# 2021 Antalya Challenger – Singles

This was the first edition of the tournament and first of two editions of the tournament to start the 2021 ATP Challenger Tour year.
Jaume Munar won the title after defeating Lorenzo Musetti 6–7$^{(7–9)}$, 6–2, 6–2 in the final.

## Seeds

* Jaume Munar (champion)
* Daniel Elahi Galán (first round)
* Thiago Seyboth Wild (first round)
* Facundo Bagnis (first round)
* Lorenzo Musetti (final)
* Daniel Altmaier (first round)
* Jozef Kovalík (first round)
* Leonardo Mayer (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Jaume Munar | 6 | 6 | | | | | | |
| | Tommy Robredo | 0 | 1 | | | | | | |
| | Tommy Robredo | 0 | 1 | | 1 | Jaume Munar | 6$^7$ | 6 | 6 |
| | | | | | 5 | Lorenzo Musetti | 7$^9$ | 2 | 2 |
| WC | Cem İlkel | 7$^8$ | 1 | 1 | 5 | Lorenzo Musetti | 7$^9$ | 2 | 2 |
| 5 | Lorenzo Musetti | 6$^6$ | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Munar | 6 | 6 | | | | | | | | | | | | | | | |
| | C Taberner | 3 | 4 | | 1 | J Munar | 6 | 6 | | | | | | | | | | |
| | Z Kolář | 6 | 3 | 7 | | Z Kolář | 2 | 4 | | | | | | | | | | |
| | L Giustino | 3 | 6 | 5 | | | | | | 1 | J Munar | 3 | 6 | 6 | | | | |
| | JP Varillas | 4 | 3 | | | | | | | | A Giannessi | 6 | 2 | 0 | | | | |
| Q | R Cid Subervi | 6 | 6 | | Q | R Cid Subervi | 3 | 2 | | | | | | | | | | |
| | A Giannessi | 6 | 7 | | | A Giannessi | 6 | 6 | | | | | | | | | | |
| 7 | J Kovalík | 4 | 5 | | | | | | | | | | | | 1 | J Munar | 6 | 6 |
| 4 | F Bagnis | 3 | 6$^4$ | | | | | | | | | | | | | T Robredo | 0 | 1 |
| Q | B Kavčič | 6 | 7$^7$ | | Q | B Kavčič | 6 | 3 | 1 | | | | | | | | | |
| | R Molleker | 3 | 4 | | | T Robredo | 4 | 6 | 6 | | | | | | | | | |
| | T Robredo | 6 | 6 | | | | | | | | T Robredo | 6 | 6 | | | | | |
| Q | D Ajduković | 6 | 6 | | | | | | | Q | D Ajduković | 1 | 4 | | | | | |
| WC | M İlhan | 3 | 3 | | Q | D Ajduković | 3 | 6 | 7$^9$ | | | | | | | | | |
| | P Lorenzi | 6 | 6 | | | P Lorenzi | 6 | 4 | 6$^7$ | | | | | | | | | |
| 6 | D Altmaier | 4 | 2 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | L Mayer | 6 | 6 | | | | | | | | | | | | | | | |
| | T Griekspoor | 2 | 2 | | 8 | L Mayer | 5 | 1 | | | | | | | | | | |
| | J Menezes | 3 | 4 | | WC | C İlkel | 7 | 6 | | | | | | | | | | |
| WC | C İlkel | 6 | 6 | | | | | | WC | C İlkel | 6$^5$ | 6 | 7$^7$ | | | | | |
| | M Safwat | 6 | 5 | 6$^7$ | | | | | LL | TM Etcheverry | 7$^7$ | 4 | 6$^4$ | | | | | |
| | J Domingues | 4 | 7 | 7$^9$ | | J Domingues | 1 | 2 | | | | | | | | | | |
| LL | TM Etcheverry | 7$^7$ | 6 | | LL | TM Etcheverry | 6 | 6 | | | | | | | | | | |
| 3 | T Seyboth Wild | 6$^5$ | 4 | | | | | | | | | | | WC | C İlkel | 7$^8$ | 1 | 1 |
| 5 | L Musetti | 6 | 6 | | | | | | | | | | | 5 | L Musetti | 6$^6$ | 6 | 6 |
| | A Tabilo | 2 | 0 | | 5 | L Musetti | 6 | 6 | | | | | | | | | | |
| | E Escobedo | 6$^6$ | 3 | | | R Ramanathan | 0 | 4 | | | | | | | | | | |
| | R Ramanathan | 7$^8$ | 6 | | | | | | 5 | L Musetti | 5 | 6 | 6 | | | | | |
| | E Gómez | 6 | 6 | | | | | | Q | A Santillan | 7 | 3 | 4 | | | | | |
| WC | E Kırkın | 4 | 1 | | | E Gómez | 0 | 1 | | | | | | | | | | |
| Q | A Santillan | 6 | 2 | 7 | Q | A Santillan | 6 | 6 | | | | | | | | | | |
| 2 | DE Galán | 2 | 6 | 5 | | | | | | | | | | | | | | |