Belgrade 2021 ATP
Final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Matteo Berrettini | m. | Aslan Karatsev | 6-1 3-6 7-6(0) |
Semifinal
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Matteo Berrettini | m. | Taro Daniel | 6-1 6-7(5) 6-0 |
| Aslan Karatsev | m. | Novak Djokovic | 7-5 4-6 6-4 |
Perempat final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Matteo Berrettini | m. | Filip Krajinovic | 6-4 6-4 |
| Taro Daniel | m. | Federico Delbonis | 4-6 6-1 7-5 |
| Aslan Karatsev | m. | Gianluca Mager | 6-3 6-4 |
| Novak Djokovic | m. | Miomir Kecmanovic | 6-1 6-3 |
Babak 16 besar
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Matteo Berrettini | m. | Marco Cecchinato | 6-4 6-3 |
| Filip Krajinovic | m. | Nikola Milojevic | 6-1 6-1 |
| Federico Delbonis | m. | Dusan Lajovic | 6-3 2-6 6-4 |
| Taro Daniel | m. | John Millman | 3-6 6-2 6-3 |
| Gianluca Mager | m. | Alexei Popyrin | 7-5 6-2 |
| Aslan Karatsev | m. | Aljaz Bedene | 6-3 4-6 7-6(5) |
| Miomir Kecmanovic | m. | Arthur Rinderknech | 6-3 3-6 6-3 |
| Novak Djokovic | m. | Soon Woo Kwon | 6-1 6-3 |
Babak 32 besar
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Marco Cecchinato | m. | Viktor Troicki | 6-1 6-4 |
| Nikola Milojevic | m. | Federico Coria | 6-4 6-0 |
| Filip Krajinovic | m. | Stefano Travaglia | 7-5 5-7 6-3 |
| Federico Delbonis | m. | Ricardas Berankis | 6-4 3-6 6-1 |
| Taro Daniel | m. | Joao Sousa | 7-5 6-3 |
| John Millman | m. | Danilo Petrovic | 7-5 6-4 |
| Gianluca Mager | m. | Laslo Djere | 6-4 6-3 |
| Alexei Popyrin | m. | Francisco Cerundolo | 4-6 7-6(5) 7-6(6) |
| Aljaz Bedene | m. | Sebastian Korda | 7-5 1-6 7-6(5) |
| Miomir Kecmanovic | m. | Facundo Bagnis | 7-6(5) 7-6(4) |
| Arthur Rinderknech | m. | Juan Ignacio Londero | 6-1 7-5 |
| Soon Woo Kwon | m. | Roberto Carballes Baena | 6-3 7-5 |
Kualifikasi babak 2
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Arthur Rinderknech | m. | Joao Sousa | 7-5 6-4 |
| Francisco Cerundolo | m. | Roberto Carballes Baena | 7-6(6) 6-4 |
| Facundo Bagnis | m. | Hamad Medjedovic | 6-4 6-2 |
| Gianluca Mager | m. | Taro Daniel | 6-1 4-6 6-4 |
Kualifikasi babak 1
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Arthur Rinderknech | m. | Yuichi Sugita | 6-1 6-2 |
| Joao Sousa | m. | Brandon Nakashima | 6-4 6-2 |
| Francisco Cerundolo | m. | Jozef Kovalik | 7-5 6-4 |
| Roberto Carballes Baena | m. | Damir Dzumhur | 7-6(2) 2-6 0-0 RET |
| Hamad Medjedovic | m. | Daniel Elahi Galan | 7-6(4) 7-6(5) |
| Facundo Bagnis | m. | Evgeny Donskoy | 6-3 6-2 |
| Taro Daniel | m. | Marko Miladinovic | 6-1 6-2 |
| Gianluca Mager | m. | Benjamin Bonzi | 4-6 7-6(1) 6-3 |