2021 Miami Open

The 2021 Miami Open was a professional hardcourt tennis tournament played from March 23 to April 4, 2021, on the grounds of Hard Rock Stadium in Miami Gardens, Florida. The 36th edition of the Miami Open, it was a Masters 1000 event on the 2021 ATP Tour, and a WTA 1000 event on the 2021 WTA Tour. The 2020 edition was postponed due to the onset of the COVID-19 pandemic in Florida.

Due to COVID-19 restrictions, capacity for each session was limited to 800–1,000 spectators, and spectators were only admitted in the three largest courts on the site; Hard Rock Stadium itself was not used. Roger Federer and Ashleigh Barty were the defending champions from 2019 in the men's and women's singles respectively. Barty successfully defended her title, defeating Bianca Andreescu in the final, 6–3, 4–0, retired. Federer did not attend the tournament.

Men's singles

 * 🇵🇱 Hubert Hurkacz def. 🇮🇹 Jannik Sinner 7–6(7–4), 6–4.

Women's singles

 * 🇦🇺 Ashleigh Barty def. 🇨🇦 Bianca Andreescu 6–3, 4–0 ret.

Men's doubles

 * Nikola Mektić / Mate Pavić def. 🇬🇧 Dan Evans / 🇬🇧 Neal Skupski 6–4, 6–4.

Women's doubles

 * 🇯🇵 Shuko Aoyama / 🇯🇵 Ena Shibahara def. 🇺🇸 Hayley Carter / 🇧🇷 Luisa Stefani, 6–2, 7–5.

Point distribution
* Players with byes receive first round points.

ATP singles main-draw entrants
The following are the seeded players. Seedings and ranking points based on ATP rankings as of March 22, 2021.

† The player did not qualify for the tournament in 2019. Accordingly, this was his points from the ATP Challenger Tour. ‡ The player did not qualify for the tournament in 2019. Accordingly, this was his 18th best result deducted instead. н The player used an exemption after the completion of the tournament in 2019. Accordingly, this was his points from the ATP Challenger Tour.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇪🇸 Carlos Alcaraz
 * 🇬🇧 Jack Draper
 * 🇫🇷 Hugo Gaston
 * 🇺🇸 Michael Mmoh
 * 🇬🇧 Andy Murray

The following players received entry using a protected ranking into the singles main draw:
 * Kevin Anderson
 * Lu Yen-hsun

The following players received entry from the qualifying draw:
 * 🇬🇧 Liam Broady
 * 🇺🇸 Ernesto Escobedo
 * 🇮🇹 Thomas Fabbiano
 * 🇺🇸 Bjorn Fratangelo
 * 🇦🇺 Thanasi Kokkinakis
 * 🇮🇹 Paolo Lorenzi
 * 🇺🇸 Mackenzie McDonald
 * 🇯🇵 Shintaro Mochizuki
 * 🇺🇸 Emilio Nava
 * 🇧🇷 Thiago Seyboth Wild
 * Alejandro Tabilo
 * 🇩🇪 Mischa Zverev

The following players received entry as a lucky losers:
 * 🇧🇦 Damir Džumhur
 * 🇮🇹 Federico Gaio

