Jason Day, the No. 1-ranked golfer in the world, became the latest player to pull out of the Olympics because of concern over the Zika virus.
“The reason for my decision is my concerns about the possible transmission of the Zika virus and the potential risks that it may present to my wife’s future pregnancies and to future members of our family,” he said in a statement.
Day, 28, of Australia, won last year’s P.G.A. tournament for his first major win.
Golf is returning to the Olympics this year after an absence since 1904.