Rory McIlroy and Danny Willett have both spoken out about their fears about the zika virus in Brazil which may overshadow their participation in this summer’s Olympic golf event.

On Friday over a hundred scientists signed a letter to the World Health Organisation urging it to exert pressure on the Olympic authorities to postpone or move the games from Rio de Janiero.

Rory said that although he was thrilled to be competing for Ireland, he had been reading a lot of reports and “it might be worse than they’re saying and I’m monitoring the situation”.

Dann Willett said that as it stands at the minute everything should be OK for him to compete for England but if there was a subatantial risk to his wofe and infant son he would withdraw.

Currently Adam Scott, Marc Leishman and Vijay Singh have withdrawn citing the health threat as the readon, Louis Oosthuisen and Charl Schwartzel will also not be competing.