# 2021 Belgrade Challenger

The 2021 Belgrade Challenger was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Belgrade, Serbia between 12 and 18 April 2021.
For the first time, a women's tournament was also held between 26 and 31 July, categorized as a WTA 125 event at the same venue, which was part of 2021 WTA 125K series.

## ATP singles main-draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| ESP | Roberto Carballés Baena | 98 | 1 |
| ARG | Facundo Bagnis | 104 | 2 |
| COL | Daniel Elahi Galán | 110 | 3 |
| GER | Philipp Kohlschreiber | 112 | 4 |
| ARG | Francisco Cerúndolo | 114 | 5 |
| JPN | Taro Daniel | 117 | 6 |
| BOL | Hugo Dellien | 121 | 7 |
| FRA | Benjamin Bonzi | 125 | 8 |
* $^1$ Rankings are as of 5 April 2021.

### Other entrants

The following players received wildcards into the singles main draw:
* Peđa Krstin
* Hamad Međedović
* Marko Miladinović
The following players received entry into the singles main draw as special exempts:
* Gonçalo Oliveira
* Blaž Rola
The following players received entry from the qualifying draw:
* Matthias Bachinger
* Elliot Benchetrit
* Alessandro Giannessi
* Marco Trungelliti

## WTA singles main-draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| RUS | Anna Blinkova | 83 | 1 |
| NED | Arantxa Rus | 85 | 2 |
| RUS | Varvara Gracheva | 89 | 3 |
| GER | Andrea Petkovic | 97 | 4 |
| ITA | Martina Trevisan | 102 | 5 |
| SLO | Kaja Juvan | 107 | 6 |
| ROU | Irina Bara | 116 | 7 |
| BUL | Viktoriya Tomova | 117 | 8 |
* $^1$ Rankings are as of 19 July 2021.

### Other entrants

The following players received wildcards into the singles main draw:
* Tena Lukas
* Lola Radivojević
* Iva Šepa
* Draginja Vuković
The following players received entry from the qualifying draw:
* Jessika Ponchet
* Camilla Rosatello
* Tara Würth
* Ekaterina Yashina

### Withdrawals
#### Before the tournament

* Ana Bogdan → replaced by Tereza Mrdeža
* Elisabetta Cocciaretto → replaced by Lesia Tsurenko
* Zarina Diyas → replaced by Olga Govortsova
* Océane Dodin → replaced by Amandine Hesse
* Sara Errani → replaced by Jaqueline Cristian
* Viktorija Golubic → replaced by Rebecca Šramková
* Polona Hercog → replaced by Jule Niemeier
* Anna Kalinskaya → replaced by Andrea Petkovic
* Jasmine Paolini → replaced by Jana Fett
* Elena-Gabriela Ruse → replaced by Panna Udvardy
* Aliaksandra Sasnovich → replaced by Isabella Shinikova
* Patricia Maria Țig → replaced by Susan Bandecchi
* Stefanie Vögele → replaced by Olga Danilović

## WTA doubles main-draw entrants
### Seeds

| Country | Player | Country | Player | Rank$^1$ | Seed |
| RUS | Natela Dzalamidze | GEO | Oksana Kalashnikova | 251 | 1 |
| BLR | Olga Govortsova | BLR | Lidziya Marozava | 355 | 2 |
| NOR | Ulrikke Eikeri | HUN | Panna Udvardy | 378 | 3 |
| FRA | Estelle Cascino | ITA | Camilla Rosatello | 382 | 4 |
* $^1$ Rankings are as of 19 July 2021.

### Other entrants

The following pair received a wildcard into the doubles main draw:
* Elena Milovanović / Lola Radivojević

## Champions
### Men's singles

* Roberto Carballés Baena def. Damir Džumhur 6–4, 7–5.

### Women's singles

* Anna Karolína Schmiedlová def. Arantxa Rus 6–3, 6–3

### Men's doubles

* Guillermo Durán / Andrés Molteni def. Tomislav Brkić / Nikola Ćaćić 6–4, 6–4.

### Women's doubles

* Olga Govortsova / Lidziya Marozava def. Alena Fomina / Ekaterina Yashina 6–2, 6–2