Roger Federer and Martina Hingis briefly paired up at a exhibition event at the Brisbane tournament earlier this year but now will play in the Rio Olympics.
Federer and Hingis won the Hopman Cup for Switzerland back in 2001.
Federer and Hingis will be hoping to do Switzerland proud in the Rio Games next summer.
Federer carries his national flag at the opening ceremony of the 2004 Olympic Games in Athens.
Hingis and Sania Mirza of India won the women's doubles crown at Wimbledon this year.