2021 IBG Prague Open
# 2021 IBG Prague Open

The 2021 IBG 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 23 and 29 August 2021.

## Singles main-draw entrants

### Seeds

| Country | Player | $Rank^1$ | Seed |
| - | - | - | - |
| RUS | Evgeny Karlovskiy | 290 | 1 |
| USA | Alexander Ritschard | 300 | 2 |
| RUS | Evgenii Tiurnev | 310 | 3 |
| FRA | Geoffrey Blancaneaux | 311 | 4 |
| CZE | Jonáš Forejtek | 315 | 5 |
| BEL | Michael Geerts | 319 | 6 |
| ROU | Filip Jianu | 320 | 7 |
| SRB | Miljan Zekić | 324 | 8 |

* $^1$ Rankings as of 16 August 2021.

### Other entrants

The following players received wildcards into the singles main draw:

* Martin Krumich
* Andrew Paulson
* Daniel Siniakov

The following player received entry into the singles main draw using a protected ranking:

* Matteo Donati

The following players received entry from the qualifying draw:

* Facundo Díaz Acosta
* Uladzimir Ignatik
* Zsombor Piros
* Alex Rybakov

## Champions

### Singles

* Franco Agamenone def. Ryan Peniston 6–3, 6–1.

### Doubles

* Victor Vlad Cornea / Petros Tsitsipas def. Martin Krumich / Andrew Paulson 6–3, 3–6, [10–8].
