# 2015 City of Onkaparinga ATP Challenger – Singles

This was the first edition of the event.
Ryan Harrison won the title, defeating Marcos Baghdatis 7–6$^{(10–8)}$, 6–4 in the final.

## Seeds

* Blaž Rola (second round)
* Marcos Baghdatis (final)
* Andrey Kuznetsov (quarterfinals)
* Paul-Henri Mathieu (quarterfinals)
* Aleksandr Nedovyesov (quarterfinals)
* Hiroki Moriya (first round)
* Michael Russell (withdrew because of laryngitis)
* Márton Fucsovics (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Ryan Harrison | 6 | 6 | | | | |
| WC | Alex Bolt | 3 | 3 | | | | |
| WC | Alex Bolt | 3 | 3 | | Ryan Harrison | 7$^{10}$ | 6 |
| | | | | 2 | Marcos Baghdatis | 6$^8$ | 4 |
| Q | Andrew Harris | 4 | 4 | 2 | Marcos Baghdatis | 6$^8$ | 4 |
| 2 | Marcos Baghdatis | 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 | B Rola | 4 | 6 | 6 | | | | | | | | | | | | | | |
| WC | O Jasika | 6 | 4 | 1 | 1 | B Rola | 6 | 1 | 5 | | | | | | | | | |
| | R Harrison | 6$^5$ | 6 | 6 | | R Harrison | 1 | 6 | 7 | | | | | | | | | |
| | H Chung | 7$^7$ | 1 | 1 | | | | | | | R Harrison | 5 | 7 | 7 | | | | |
| | L Broady | 6 | 6 | | | | | | | Q | M Authom | 7 | 5 | 5 | | | | |
| Q | Jacob Grills | 4 | 4 | | | L Broady | 2 | 4 | | | | | | | | | | |
| Q | M Authom | 6 | 6 | | Q | M Authom | 6 | 6 | | | | | | | | | | |
| LL | A Šetkić | 4 | 4 | | | | | | | | | | | | | R Harrison | 6 | 6 |
| 4 | P-H Mathieu | 7$^7$ | 6 | | | | | | | | | | | | WC | A Bolt | 3 | 3 |
| | A Ghem | 6$^3$ | 2 | | 4 | P-H Mathieu | 6 | 6 | | | | | | | | | | |
| | P Petzschner | 7 | 1 | 6$^5$ | | M Viola | 1 | 3 | | | | | | | | | | |
| | M Viola | 5 | 6 | 7$^7$ | | | | | | 4 | P-H Mathieu | 5 | 5 | | | | | |
| | G Andreozzi | 3 | 2 | | | | | | | WC | A Bolt | 7 | 7 | | | | | |
| WC | A Bolt | 6 | 6 | | WC | A Bolt | 3 | 7$^7$ | 6 | | | | | | | | | |
| | D Molchanov | 6$^2$ | 4 | | 8 | M Fucsovics | 6 | 6$^5$ | 1 | | | | | | | | | |
| 8 | M Fucsovics | 7$^7$ | 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 |
| 6 | H Moriya | 5 | 1 | | | | | | | | | | | | | | | |
| Q | A Harris | 7 | 6 | | Q | A Harris | 7 | 6 | | | | | | | | | | |
| | G Melzer | 6$^7$ | 7$^7$ | 4 | | J Zopp | 5 | 3 | | | | | | | | | | |
| | J Zopp | 7$^9$ | 6$^5$ | 6 | | | | | | Q | A Harris | 6 | 5 | 6 | | | | |
| | Y Nishioka | 7$^7$ | 6$^3$ | 3 | | | | | | 3 | A Kuznetsov | 2 | 7 | 1 | | | | |
| | W Odesnik | 6$^4$ | 7$^7$ | 6 | | W Odesnik | 1 | 4 | | | | | | | | | | |
| WC | J Thompson | 2 | 4 | | 3 | A Kuznetsov | 6 | 6 | | | | | | | | | | |
| 3 | A Kuznetsov | 6 | 6 | | | | | | | | | | | | Q | A Harris | 4 | 4 |
| 5 | A Nedovyesov | 6 | 7 | | | | | | | | | | | | 2 | M Baghdatis | 6 | 6 |
| | R Albot | 4 | 5 | | 5 | A Nedovyesov | 6 | 4 | 7$^8$ | | | | | | | | | |
| | T Pütz | 6 | 6 | | | T Pütz | 2 | 6 | 6$^6$ | | | | | | | | | |
| | L Saville | 4 | 4 | | | | | | | 5 | A Nedovyesov | 6 | 2 | 2 | | | | |
| | Z Zhang | 3 | 4 | | | | | | | 2 | M Baghdatis | 3 | 6 | 6 | | | | |
| Q | A Whittington | 6 | 6 | | Q | A Whittington | 5 | 3 | | | | | | | | | | |
| WC | J-P Smith | 4 | 3 | | 2 | M Baghdatis | 7 | 6 | | | | | | | | | | |
| 2 | M Baghdatis | 6 | 6 | | | | | | | | | | | | | | | |