2021 TK Sparta Prague Open

The 2021 TK Sparta Prague Open was a professional tennis tournament played on clay courts. It was part of the 2021 ATP Challenger Tour. It took place in Prague, Czech Republic between 9 and 15 August 2021.

Seeds

 * 1 Rankings as of 2 August 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Toby Kodat
 * 🇨🇿 Martin Krumich
 * 🇨🇿 Dalibor Svrčina

The following player received entry into the singles main draw using a protected ranking:
 * 🇦🇹 Gerald Melzer

The following players received entry from the qualifying draw:
 * 🇮🇹 Franco Agamenone
 * 🇧🇬 Adrian Andreev
 * 🇫🇷 Geoffrey Blancaneaux
 * 🇺🇸 Emilio Nava

Singles

 * 🇨🇿 Dalibor Svrčina def. 🇰🇿 Dmitry Popko 6–0, 7–5.

Doubles

 * 🇨🇿 Jonáš Forejtek / 🇨🇿 Michael Vrbenský def. 🇷🇺 Evgeny Karlovskiy / 🇷🇺 Evgenii Tiurnev 6–1, 6–4.