# 2021 Bahrain Ministry of Interior Tennis Challenger – Singles

This was the first edition of the tournament.
Ramkumar Ramanathan won the title after defeating Evgeny Karlovskiy 6–1, 6–4 in the final.

## Seeds

* Radu Albot (withdrew)
* Cem İlkel (second round)
* Altuğ Çelikbilek (first round)
* Christopher O'Connell (first round)
* Prajnesh Gunneswaran (first round)
* Ramkumar Ramanathan (champion)
* Jay Clarke (semifinals)
* Mirza Bašić (first 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 |
| 6 | Ramkumar Ramanathan | 5 | 6 | 6 | | | | |
| 7 | Jay Clarke | 7 | 3 | 2 | | | | |
| 7 | Jay Clarke | 7 | 3 | 2 | 6 | Ramkumar Ramanathan | 6 | 6 |
| | | | | | | Evgeny Karlovskiy | 1 | 4 |
| WC | Yankı Erel | 6 | 6$^6$ | 3 | | Evgeny Karlovskiy | 1 | 4 |
| | Evgeny Karlovskiy | 3 | 7$^8$ | 6 | | | | |

### Top half

| 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 | Semifinals |
| Q | M Gengel | 4 | 4 | | | | | | | | | | | | | | | |
| | G Oliveira | 6 | 6 | | G Oliveira | 7$^7$ | 3 | 6 | | | | | | | | | | |
| | A Escoffier | 6 | 6 | | A Escoffier | 6$^5$ | 6 | 4 | | | | | | | | | | |
| Q | M Neuchrist | 3 | 4 | | | | | | | G Oliveira | 3 | 6 | 5 | | | | | |
| | D Ajduković | 6 | 6 | | | | | | 6 | R Ramanathan | 6 | 4 | 7 | | | | | |
| Alt | M Sasikumar | 4 | 4 | | D Ajduković | 2 | 4 | | | | | | | | | | | |
| Q | V Orlov | 2 | 4 | 6 | R Ramanathan | 6 | 6 | | | | | | | | | | | |
| 6 | R Ramanathan | 6 | 6 | | | | | | | | | | | 6 | R Ramanathan | 5 | 6 | 6 |
| 3 | A Çelikbilek | 2 | 3 | | | | | | | | | | | 7 | J Clarke | 7 | 3 | 2 |
| Q | A Lazarov | 6 | 6 | Q | A Lazarov | 6 | 7$^7$ | | | | | | | | | | | |
| | N Fatić | 6 | 6 | | N Fatić | 3 | 6$^3$ | | | | | | | | | | | |
| | L Miedler | 3 | 3 | | | | | | Q | A Lazarov | 2 | 0$^r$ | | | | | | |
| | M Viola | 6 | 7 | | | | | | 7 | J Clarke | 6 | 1 | | | | | | |
| | Y-h Hsu | 4 | 5 | | M Viola | 2 | 1 | | | | | | | | | | | |
| WC | H Abdulnabi | 0 | 0 | 7 | J Clarke | 6 | 6 | | | | | | | | | | | |
| 7 | J Clarke | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom 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 | Semifinals |
| 5 | P Gunneswaran | 3 | 3 | | | | | | | | | | | | | | | | |
| WC | Y Erel | 6 | 6 | | WC | Y Erel | 6 | 5 | 6 | | | | | | | | | | |
| | H Moriya | 6 | 6 | | | H Moriya | 3 | 7 | 2 | | | | | | | | | | |
| | O Virtanen | 3 | 2 | | | | | | | WC | Y Erel | 2 | 6 | 7 | | | | | |
| | G Blancaneaux | 6 | 6 | | | | | | | | R Peniston | 6 | 3 | 5 | | | | | |
| WC | Iván Marrero Curbelo | 3 | 2 | | | G Blancaneaux | 3 | 4 | | | | | | | | | | | |
| | R Peniston | 6$^5$ | 6 | 7$^7$ | | R Peniston | 6 | 6 | | | | | | | | | | | |
| 4 | C O'Connell | 7$^7$ | 3 | 6$^4$ | | | | | | | | | | | WC | Y Erel | 6 | 6$^6$ | 3 |
| 8 | M Bašić | 2 | 3 | | | | | | | | | | | | | E Karlovskiy | 3 | 7$^8$ | 6 |
| | E Karlovskiy | 6 | 6 | | | E Karlovskiy | 6 | 6 | | | | | | | | | | | |
| LL | J Härteis | 6 | 6 | | LL | J Härteis | 3 | 1 | | | | | | | | | | | |
| | A Erler | 3 | 4 | | | | | | | | E Karlovskiy | 7$^7$ | 6 | | | | | | |
| | N Borges | 6 | 7$^8$ | | | | | | | | N Borges | 6$^5$ | 3 | | | | | | |
| | FC Jianu | 3 | 6$^6$ | | | N Borges | 6 | 6 | | | | | | | | | | | |
| | E Kırkın | 4 | 2 | | 2 | C İlkel | 3 | 1 | | | | | | | | | | | |
| 2 | C İlkel | 6 | 6 | | | | | | | | | | | | | | | | |