# 2016 AON Open Challenger – Singles

Nicolás Almagro was the defending champion but lost in the final, 7–6$^{(7–5)}$, 6–4, to Jerzy Janowicz.

## Seeds

* Nicolás Almagro (final)
* Horacio Zeballos (second round)
* Carlos Berlocq (semifinals)
* Roberto Carballés Baena (second round)
* Teymuraz Gabashvili (second round)
* Denis Istomin (quarterfinals)
* Adam Pavlásek (semifinals)
* Jozef Kovalík (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 | Semifinals | Final | Final | Final | Final |
| 1/WC | Nicolás Almagro | 6 | 2 | 6 | | | | |
| 7 | Adam Pavlásek | 0 | 6 | 4 | | | | |
| 7 | Adam Pavlásek | 0 | 6 | 4 | 1/WC | Nicolás Almagro | 6$^5$ | 4 |
| | | | | | | Jerzy Janowicz | 7$^7$ | 6 |
| 3 | Carlos Berlocq | 6 | 5 | 6$^4$ | | Jerzy Janowicz | 7$^7$ | 6 |
| | Jerzy Janowicz | 3 | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1/WC | N Almagro | 1 | 6 | 7 | | | | | | | | | | | | | | | |
| WC | G Quinzi | 6 | 4 | 5 | 1/WC | N Almagro | 7$^8$ | 5 | 6 | | | | | | | | | | |
| | L Đere | 6 | 3 | 6 | | L Đere | 6$^6$ | 7 | 4 | | | | | | | | | | |
| | M Zekić | 3 | 6 | 1 | | | | | | 1/WC | N Almagro | 6 | 7$^7$ | | | | | | |
| Q | D Petrović | 7 | 3 | | | | | | | 6/WC | D Istomin | 2 | 6$^1$ | | | | | | |
| | F Volandri | 5 | 0$^r$ | | Q | D Petrović | 6 | 3 | 0$^r$ | | | | | | | | | | |
| | R Ramanathan | 3 | 4 | | 6/WC | D Istomin | 4 | 6 | 3 | | | | | | | | | | |
| 6/WC | D Istomin | 6 | 6 | | | | | | | | | | | | 1/WC | N Almagro | 6 | 2 | 6 |
| 4 | R Carballés Baena | 4 | 6 | 7 | | | | | | | | | | | 7 | A Pavlásek | 0 | 6 | 4 |
| | M Donati | 6 | 2 | 5 | 4 | R Carballés Baena | 4 | 4 | | | | | | | | | | | |
| | E Ymer | 6$^5$ | 6 | 1 | | K de Schepper | 6 | 6 | | | | | | | | | | | |
| | K de Schepper | 7$^7$ | 3 | 6 | | | | | | | K de Schepper | 6 | 4 | 4 | | | | | |
| | S Diez | 4 | 6$^5$ | | | | | | | 7 | A Pavlásek | 2 | 6 | 6 | | | | | |
| | M Cecchinato | 6 | 7$^7$ | | | M Cecchinato | 6 | 4 | 2 | | | | | | | | | | |
| Q | H Hurkacz | 4 | 4 | | 7 | A Pavlásek | 2 | 6 | 6 | | | | | | | | | | |
| 7 | A Pavlásek | 6 | 6 | | | | | | | | | | | | | | | | |

### 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 | J Kovalík | 6 | 6 | | | | | | | | | | | | | | | |
| | A Montañés | 4 | 3 | | 8 | J Kovalík | 7 | 7$^7$ | | | | | | | | | | |
| | A Arnaboldi | 2 | 6 | 6 | | A Arnaboldi | 5 | 6$^1$ | | | | | | | | | | |
| | F Gaio | 6 | 4 | 1 | | | | | 8 | J Kovalík | 3 | 6 | 6$^6$ | | | | | |
| | A Ungur | 6 | 6 | | | | | | 3 | C Berlocq | 6 | 4 | 7$^8$ | | | | | |
| Q | D Marcan | 2 | 4 | | | A Ungur | 5 | 0 | | | | | | | | | | |
| | A Vatutin | 3 | 6 | 0 | 3 | C Berlocq | 7 | 6 | | | | | | | | | | |
| 3 | C Berlocq | 6 | 2 | 6 | | | | | | | | | | 3 | C Berlocq | 6 | 5 | 6$^4$ |
| 5 | T Gabashvili | 7$^7$ | 7$^{13}$ | | | | | | | | | | | | J Janowicz | 3 | 7 | 7$^7$ |
| | T Robredo | 6$^3$ | 6$^{11}$ | | 5 | T Gabashvili | 4 | 3 | | | | | | | | | | |
| WC | Edoardo Eremin | 6 | 4 | 3 | Q | G Mager | 6 | 6 | | | | | | | | | | |
| Q | G Mager | 1 | 6 | 6 | | | | | Q | G Mager | 4 | 3 | | | | | | |
| | J Janowicz | 6 | 6$^5$ | 7 | | | | | | J Janowicz | 6 | 6 | | | | | | |
| Alt | L Sonego | 3 | 7$^7$ | 5 | | J Janowicz | 7 | 6 | | | | | | | | | | |
| | S Napolitano | 3 | 4 | | 2 | H Zeballos | 5 | 4 | | | | | | | | | | |
| 2 | H Zeballos | 6 | 6 | | | | | | | | | | | | | | | |