# 2024 HPP Open – Singles

Corentin Moutet was the defending champion but chose not to defend his title.
Kei Nishikori won the title after defeating Luca Nardi 3–6, 6–4, 6–1 in the final.

## Seeds

* Gabriel Diallo (withdrew)
* Borna Ćorić (withdrew)
* Otto Virtanen (quarterfinals)
* Jacob Fearnley (quarterfinals)
* Luca Nardi (final)
* Mikhail Kukushkin (first round)
* Jérôme Kym (second round)
* Maximilian Marterer (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
* NG = Next Gen Accelerator Program entrant

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| Q | Max Hans Rehberg | 4 | 7$^8$ | 2 | | | | | |
| | Kei Nishikori | 6 | 6$^6$ | 6 | | | | | |
| | Kei Nishikori | 6 | 6$^6$ | 6 | | Kei Nishikori | 3 | 6 | 6 |
| | | | | | 5 | Luca Nardi | 6 | 4 | 1 |
| | Denis Yevseyev | 6 | 3 | 6$^4$ | 5 | Luca Nardi | 6 | 4 | 1 |
| 5 | Luca Nardi | 2 | 6 | 7$^7$ | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| LL | R Berankis | 3 | 4 | | | | | | | | | | | | | | | |
| | H Squire | 6 | 6 | | | H Squire | 7 | 6 | | | | | | | | | | |
| | A Pellegrino | 6 | 6 | | | A Pellegrino | 5 | 4 | | | | | | | | | | |
| Q | Alexis Gautier | 3 | 1 | | | | | | | | H Squire | 6$^5$ | 6$^5$ | | | | | |
| Q | MH Rehberg | 6 | 1 | 6 | | | | | | Q | MH Rehberg | 7$^7$ | 7$^7$ | | | | | |
| Q | G Blancaneaux | 4 | 6 | 3 | Q | MH Rehberg | 7$^7$ | 6 | | | | | | | | | | |
| | S Rodríguez Taverna | 3 | 3 | | 8 | M Marterer | 6$^5$ | 4 | | | | | | | | | | |
| 8 | M Marterer | 6 | 6 | | | | | | | | | | | Q | MH Rehberg | 4 | 7$^8$ | 2 |
| 4 | J Fearnley | 6 | 6 | | | | | | | | | | | | K Nishikori | 6 | 6$^6$ | 6 |
| | V Royer | 2 | 3 | | 4 | J Fearnley | 6 | 6 | | | | | | | | | | |
| | A Kachmazov | 1 | 2 | | | Em Nava | 4 | 3 | | | | | | | | | | |
| | Em Nava | 6 | 6 | | | | | | | 4 | J Fearnley | 4 | 3 | | | | | |
| | K Nishikori | 6 | 6 | | | | | | | | K Nishikori | 6 | 6 | | | | | |
| Q | N Álvarez Varona | 4 | 2 | | | K Nishikori | 6 | 1 | 6 | | | | | | | | | |
| Q | A Shelbayh | 2 | 1 | | 7 | J Kym | 3 | 6 | 2 | | | | | | | | | |
| 7 | J Kym | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | M Kukushkin | 4 | 5 | | | | | | | | | | | | | | | |
| Alt | F Arnaboldi | 6 | 7 | | Alt | F Arnaboldi | 2 | 4 | | | | | | | | | | |
| | D Yevseyev | 6 | 6 | | | D Yevseyev | 6 | 6 | | | | | | | | | | |
| WC | O Ojakäär | 2 | 4 | | | | | | | | D Yevseyev | 6 | 7 | | | | | |
| WC | Patrick Kaukovalta | 6 | 4 | 7$^8$ | | | | | | 3 | O Virtanen | 4 | 5 | | | | | |
| WC | Oskari Paldanius | 3 | 6 | 6$^6$ | WC | P Kaukovalta | 3 | 2 | | | | | | | | | | |
| Alt | R Molleker | 4 | 3 | | 3 | O Virtanen | 6 | 6 | | | | | | | | | | |
| 3 | O Virtanen | 6 | 6 | | | | | | | | | | | | D Yevseyev | 6 | 3 | 6$^4$ |
| 5 | L Nardi | 6 | 0 | | | | | | | | | | | 5 | L Nardi | 2 | 6 | 7$^7$ |
| SE | G Oliveira | 3 | 0$^r$ | | 5 | L Nardi | 7$^8$ | 7$^7$ | | | | | | | | | | |
| | A Holmgren | 6 | 6 | | | A Holmgren | 6$^6$ | 6$^2$ | | | | | | | | | | |
| | E Butvilas | 4 | 1 | | | | | | | 5 | L Nardi | 6 | 6 | | | | | |
| Q | Sandro Kopp | 2 | 1 | | | | | | | | J Choinski | 4 | 3 | | | | | |
| | J Choinski | 6 | 6 | | | J Choinski | 0 | 6 | 6 | | | | | | | | | |
| | J Fonseca | 6 | 6 | | | J Fonseca | 6 | 1 | 2 | | | | | | | | | |
| LL | J Sels | 2 | 3 | | | | | | | | | | | | | | | |