 countries represented in men's golf.