# 2015 Emami Kolkata Open ATP Challenger Tour – Singles

Ilija Bozoljac was the defending champion, but lost in the first round.
Radu Albot won the title, defeating James Duckworth in the final, 7–6$^{(7–0)}$, 6–1.

## Seeds

* James Duckworth (final)
* Alexander Kudryavtsev (quarterfinals)
* Ruben Bemelmans (semifinals)
* Somdev Devvarman (first round)
* Luke Saville (first round)
* Radu Albot (champion)
* Alex Bolt (second round, withdrew)
* Kimmer Coppejans (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 | Semifinals | Final | Final | Final | Final |
| 1 | James Duckworth | 2 | 6 | 6 | | | | |
| 3 | Ruben Bemelmans | 6 | 3 | 1 | | | | |
| 3 | Ruben Bemelmans | 6 | 3 | 1 | 1 | James Duckworth | 6$^0$ | 1 |
| | | | | | 6 | Radu Albot | 7$^7$ | 6 |
| | Chen Ti | 4 | 6 | 2 | 6 | Radu Albot | 7$^7$ | 6 |
| 6 | Radu Albot | 6 | 2 | 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 | Semifinals |
| 1 | J Duckworth | 6 | 3 | 6 | | | | | | | | | | | | | | | |
| Q | VS Prashanth | 3 | 6 | 3 | 1 | J Duckworth | 6 | 6 | | | | | | | | | | | |
| WC | J Nedunchezhiyan | 6 | 2 | 0 | WC | S Singh | 2 | 1 | | | | | | | | | | | |
| WC | S Singh | 2 | 6 | 6 | | | | | | 1 | J Duckworth | 6 | 6 | | | | | | |
| WC | S Nagal | 5 | 5 | | | | | | | | E Gerasimov | 4 | 2 | | | | | | |
| | E Gerasimov | 7 | 7 | | | E Gerasimov | w/o | | | | | | | | | | | | |
| | S Myneni | 5 | 4 | | 7 | A Bolt | | | | | | | | | | | | | |
| 7 | A Bolt | 7 | 6 | | | | | | | | | | | | 1 | J Duckworth | 2 | 6 | 6 |
| 3 | R Bemelmans | 6 | 1 | 6 | | | | | | | | | | | 3 | R Bemelmans | 6 | 3 | 1 |
| | M Safwat | 1 | 6 | 3 | 3 | R Bemelmans | 3 | 6 | 6 | | | | | | | | | | |
| Q | K Krawietz | 6 | 7$^7$ | | Q | K Krawietz | 6 | 2 | 3 | | | | | | | | | | |
| Q | Vinayak Sharma Kaza | 2 | 6$^4$ | | | | | | | 3 | R Bemelmans | 6$^5$ | 7$^{10}$ | 6 | | | | | |
| | S Balaji | 5 | 5 | | | | | | | Q | R Becker | 7$^7$ | 6$^8$ | 2 | | | | | |
| Q | R Becker | 7 | 7 | | Q | R Becker | 4 | 6 | 6 | | | | | | | | | | |
| | T Androić | 2 | 4 | | 8 | K Coppejans | 6 | 3 | 3 | | | | | | | | | | |
| 8 | K Coppejans | 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 | Semifinals | Semifinals |
| 5 | L Saville | 3 | 6 | 2 | | | | | | | | | | | | | | | |
| | T Chen | 6 | 3 | 6 | | T Chen | 6 | 4 | 6 | | | | | | | | | | |
| | I Bozoljac | 6 | 6$^4$ | 3 | | FF Silva | 0 | 6 | 2 | | | | | | | | | | |
| | FF Silva | 4 | 7$^7$ | 6 | | | | | | | T Chen | 6 | 3 | 7$^7$ | | | | | |
| | P Krstin | 6 | 3 | 1$^r$ | | | | | | | R Ramanathan | 4 | 6 | 6$^5$ | | | | | |
| | M Janković | 4 | 6 | 3 | | M Janković | 1 | 7 | 5 | | | | | | | | | | |
| | R Ramanathan | 4 | 6 | 6 | | R Ramanathan | 6 | 5 | 7 | | | | | | | | | | |
| 4 | S Devvarman | 6 | 3 | 4 | | | | | | | | | | | | T Chen | 4 | 6 | 2 |
| 6 | R Albot | 7 | 4 | 6 | | | | | | | | | | | 6 | R Albot | 6 | 2 | 6 |
| | N Mektić | 5 | 6 | 3 | 6 | R Albot | 6 | 2 | 6 | | | | | | | | | | |
| | E López-Pérez | 2 | 2 | | | Y Bhambri | 3 | 6 | 1 | | | | | | | | | | |
| | Y Bhambri | 6 | 6 | | | | | | | 6 | R Albot | 7$^7$ | 6 | | | | | | |
| | T-h Yang | 6$^5$ | 6 | 6 | | | | | | 2 | A Kudryavtsev | 6$^5$ | 3 | | | | | | |
| | D Pérez Sanz | 7$^7$ | 1 | 2 | | T-h Yang | 7$^9$ | 1 | 0 | | | | | | | | | | |
| WC | P Gunneswaran | 3 | 6$^7$ | | 2 | A Kudryavtsev | 6$^7$ | 6 | 6 | | | | | | | | | | |
| 2 | A Kudryavtsev | 6 | 7$^9$ | | | | | | | | | | | | | | | | |