# 2009 SAT Bangkok Open – Singles

Florian Mayer won in the final of first edition of this tournament. He defeated Danai Udomchoke 7–5, 6–2.

## Seeds

* Andreas Beck (quarterfinals)
* Lee Hyung-taik (second round, retired)
* Go Soeda (quarterfinals)
* Chris Guccione (first round)
* Mathieu Montcourt (second round)
* Michail Elgin (first round)
* Daniel Brands (first round)
* Somdev Devvarman (first 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

### Final four

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final |
| Q | Noam Okun | 6 | 2 | 3 | | | |
| | Danai Udomchoke | 3 | 6 | 6 | | | |
| | Danai Udomchoke | 3 | 6 | 6 | Danai Udomchoke | 5 | 2 |
| | | | | | Florian Mayer | 7 | 6 |
| Q | Im Kyu-tae | 6$^4$ | 6$^2$ | | Florian Mayer | 7 | 6 |
| | Florian Mayer | 7$^7$ | 7$^7$ | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Beck | 6 | 6 | | | | | | | | | | | | | | | |
| | B Rehnquist | 3 | 4 | | 1 | A Beck | 6 | 6 | | | | | | | | | | |
| | É Roger-Vasselin | 6 | 6 | | | É Roger-Vasselin | 4 | 2 | | | | | | | | | | |
| | P Amritraj | 3 | 2 | | | | | | | 1 | A Beck | 4 | 2 | | | | | |
| | R Ram | 3 | 6$^7$ | | | | | | | Q | N Okun | 6 | 6 | | | | | |
| Q | R Bopanna | 6 | 7$^9$ | | Q | R Bopanna | 6 | 3 | 3 | | | | | | | | | |
| Q | N Okun | 7$^9$ | 6 | | Q | N Okun | 4 | 6 | 6 | | | | | | | | | |
| 6 | M Elgin | 6$^7$ | 4 | | | | | | | | | | | Q | N Okun | 6 | 2 | 3 |
| 4 | C Guccione | 7 | 4 | 2 | | | | | | | | | | | D Udomchoke | 3 | 6 | 6 |
| | D Udomchoke | 5 | 6 | 6 | | D Udomchoke | 7$^8$ | 7 | | | | | | | | | | |
| WC | G Dimitrov | 6 | 6 | | WC | G Dimitrov | 6$^6$ | 5 | | | | | | | | | | |
| WC | Peerakit Siributwong | 0 | 3 | | | | | | | | D Udomchoke | 6 | 6 | | | | | |
| | J Goodall | 7$^8$ | 3 | 2 | | | | | | | P Lorenzi | 2 | 4 | | | | | |
| | P Lorenzi | 6$^6$ | 6 | 6 | | P Lorenzi | 6 | 7 | | | | | | | | | | |
| | A Kudryavtsev | 4 | 6 | 1 | 5 | M Montcourt | 4 | 5 | | | | | | | | | | |
| 5 | M Montcourt | 6 | 3 | 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 |
| 8 | S Devvarman | 3 | 6 | 4 | | | | | | | | | | | | | | |
| | M Slanar | 6 | 4 | 6 | | M Slanar | 3 | r | | | | | | | | | | |
| SE | T Suzuki | 4 | 6 | 0 | Q | K-t Im | 6 | | | | | | | | | | | |
| Q | K-t Im | 6 | 4 | 6 | | | | | | Q | K-t Im | 6 | 6 | | | | | |
| WC | G Coria | 3 | 2 | | | | | | | 3 | G Soeda | 4 | 4 | | | | | |
| | H Levy | 6 | 6 | | | H Levy | 1 | 1 | r | | | | | | | | | |
| SE | S Bubka | 1 | 7 | 2 | 3 | G Soeda | 6 | 4 | | | | | | | | | | |
| 3 | G Soeda | 6 | 5 | 6 | | | | | | | | | | | Q | K-t Im | 6$^4$ | 6$^2$ |
| 7 | D Brands | 1 | 3 | | | | | | | | | | | | | F Mayer | 7$^7$ | 7$^7$ |
| | F Mayer | 6 | 6 | | | F Mayer | 7$^9$ | 6 | | | | | | | | | | |
| WC | K Wachiramanowong | 6 | 6 | | WC | K Wachiramanowong | 6$^7$ | 4 | | | | | | | | | | |
| | B Klein | 4 | 3 | | | | | | | | F Mayer | 6 | 2 | 6 | | | | |
| | D Kindlmann | 2 | 3 | | | | | | | | M İlhan | 4 | 6 | 1 | | | | |
| | M İlhan | 6 | 6 | | | M İlhan | 6 | 4 | | | | | | | | | | |
| Q | T Smyczek | 1 | 4 | | 2 | H-t Lee | 2 | 1 | r | | | | | | | | | |
| 2 | H-t Lee | 6 | 6 | | | | | | | | | | | | | | | |