Withdrawals

 * Before the tournament
 * 🇪🇸 Pablo Andújar → replaced by 🇦🇷 Federico Coria
 * 🇪🇸 Pablo Carreño Busta → replaced by João Sousa
 * 🇮🇹 Matteo Berrettini → replaced by 🇺🇸 Denis Kudla
 * Borna Ćorić → replaced by 🇩🇪 Yannick Hanfmann
 * Pablo Cuevas → replaced by 🇪🇸 Pedro Martínez
 * 🇪🇸 Alejandro Davidovich Fokina → replaced by 🇸🇪 Mikael Ymer
 * 🇷🇸 Novak Djokovic → replaced by 🇦🇺 Alexei Popyrin
 * 🇬🇧 Kyle Edmund → replaced by 🇦🇺 James Duckworth
 * Roger Federer → replaced by 🇺🇸 Marcos Giron
 * 🇫🇷 Richard Gasquet → replaced by 🇯🇵 Yasutaka Uchiyama
 * 🇷🇸 Filip Krajinović → replaced by 🇧🇾 Ilya Ivashka
 * 🇦🇺 Nick Kyrgios → replaced by 🇫🇮 Emil Ruusuvuori
 * 🇦🇺 John Millman → replaced by 🇮🇹 Lorenzo Musetti
 * 🇫🇷 Gaël Monfils → replaced by 🇫🇷 Pierre-Hugues Herbert
 * 🇧🇷 Thiago Monteiro → replaced by 🇧🇦 Damir Džumhur
 * 🇫🇷 Corentin Moutet → replaced by 🇰🇿 Mikhail Kukushkin
 * 🇬🇧 Andy Murray → replaced by 🇮🇹 Federico Gaio
 * 🇪🇸 Rafael Nadal → replaced by Pedro Sousa
 * 🇦🇷 Guido Pella → replaced by Lloyd Harris
 * 🇪🇸 Albert Ramos Viñolas → replaced by 🇨🇴 Daniel Elahi Galán
 * 🇳🇴 Casper Ruud → replaced by 🇦🇺 Christopher O'Connell
 * 🇫🇷 Gilles Simon → replaced by 🇰🇷 Kwon Soon-woo
 * 🇦🇹 Dominic Thiem → replaced by 🇦🇷 Federico Delbonis
 * 🇫🇷 Jo-Wilfried Tsonga → replaced by 🇺🇸 Sebastian Korda
 * Stan Wawrinka → replaced by 🇺🇸 Steve Johnson
 * During the tournament
 * Lloyd Harris

Retirements

 * 🇬🇧 Jack Draper
 * 🇪🇸 Pedro Martínez

Seeds

 * 1 Rankings as of March 15, 2021.

Other entrants
The following pairs received wildcards into the doubles main draw: The following pair received entry as an alternate:
 * 🇺🇸 Steve Johnson / 🇺🇸 Sam Querrey
 * 🇺🇸 Sebastian Korda / 🇺🇸 Michael Mmoh
 * 🇺🇸 Nicholas Monroe / 🇺🇸 Frances Tiafoe
 * 🇧🇷 Marcelo Demoliner / 🇲🇽 Santiago González

Withdrawals

 * Before the tournament
 * 🇦🇺 Alex de Minaur / 🇦🇺 John Millman → replaced by 🇷🇸 Miomir Kecmanović / 🇵🇰 Aisam-ul-Haq Qureshi
 * 🇧🇬 Grigor Dimitrov / 🇯🇵 Kei Nishikori → replaced by 🇧🇷 Marcelo Demoliner / 🇲🇽 Santiago González


 * During the tournament
 * 🇷🇺 Karen Khachanov / 🇷🇺 Andrey Rublev

Seeds
The following are the seeded players. Seedings are based on WTA rankings as of March 15, 2021. Rankings and points before are as of March 22, 2021.

^ Points form 2019 Miami, 2019 Guadalajara, 2019 Charleston and 2019 Monterrey will be dropped on Monday, April 5; 2019 Indian Wells will not be mandatory anymore

¡ Miami will not be considered a mandatory result that must be counted as part of a player's best 16 results

† The player did not qualify for the tournament in 2019. Accordingly, this was her 16th best result deducted instead.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇷🇺 Anna Kalinskaya
 * Ana Konjuh
 * 🇺🇸 Robin Montgomery
 * 🇦🇺 Storm Sanders
 * 🇺🇸 Katrina Scott
 * 🇪🇬 Mayar Sherif
 * 🇨🇳 Wang Xinyu
 * 🇨🇳 Wang Xiyu

The following player received entry using a protected ranking into the singles main draw:
 * 🇬🇧 Katie Boulter
 * 🇩🇪 Andrea Petkovic
 * 🇷🇺 Anastasia Potapova
 * 🇰🇿 Yaroslava Shvedova

