MIAMI: Top-ranked defending champion Ashleigh Barty advanced to the quarter-finals of the Miami Open on Monday (Mar 29) by outlasting former world number one Victoria Azarenka 6-1, 1-6, 6-2. Australia's Barty broke five times, the last when Azarenka netted a forehand volley to end matters after one hour and 52 minutes at Hard Rock Stadium. Barty, who had to save a match point on the way to a three-set victory over Kristina Kucova in the second round, will next face the winner of