2021 Delray Beach Open

The 2021 Delray Beach Open (officially known as 2021 Delray Beach Open by VITACOST.com for sponsorship reasons ) was a professional men's tennis tournament played on hard courts. It was the 29th edition of the tournament, and part of the 2021 ATP Tour. It took place in Delray Beach, Florida, United States between January 7 and January 13, 2021. Due to the COVID-19 pandemic, it was rescheduled from its original dates in mid February. Fourth-seeded Hubert Hurkacz won the singles title.

Prize money

 * per team

Seeds

 * 1 Rankings as of January 4, 2021.

Other entrants
The following players received wildcards into the main draw:
 * 🇺🇸 JC Aragone
 * 🇺🇸 Ryan Harrison
 * 🇺🇸 Noah Rubin

The following players received entry from the qualifying draw:
 * 🇺🇸 Christian Harrison
 * 🇺🇸 Kevin King
 * 🇪🇨 Roberto Quiroz
 * 🇺🇸 Donald Young

Withdrawals

 * Before the tournament
 * 🇦🇷 Federico Delbonis → replaced by 🇺🇸 Sebastian Korda
 * 🇬🇧 Dan Evans → replaced by 🇨🇴 Daniel Elahi Galán
 * 🇩🇪 Dominik Koepfer → replaced by 🇺🇸 Mackenzie McDonald
 * 🇯🇵 Kei Nishikori → replaced by 🇺🇸 Bjorn Fratangelo
 * 🇺🇸 Reilly Opelka → replaced by 🇧🇷 Thomaz Bellucci
 * 🇨🇦 Vasek Pospisil → replaced by 🇰🇷 Nam Ji-sung
 * 🇨🇦 Milos Raonic → replaced by 🇦🇷 Tomás Martín Etcheverry
 * 🇸🇪 Mikael Ymer → replaced by Ivo Karlović

Seeds

 * 1 Rankings are as of January 4, 2021.

Other entrants
The following pairs received wildcards into the main draw:
 * 🇺🇸 Bjorn Fratangelo / 🇺🇸 Dennis Novikov
 * 🇺🇸 Ryan Harrison / 🇺🇸 Christian Harrison

The following pair received entry into the main draw using a protected ranking:
 * 🇺🇸 Mackenzie McDonald / 🇺🇸 Tommy Paul

The following pair received entry into the main draw as alternates:
 * 🇺🇸 Hunter Johnson / 🇺🇸 Yates Johnson

Withdrawals

 * Before the tournament
 * Treat Huey / 🇨🇦 Milos Raonic → replaced by 🇺🇸 Nathaniel Lammons / 🇺🇸 Jackson Withrow
 * 🇵🇱 Hubert Hurkacz / 🇺🇸 John Isner → replaced by 🇺🇸 Hunter Johnson / 🇺🇸 Yates Johnson
 * 🇬🇧 Ken Skupski / 🇬🇧 Neal Skupski → replaced by 🇦🇹 Oliver Marach / 🇻🇪 Luis David Martínez

Singles

 * 🇵🇱 Hubert Hurkacz defeated 🇺🇸 Sebastian Korda, 6–3, 6–3

Doubles

 * Ariel Behar / 🇪🇨 Gonzalo Escobar defeated 🇺🇸 Christian Harrison / 🇺🇸 Ryan Harrison, 6–7(5–7), 7–6(7–4), [10–4]