Ethan Ewing and Morgan Cibilic are the last Australian surfers standing in the Rio Pro after navigating their way to the quarter-finals in Saquarema, Brazil.
The women's field was cut down to the final four with teen phenom Tya Zebrowski making her first semi-final by downing five-time world champion Carissa Moore, 12.70 to 7.77.
Zebrowski, 15, overcame Australian great Stephanie Gilmore in the opening round of the sixth tour stop of the year.