# 2024 AON Open Challenger – Singles

Thiago Seyboth Wild was the defending champion but lost in the first round to Andrea Picchione.
Francesco Passaro won the title after defeating Jaume Munar 7–5, 6–3 in the final.

## Seeds

* Thiago Seyboth Wild (first round)
* Thiago Monteiro (quarterfinals)
* Jaume Munar (final)
* Daniel Elahi Galán (second round)
* Stefano Napolitano (first round)
* Francesco Passaro (champion)
* Juan Pablo Varillas (second round)
* Andrea Pellegrino (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 |
| | Stefano Travaglia | 1 | 0$^r$ | | | | | |
| 3 | Jaume Munar | 6 | 3 | | | | | |
| 3 | Jaume Munar | 6 | 3 | | 3 | Jaume Munar | 5 | 3 |
| | | | | | 6 | Francesco Passaro | 7 | 6 |
| | Ignacio Buse | 6 | 3 | 4 | 6 | Francesco Passaro | 7 | 6 |
| 6 | Francesco Passaro | 2 | 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 | T Seyboth Wild | 4 | 5 | | | | | | | | | | | | | | | |
| Q | Andrea Picchione | 6 | 7 | | Q | A Picchione | 4 | 4 | | | | | | | | | | |
| | S Travaglia | 6 | 6 | | | S Travaglia | 6 | 6 | | | | | | | | | | |
| | Samuel Vincent Ruggeri | 3 | 2 | | | | | | | | S Travaglia | 6$^6$ | 6 | 6 | | | | |
| | G Mager | 5 | 6$^4$ | | | | | | | Q | M Poljičak | 7$^8$ | 2 | 2 | | | | |
| Alt | M Kližan | 7 | 7$^7$ | | Alt | M Kližan | 6 | 2 | 1 | | | | | | | | | |
| Q | M Poljičak | 7 | 6 | | Q | M Poljičak | 4 | 6 | 6 | | | | | | | | | |
| 8 | A Pellegrino | 5 | 2 | | | | | | | | | | | | | S Travaglia | 1 | 0$^r$ |
| 3 | J Munar | 1 | 4 | | | | | | | | | | | | 3 | J Munar | 6 | 3 |
| Q | M Echargui | 6 | 4$^r$ | | 3 | J Munar | 7 | 6 | | | | | | | | | | |
| WC | Federico Bondioli | 2 | 6 | 4 | Q | K Feldbausch | 5 | 4 | | | | | | | | | | |
| Q | K Feldbausch | 6 | 4 | 6 | | | | | | 3 | J Munar | 2 | 7 | 6 | | | | |
| | K Nishikori | 6 | 6 | | | | | | | | K Nishikori | 6 | 5 | 3 | | | | |
| Q | Matthew Dellavedova | 4 | 4 | | | K Nishikori | 6 | 6 | | | | | | | | | | |
| WC | Gianluca Cadenasso | 6 | 5 | 1 | 7 | JP Varillas | 2 | 3 | | | | | | | | | | |
| 7 | JP Varillas | 4 | 7 | 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 | S Napolitano | 4 | 6$^4$ | | | | | | | | | | | | | | | | |
| | G Fonio | 6 | 7$^7$ | | | G Fonio | 7$^9$ | 1 | | | | | | | | | | | |
| | A Andreev | 7 | 3 | 6 | | A Andreev | 6$^7$ | 0$^r$ | | | | | | | | | | | |
| Q | GA Olivieri | 5 | 6 | 2 | | | | | | | G Fonio | 4 | 2 | | | | | | |
| WC | J Berrettini | 4 | 2 | | | | | | | | I Buse | 6 | 6 | | | | | | |
| | I Buse | 6 | 6 | | | I Buse | 7$^7$ | 7$^7$ | | | | | | | | | | | |
| | D Popko | 5 | 7 | 3 | 4 | DE Galán | 6$^3$ | 6$^1$ | | | | | | | | | | | |
| 4 | DE Galán | 7 | 5 | 6 | | | | | | | | | | | | I Buse | 6 | 3 | 4 |
| 6 | F Passaro | 6$^5$ | 7$^{12}$ | 6 | | | | | | | | | | | 6 | F Passaro | 2 | 6 | 6 |
| | F Arnaboldi | 7$^7$ | 6$^{10}$ | 2 | 6 | F Passaro | 6 | 6 | | | | | | | | | | | |
| | G Bueno | 7 | 7$^8$ | | | G Bueno | 3 | 2 | | | | | | | | | | | |
| Alt | Alexander Weis | 5 | 6$^6$ | | | | | | | 6 | F Passaro | 4 | 6 | 7$^7$ | | | | | |
| | B Hassan | 4 | 6 | 6 | | | | | | 2 | T Monteiro | 6 | 3 | 6$^5$ | | | | | |
| | F Maestrelli | 6 | 2 | 3 | | B Hassan | 6 | 2 | 6$^2$ | | | | | | | | | | |
| | G Debru | 5 | 3 | | 2 | T Monteiro | 4 | 6 | 7$^7$ | | | | | | | | | | |
| 2 | T Monteiro | 7 | 6 | | | | | | | | | | | | | | | | |