World number two Jordan Spieth is looking forward to representing the United States at the upcoming Olympic Games in Rio de Janeiro, despite concerns over the Zika virus. 

Australian pair Marc Leishman and Adam Scott have already pulled out of contention for Rio 2016, while world number one Jason Day remains unsure.

Rory McIlroy was initially fearful of contracting the virus, but admitted he is now "at ease" after seeking advice over its effects. But Spieth has had no such concerns, insisting he would not go if the threat was deemed to be "significant".

"Being an Olympian is a tremendous honour," Spieth said ahead of the U.S. Open as he looks to defend his title at Oakmont. "Do I think being an Olympian outweighs any significant health threat? No. If I thought that the threat was significant, I certainly would not go.

"But based on what's come to my knowledge at this point, it seems like it's going to be an extremely memorable experience. I look forward to trying to win a gold [medal] for the United States."