Defending Olympic tennis champions Bob and Mike Bryan have pulled out of the Rio Olympics less than a week before the opening ceremony citing health concerns over the Zika virus.
The IB Times reported the following athletes have also pulled out of the Rio Olympics.
Rory McIlroy (Golf), Vijay Singh (Golf), Thomas Berdych (Tennis), Adam Scott (Golf), Louis Oosthuizen (Golf), Shane Lowry (Golf), Charl Schwartzel (Golf), Dominic Thiem (Tennis), Feliciano Lopez (Tennis), Bernard Tomic (Tennis), Tejay van Garderen (Cycling), Nick Kyrgios (Tennis), Jason Day (Golf), Dustin Johnson (Golf), Jordan Spieth (Golf), Milos Raonic (Tennis), Simona Halep (Tennis).
