Miami Open - WTA 1R start

First 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

First round results:

- Laura Siegemund defeated Christina McHale 6-3 7-5

- Zarina Diyas defeated Venus Williams 6-2 7-6(10)

- Barbora Krejcikova v Anna Blinkova 6-1 3-6 6-3 

- Magda Linette defeated wildcard Robin Montgomery 6-1 3-6 6-0

- Nadia Podoroska defeated wildcard Mayar Sherif 6-3 6-1

- Shelby Rogers defeated Madison Brengle 6-3 6-3

- Wildcard Wang Xinyu defeated Rebecca Peterson 6-2 6-2

- Kaia Kanepi defeated Lauren Davis 6-3 7-5

- Paula Badosa defeated Jil Teichmann 5-6 (retired)

- Arantxa Rus defeated Marie Bouzkova 6-3 6-2

- Sorana Cirstea defeated wildcard Katrina Scott 6-2 6-2

- Ajla Tomljanovic defeated Anastasia Potapova 7-5 6-0