# 2015 Amex-Istanbul Challenger – Singles

Adrian Mannarino was the defending champion, but chose not to defend his title.

## Seeds

* Sergiy Stakhovsky (final)
* Marsel İlhan (first round)
* Radu Albot (second round)
* Andrey Kuznetsov (semifinals)
* Aleksandr Nedovyesov (first round)
* Adrián Menéndez-Maceiras (second round)
* Elias Ymer (quarterfinals)
* Mirza Bašić (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 | Final | Final |
| 1/WC | Sergiy Stakhovsky | 6 | 6 | | | | | |
| 4 | Andrey Kuznetsov | 2 | 3 | | | | | |
| 4 | Andrey Kuznetsov | 2 | 3 | 1/WC | Sergiy Stakhovsky | 6 | 4 | 3 |
| | | | | | Karen Khachanov | 4 | 6 | 6 |
| | Yannick Mertens | 1 | 4 | | Karen Khachanov | 4 | 6 | 6 |
| | Karen Khachanov | 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/WC | S Stakhovsky | 3 | 6 | 6 | | | | | | | | | | | | | | |
| Q | I Ivashka | 6 | 1 | 4 | 1/WC | S Stakhovsky | 2 | 7 | 7 | | | | | | | | | |
| | Hiroyasu Ehara | 2 | 2 | | | N Langer | 6 | 5 | 5 | | | | | | | | | |
| | N Langer | 6 | 6 | | | | | | | 1/WC | S Stakhovsky | 6 | 6 | | | | | |
| | M Copil | 7$^7$ | 6 | | | | | | | | M Copil | 4 | 0 | | | | | |
| | A Metreveli | 6$^3$ | 3 | | | M Copil | 4 | 6 | 6 | | | | | | | | | |
| WC | B Ergüden | 2 | 2 | | 6 | A Menéndez-Maceiras | 6 | 4 | 4 | | | | | | | | | |
| 6 | A Menéndez-Maceiras | 6 | 6 | | | | | | | | | | | | 1/WC | S Stakhovsky | 6 | 6 |
| 4 | A Kuznetsov | 6 | 6 | | | | | | | | | | | | 4 | A Kuznetsov | 2 | 3 |
| LL | M Eriksson | 2 | 3 | | 4 | A Kuznetsov | 1 | 6 | 6 | | | | | | | | | |
| | D Zhyrmont | 6 | 6 | | | D Zhyrmont | 6 | 4 | 3 | | | | | | | | | |
| WC | Barkin Yalcinkale | 2 | 2 | | | | | | | 4 | A Kuznetsov | 6$^2$ | 6 | 7 | | | | |
| Q | A Vasilevski | 7$^7$ | 7 | | | | | | | 8 | M Bašić | 7$^7$ | 3 | 5 | | | | |
| Q | M Ledovskikh | 6$^1$ | 5 | | Q | A Vasilevski | 6$^5$ | 3 | | | | | | | | | | |
| | Erik Crepaldi | 4 | 4 | | 8 | M Bašić | 7$^7$ | 6 | | | | | | | | | | |
| 8 | M Bašić | 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 | Semifinals | Semifinals | Semifinals |
| 7 | E Ymer | 6 | 6 | | | | | | | | | | | | |
| WC | A Yüksel | 3 | 1 | | 7 | E Ymer | 7$^7$ | 6 | | | | | | | |
| | Ivan Bjelica | 6 | 6 | | | I Bjelica | 6$^2$ | 3 | | | | | | | |
| | I Gakhov | 3 | 0 | | | | | | 7 | E Ymer | 4 | 5 | | | |
| | A Zaitcev | 2 | 2 | | | | | | | Y Mertens | 6 | 7 | | | |
| | Y Mertens | 6 | 6 | | | Y Mertens | 6 | 7$^7$ | | | | | | | |
| | M Bortolotti | 3 | 3 | | 3 | R Albot | 0 | 6$^3$ | | | | | | | |
| 3 | R Albot | 6 | 6 | | | | | | | | | | Y Mertens | 1 | 4 |
| 5 | A Nedovyesov | 7$^9$ | 6$^7$ | 3 | | | | | | | | | K Khachanov | 6 | 6 |
| | K Khachanov | 6$^7$ | 7$^9$ | 6 | | K Khachanov | 6 | 6 | | | | | | | |
| | A Šetkić | 2 | 3 | | Q | D Masur | 1 | 3 | | | | | | | |
| Q | D Masur | 6 | 6 | | | | | | | K Khachanov | 6 | 6 | | | |
| | A Kudryavtsev | 6 | 6 | | | | | | | A Karatsev | 4 | 4 | | | |
| | V Millot | 1 | 3 | | | A Kudryavtsev | 2 | 1$^r$ | | | | | | | |
| | A Karatsev | 6$^4$ | 6 | 6 | | A Karatsev | 6 | 1 | | | | | | | |
| 2 | M İlhan | 7$^7$ | 3 | 1 | | | | | | | | | | | |