Olympic champion Usain Bolt ran 19.58 seconds for victory in the 200 metres at the Lausanne Diamond League meeting on Thursday while Yohan Blake equalled the third fastest time ever to win the 100 in 9.69.
Aussies Cate Campbell and Patty Mills are both attending their fourth Olympics. Mills, a basketballer who plays for the San Antonio Spurs in the NBA, will be the first indigenous Australian selected to carry the flag for the Opening Ceremony.