Miami Open - WTA 2R start

Second round commenced in Miami Open - WTA 1000.

2021 Miami Open - a WTA 1000 tournament, on Hard Outdoor, in Miami, Florida, USA, 22 March - 4 April 2021.

Event not held last year due to COVID-19.

Defending champion (2019):

Ashleigh Barty (12) who defeated Karolina Pliskova (5) 7-6(1) 6-3

Second round results:

- Ashleigh Barty (1) defeated qualifier Kristina Kucova 6-3 4-6 7-5

- Jelena Ostapenko defeated lucky loser Kirsten Flipkens 6-2 5-7 6-3

- Angelique Kerber (24) defeated qualifier Renata Zarazua 6-0 6-0

- Victoria Azarenka (14) received a walkover from Laura Siegemund due to a knee injury 

- Belinda Bencic (11) defeated Zarina Diyas 6-2 6-1

- Marketa Vondrousova (19) defeated Wang Qiang 6-4 6-4

- Veronika Kudermetova (32) defeated Danielle Collins 6-3 6-2

- Aryna Sabalenka (7) defeated qualifier Tsvetana Pironkova 0-6 6-3 7-6(9)

- Simona Halep (3) defeated Caroline Garcia 3-6 6-4 6-0

- Anastasija Sevastova defeated CoCo Gauff (31) 1-6 6-2 6-3

- Wildcard Ana Konjuh defeated Madison Keys (18) 6-4 6-2

- Iga Swiatek (15) defeated Barbora Krejcikova 6-4 6-2

- Petra Kvitova (9) defeated Alizé Cornet 6-0 6-4

- Johanna Konta (17) defeated Magda Linette 6-4 7-5

- Ekaterina Alexandrova (30) defeated Nadia Podoroska 6-0 6-4

- Elina Svitolina (5) defeated Shelby Rogers 3-6 7-5 6-3