# 2015 Chang-Sat Bangkok Open – Singles

Chung Hyeon was the defending champion but chose not to defend his title. Yūichi Sugita won the title defeating Marco Trungelliti 6–4, 6–2 in the final.

## Seeds

* Tatsuma Ito (first round)
* Somdev Devvarman (quarterfinals)
* Yūichi Sugita (champion)
* Niels Desein (first round)
* Jordan Thompson (semifinals)
* Chen Ti (semifinals)
* Alexander Sarkissian (quarterfinals)
* Yasutaka Uchiyama (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 |
| 5 | Jordan Thompson | 6 | 6$^2$ | 0 | | | | |
| | Marco Trungelliti | 4 | 7$^7$ | 6 | | | | |
| | Marco Trungelliti | 4 | 7$^7$ | 6 | | Marco Trungelliti | 4 | 2 |
| | | | | | 3 | Yūichi Sugita | 6 | 6 |
| 3 | Yūichi Sugita | 6 | 6 | | 3 | Yūichi Sugita | 6 | 6 |
| 6 | Ti Chen | 2 | 3 | | | | | |

### 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 | T Ito | 6 | 2 | 5 | | | | | | | | | | | | | | | |
| | B Mitchell | 2 | 6 | 7 | | B Mitchell | 6$^4$ | 6 | 6 | | | | | | | | | | |
| | N Meister | 1 | 6 | 4 | | S Balaji | 7$^7$ | 2 | 3 | | | | | | | | | | |
| | S Balaji | 6 | 1 | 6 | | | | | | | B Mitchell | 2$^r$ | | | | | | | |
| | D Wu | 4 | 4 | | | | | | | 5 | J Thompson | 5 | | | | | | | |
| | Gavin van Peperzeel | 6 | 6 | | | G van Peperzeel | 1 | 2 | | | | | | | | | | | |
| | D Medvedev | 4 | 4 | | 5 | J Thompson | 6 | 6 | | | | | | | | | | | |
| 5 | J Thompson | 6 | 6 | | | | | | | | | | | | 5 | J Thompson | 6 | 6$^2$ | 0 |
| 4 | N Desein | 1 | 4 | | | | | | | | | | | | | M Trungelliti | 4 | 7$^7$ | 6 |
| Q | C Rungkat | 6 | 6 | | Q | C Rungkat | 3 | 3 | | | | | | | | | | | |
| | L-c Huang | 6 | 4 | 3 | | M Trungelliti | 6 | 6 | | | | | | | | | | | |
| | M Trungelliti | 4 | 6 | 6 | | | | | | | M Trungelliti | 2 | 7 | 6 | | | | | |
| | Shuichi Sekiguchi | 6 | 7 | | | | | | | 7 | A Sarkissian | 6 | 5 | 1 | | | | | |
| | T Niki | 2 | 5 | | | S Sekiguchi | 5 | 4 | | | | | | | | | | | |
| | Z Li | 1 | 1 | | 7 | A Sarkissian | 7 | 6 | | | | | | | | | | | |
| 7 | A Sarkissian | 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 |
| 8 | Y Uchiyama | 6 | 7 | | | | | | | | | | | | | | |
| | D Propoggia | 4 | 5 | | 8 | Y Uchiyama | 3 | 6$^3$ | | | | | | | | | |
| | R Ramanathan | 3 | 0 | | | Z Zhang | 6 | 7$^7$ | | | | | | | | | |
| | Z Zhang | 6 | 6 | | | | | | | Z Zhang | 5 | 6$^2$ | | | | | |
| WC | K Wachiramanowong | 6 | 6$^4$ | 6 | | | | | 3 | Y Sugita | 7 | 7$^7$ | | | | | |
| Q | F Tearney | 3 | 7$^7$ | 2 | | K Wachiramanowong | 1 | 2 | | | | | | | | | |
| | J Wang | 3 | 3 | | 3 | Y Sugita | 6 | 6 | | | | | | | | | |
| 3 | Y Sugita | 6 | 6 | | | | | | | | | | | 3 | Y Sugita | 6 | 6 |
| 6 | T Chen | 6 | 7 | | | | | | | | | | | 6 | T Chen | 2 | 3 |
| WC | Phassawit Burapharitta | 3 | 5 | | 6 | T Chen | 7 | 6 | | | | | | | | | |
| | D-h Lee | 7 | 6$^2$ | 4 | Q | O Anderson | 5 | 4 | | | | | | | | | |
| Q | Oliver Anderson | 5 | 7$^7$ | 6 | | | | | 6 | T Chen | 0 | 7 | 6 | | | | |
| Q | A Whittington | 4 | 7$^7$ | 6 | | | | | 2 | S Devvarman | 6 | 5 | 3 | | | | |
| WC | P Isaro | 6 | 6$^3$ | 2 | Q | A Whittington | 5 | 2$^r$ | | | | | | | | | |
| WC | Puriwat Chatpatcharoen | 4 | 2 | | 2 | S Devvarman | 7 | 4 | | | | | | | | | |
| 2 | S Devvarman | 6 | 6 | | | | | | | | | | | | | | |