# 2021 Moselle Open – Singles

Jo-Wilfried Tsonga was the reigning champion from when the tournament was last held in 2019, but chose not to participate this year.
Hubert Hurkacz won the title, defeating Pablo Carreño Busta in the final, 7–6$^{(7–2)}$, 6–3.

## Seeds

The top four seeds received a bye into the second round.
* Hubert Hurkacz (champion)
* Pablo Carreño Busta (final)
* Gaël Monfils (semifinals)
* Alex de Minaur (second round)
* Lorenzo Sonego (second round)
* Ugo Humbert (first round)
* Karen Khachanov (second round)
* Nikoloz Basilashvili (quarterfinals)

## 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 | Final | Final | Final | Final |
| 1 | Hubert Hurkacz | 6 | 7$^7$ | | | | |
| Q | Peter Gojowczyk | 4 | 6$^4$ | | | | |
| Q | Peter Gojowczyk | 4 | 6$^4$ | 1 | Hubert Hurkacz | 7$^7$ | 6 |
| | | | | 2 | Pablo Carreño Busta | 6$^2$ | 3 |
| 3 | Gaël Monfils | 5 | 6$^8$ | 2 | Pablo Carreño Busta | 6$^2$ | 3 |
| 2 | Pablo Carreño Busta | 7 | 7$^{10}$ | | | | |

### Top 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 |
| | | | | | 1 | H Hurkacz | 6 | 6 | | | | | | | | | |
| WC | L Pouille | 3 | 6 | 6 | WC | L Pouille | 2 | 3 | | | | | | | | | |
| Q | B Schnur | 6 | 4 | 4 | | | | | 1 | H Hurkacz | 7$^7$ | 6 | | | | | |
| WC | G Barrère | 3 | 4 | | | | | | WC | A Murray | 6$^4$ | 3 | | | | | |
| | V Pospisil | 6 | 6 | | | V Pospisil | 3 | 3 | | | | | | | | | |
| WC | A Murray | 4 | 6 | 6 | WC | A Murray | 6 | 6 | | | | | | | | | |
| 6 | U Humbert | 6 | 3 | 2 | | | | | | | | | | 1 | H Hurkacz | 6 | 7$^7$ |
| | | | | | | | | | | | | | | Q | P Gojowczyk | 4 | 6$^4$ |
| | | | | | 4 | A de Minaur | 5 | 6$^5$ | | | | | | | | | |
| | A Rinderknech | 6 | 6$^3$ | 4 | | M Giron | 7 | 7$^7$ | | | | | | | | | |
| | M Giron | 3 | 7$^7$ | 6 | | | | | | M Giron | 6 | 1 | 3 | | | | |
| LL | A Hoang | 2 | 6 | 4 | | | | | Q | P Gojowczyk | 3 | 6 | 6 | | | | |
| Q | P Gojowczyk | 6 | 3 | 6 | Q | P Gojowczyk | 6 | 7$^7$ | | | | | | | | | |
| Q | A Müller | 6 | 1 | 3 | 7 | K Khachanov | 3 | 6$^2$ | | | | | | | | | |
| 7 | K Khachanov | 4 | 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 |
| 8 | N Basilashvili | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | G Mager | 3 | 6$^5$ | | 8 | N Basilashvili | 0 | 6 | 7$^7$ | | | | | | | | | |
| | A Davidovich Fokina | 6$^4$ | 7$^7$ | 6 | | A Davidovich Fokina | 6 | 4 | 6$^4$ | | | | | | | | | |
| PR | G Simon | 7$^7$ | 6$^2$ | 2 | | | | | | 8 | N Basilashvili | 3 | 3 | | | | | |
| LL | P Kohlschreiber | 7$^7$ | 6 | | | | | | | 3 | G Monfils | 6 | 6 | | | | | |
| | M Cecchinato | 6$^3$ | 3 | | LL | P Kohlschreiber | 6$^2$ | 4 | | | | | | | | | | |
| | | | | | 3 | G Monfils | 7$^7$ | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 3 | G Monfils | 5 | 6$^8$ |
| 5 | L Sonego | 6 | 6 | | | | | | | | | | | | 2 | P Carreño Busta | 7 | 7$^{10}$ |
| | M Fucsovics | 3 | 2 | | 5 | L Sonego | 7$^8$ | 4 | 4 | | | | | | | | | |
| Q | H Rune | 6 | 6 | | Q | H Rune | 6$^6$ | 6 | 6 | | | | | | | | | |
| LL | B Zapata Miralles | 0 | 0 | | | | | | | Q | H Rune | 4 | 6 | 4 | | | | |
| Alt | M Ymer | 7 | 6 | | | | | | | 2 | P Carreño Busta | 6 | 3 | 6 | | | | |
| | J-L Struff | 5 | 3 | | Alt | M Ymer | 5 | 2 | | | | | | | | | | |
| | | | | | 2 | P Carreño Busta | 7 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Mikael Ymer (moved to the main draw)
* Peter Gojowczyk (qualified)
* Philipp Kohlschreiber (qualifying competition, lucky loser)
* Bernabé Zapata Miralles (qualifying competition, lucky loser)
* Holger Rune (qualified)
* Antoine Hoang (qualifying competition, lucky loser)
* Federico Gaio (first round)
* Quentin Halys (first round)

### Qualifiers

* Brayden Schnur
* Peter Gojowczyk
* Holger Rune
* Alexandre Müller

### Lucky losers

* Philipp Kohlschreiber
* Bernabé Zapata Miralles
* Antoine Hoang

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| Alt | Brayden Schnur | 3 | 6 | 6 | | | | |
| | Roberto Marcora | 6 | 4 | 2 | | | | |
| | Roberto Marcora | 6 | 4 | 2 | Alt | Brayden Schnur | 6 | 6 |
| | | | | | WC | Harold Mayot | 4 | 1 |
| WC | Harold Mayot | 6$^4$ | 7 | 6 | WC | Harold Mayot | 4 | 1 |
| 7 | Federico Gaio | 7$^7$ | 5 | 4 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Peter Gojowczyk | 6 | 6 | | | | | |
| WC | Luca Van Assche | 2 | 3 | | | | | |
| WC | Luca Van Assche | 2 | 3 | 2 | Peter Gojowczyk | 6 | 4 | 6 |
| | | | | 6 | Antoine Hoang | 4 | 6 | 2 |
| PR | Yannick Maden | 2 | 4 | 6 | Antoine Hoang | 4 | 6 | 2 |
| 6 | Antoine Hoang | 6 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Philipp Kohlschreiber | 7 | 6 | | | | | | |
| | Denis Istomin | 5 | 3 | | | | | | |
| | Denis Istomin | 5 | 3 | | 3 | Philipp Kohlschreiber | 7 | 3 | 5 |
| | | | | | 5 | Holger Rune | 5 | 6 | 7 |
| | Thomas Fabbiano | 6 | 3 | 4 | 5 | Holger Rune | 5 | 6 | 7 |
| 5 | Holger Rune | 3 | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Bernabé Zapata Miralles | 3 | 6 | 6 | | | | | |
| | Alejandro Tabilo | 6 | 4 | 1 | | | | | |
| | Alejandro Tabilo | 6 | 4 | 1 | 4 | Bernabé Zapata Miralles | 6$^1$ | 6 | 0 |
| | | | | | | Alexandre Müller | 7$^7$ | 4 | 6 |
| | Alexandre Müller | 3 | 6 | 6 | | Alexandre Müller | 7$^7$ | 4 | 6 |
| 8 | Quentin Halys | 6 | 3 | 4 | | | | | |