The following players received entry from the qualifying draw:
 * 🇺🇸 Hailey Baptiste
 * 🇪🇸 Aliona Bolsova
 * 🇷🇴 Mihaela Buzărnescu
 * 🇮🇹 Elisabetta Cocciaretto
 * 🇷🇸 Olga Danilović
 * 🇫🇷 Océane Dodin
 * 🇸🇰 Kristína Kučová
 * 🇨🇿 Tereza Martincová
 * 🇧🇬 Tsvetana Pironkova
 * 🇷🇺 Liudmila Samsonova
 * 🇷🇸 Nina Stojanović
 * 🇲🇽 Renata Zarazúa

The following player received entry as a lucky loser:
 * 🇧🇪 Kirsten Flipkens

Withdrawals

 * Before the tournament
 * Polona Hercog → replaced by 🇩🇪 Andrea Petkovic
 * Hsieh Su-wei → replaced by 🇷🇺 Anastasia Potapova
 * 🇷🇺 Daria Kasatkina → replaced by 🇰🇿 Zarina Diyas
 * 🇺🇸 Ann Li → replaced by 🇬🇧 Katie Boulter
 * 🇨🇿 Karolína Muchová → replaced by 🇮🇹 Camila Giorgi
 * 🇷🇺 Anastasia Pavlyuchenkova → replaced by 🇺🇸 Lauren Davis
 * 🇺🇸 Alison Riske → replaced by 🇧🇪 Kirsten Flipkens
 * 🇨🇿 Barbora Strýcová → replaced by 🇺🇦 Marta Kostyuk
 * 🇷🇴 Patricia Maria Țig → replaced by 🇺🇸 Madison Brengle
 * 🇧🇪 Alison Van Uytvanck → replaced by 🇯🇵 Nao Hibino
 * Donna Vekić → replaced by Arantxa Rus
 * 🇺🇸 Serena Williams → replaced by 🇺🇸 Christina McHale
 * 🇺🇦 Dayana Yastremska (provisional suspension) → replaced by 🇺🇸 Venus Williams


 * During the tournament
 * 🇷🇴 Simona Halep
 * 🇩🇪 Laura Siegemund
 * 🇷🇸 Nina Stojanović

Retirements

 * 🇨🇦 Bianca Andreescu
 * Jil Teichmann

Seeds

 * 1 Rankings as of March 15, 2021.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇺🇸 Hailey Baptiste / 🇺🇸 Robin Montgomery
 * Kiki Bertens / Arantxa Rus
 * 🇦🇺 Ajla Tomljanović / 🇬🇧 Heather Watson

The following pairs received entry using a protected ranking into the doubles main draw:
 * 🇺🇸 Kaitlyn Christian / 🇷🇺 Alla Kudryavtseva
 * 🇧🇪 Kirsten Flipkens / 🇺🇸 CoCo Vandeweghe
 * 🇺🇸 Vania King / 🇰🇿 Yaroslava Shvedova

The following pairs received entry as an alternate:
 * 🇷🇺 Ekaterina Alexandrova / 🇨🇳 Zhaoxuan Yang
 * 🇫🇷 Caroline Garcia / 🇦🇷 Nadia Podoroska
 * Petra Martić / 🇺🇸 Shelby Rogers
 * 🇺🇸 Asia Muhammad / 🇺🇸 Jessica Pegula

Withdrawals

 * Before the tournament
 * 🇦🇺 Ashleigh Barty / 🇺🇸 Jennifer Brady → replaced by 🇫🇷 Caroline Garcia / 🇦🇷 Nadia Podoroska
 * Belinda Bencic / Jil Teichmann → replaced by  Petra Martić / 🇺🇸 Shelby Rogers
 * 🇷🇺 Anna Kalinskaya / 🇸🇰 Viktória Kužmová → replaced by 🇷🇺 Ekaterina Alexandrova / 🇨🇳 Zhaoxuan Yang
 * 🇩🇪 Laura Siegemund / 🇷🇺 Vera Zvonareva → replaced by 🇺🇸 Asia Muhammad / 🇺🇸 Jessica Pegula
 * During the tournament
 * 🇷🇴 Simona Halep / 🇩🇪 Angelique Kerber
 * Darija Jurak / 🇷🇸 Nina Stojanović