Reigning US and Australian Open champion Naomi Osaka advanced to the Miami Open quarter-finals on Monday, stretching her win streak to 23 matches by defeating Belgian 16th seed Elise Mertens 6-3, 6-3.

Osaka advances while Barty ousts Azarenka at Miami Open

Top-seeded Daniil Medvedev hobbled into the fourth round of the Miami Open on Sunday, defying crippling leg cramps to beat Australian Alexei Popyrin 7-6 (7/3), 6-7 (7/9), 6-4.

Top-seeded Medvedev toils into Miami Open fourth round

Venus Williams crashed out of the Miami Open on Tuesday, losing her first round game in straight sets to Zarina Diyas of Kazakhstan. Diyas advanced to a second round meeting with Swiss 11th seed Belinda Bencic after completing a 6-2, 7-6 (12/10) victory in 1hr 28min on the Hard Rock Stadium's Grandstand court.

Venus Williams dumped out of Miami Open first round