Former US Open champion Bianca Andreescu prevailed over in-form Garbine Muguruza 3-6, 6-3, 6-2 to reach the Miami Open quarter-finals on Monday while reigning US and Australian Open champion Naomi Osaka extended her win streak to 23 matches by defeating Belgian 16th seed Elise Mertens 6-3, 6-3.
Top-ranked defending champion Ashleigh Barty battled into the quarter-finals by outlasting former world No 1 Victoria Azarenka 6-1, 1-6, 6-2 while Ukraine’s fifth-seeded Elina Svitolina rallied to defeat Czech ninth seed Petra Kvitova 2-6, 7-5, 7-5.
Second seed Osaka will next face Greek 23rd seed Maria Sakkari, who outlasted US 29th seed Jessica Pegula 6-4, 2-6, 7-6 (8/6).
While Barty, who had to save a match point on the way to a three-set victory over Kristina Kucova in the second round, plays next against seventh seed Aryna Sabalenka, who downed Czech 19th seed Marketa Vondrousova 6-1, 6-2.
On the men’s side, second seed Stefanos Tsitsipas defeated 28th seed Kei Nishikori 6-3, 3-6, 6-1 after an hour and 56 minutes to reach the last 16.
Russian fourth seed Andrey Rublev routed 29th seed Marton Fucsovics 6-2, 6-1, to reach the fourth round.
The 23-year-old from Moscow will next face Croatia’s 32-year-old Marin Cilic, the world number 45 who beat Italy’s 19-year-old Lorenzo Musetti 6-3, 6-4.