# 2013 Nottingham Challenge – Men's singles

Grega Žemlja was the defending champion, but chose to compete in the 2013 Birmingham Championship instead. Steve Johnson won the final 7–5, 7–5 against Ruben Bemelmans.

## Seeds

* Alex Bogomolov Jr. (first round, retired)
* Martín Alund (first round)
* Vasek Pospisil (second round)
* Tim Smyczek (first round)
* Jack Sock (second round)
* Illya Marchenko (quarterfinals)
* Matthew Ebden (second round)
* Go Soeda (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 |
| Ruben Bemelmans | 5 | 7$^7$ | 7$^7$ | | | |
| Rik de Voest | 7 | 6$^5$ | 6$^5$ | | | |
| Rik de Voest | 7 | 6$^5$ | 6$^5$ | Ruben Bemelmans | 5 | 5 |
| | | | | Steve Johnson | 7 | 7 |
| Steve Johnson | 6 | 6 | | Steve Johnson | 7 | 7 |
| Somdev Devvarman | 3 | 4 | | | | |

### 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 | A Bogomolov Jr. | 5 | r | | | | | | | | | | | | | | | |
| | U Ignatik | 7 | | | | U Ignatik | 4 | 3 | | | | | | | | | | |
| | K Beck | 6 | 4 | 3 | LL | D Zhyrmont | 6 | 6 | | | | | | | | | | |
| LL | D Zhyrmont | 4 | 6 | 6 | | | | | | LL | D Zhyrmont | 2 | 2 | | | | | |
| | R Bemelmans | 7$^7$ | 6 | | | | | | | | R Bemelmans | 6 | 6 | | | | | |
| WC | D Smethurst | 6$^3$ | 1 | | | R Bemelmans | 7$^7$ | 6 | | | | | | | | | | |
| | M Authom | 1 | 2 | | 7 | M Ebden | 6$^2$ | 3 | | | | | | | | | | |
| 7 | M Ebden | 6 | 6 | | | | | | | | | | | | R Bemelmans | 5 | 7$^7$ | 7$^7$ |
| 4 | T Smyczek | 6$^4$ | 3 | | | | | | | | | | | | R de Voest | 7 | 6$^5$ | 6$^5$ |
| | R de Voest | 7$^7$ | 6 | | | R de Voest | 6 | 6 | | | | | | | | | | |
| | Y Sugita | 6 | 6 | | | Y Sugita | 3 | 2 | | | | | | | | | | |
| WC | J Milton | 3 | 0 | | | | | | | | R de Voest | 3 | 6 | 6 | | | | |
| WC | D Rice | 6 | 3 | 7$^{13}$ | | | | | | 8 | G Soeda | 6 | 1 | 3 | | | | |
| | B Klahn | 4 | 6 | 6$^{11}$ | WC | D Rice | 6 | 1 | 2 | | | | | | | | | |
| Q | A Bossel | 6 | 2 | 3 | 8 | G Soeda | 3 | 6 | 6 | | | | | | | | | |
| 8 | G Soeda | 1 | 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 |
| 6 | I Marchenko | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | |
| | F Serra | 6$^4$ | 6$^4$ | | 6 | I Marchenko | 5 | | | | | | | | | | |
| | M Berrer | 6 | 6 | | | M Berrer | 4$^r$ | | | | | | | | | | |
| Q | George Coupland | 4 | 3 | | | | | | | 6 | I Marchenko | 6$^4$ | 0 | | | | |
| | S Johnson | 6 | 6 | | | | | | | | S Johnson | 7$^7$ | 6 | | | | |
| WC | Richard Gabb | 2 | 3 | | | S Johnson | 6 | 7$^8$ | | | | | | | | | |
| | M Bachinger | 6 | 6$^3$ | 4 | 3 | V Pospisil | 4 | 6$^6$ | | | | | | | | | |
| 3 | V Pospisil | 3 | 7$^7$ | 6 | | | | | | | | | | | S Johnson | 6 | 6 |
| 5 | J Sock | 6 | 6 | | | | | | | | | | | | S Devvarman | 3 | 4 |
| | M Przysiężny | 4 | 2 | | 5 | J Sock | 6 | 6$^5$ | 3 | | | | | | | | |
| Q | B Klein | 6$^2$ | 4 | | | S Devvarman | 1 | 7$^7$ | 6 | | | | | | | | |
| | S Devvarman | 7$^7$ | 6 | | | | | | | | S Devvarman | 3 | 7$^7$ | 6 | | | |
| Q | J Ward-Hibbert | 1 | 6$^5$ | | | | | | | | D Young | 6 | 6$^4$ | 4 | | | |
| | D Young | 6 | 7$^7$ | | | D Young | 6 | 6 | | | | | | | | | |
| | F Cipolla | 6 | 6 | | | F Cipolla | 1 | 4 | | | | | | | | | |
| 2 | M Alund | 3 | 2 | | | | | | | | | | | | | | |