# 2011 Busan Open Challenger Tennis – Singles

Lim Yong-kyu was the defending champion, but lost to Greg Jones in the 2nd round. Dudi Sela defeated Tatsuma Ito 6–2, 6–7(5), 6–3 in the final match.

## Seeds

* Lu Yen-hsun (semifinals)
* Go Soeda (semifinals)
* Tatsuma Ito (final)
* Dudi Sela (champion)
* Matthew Ebden (second round)
* Yuichi Sugita (quarterfinals)
* Danai Udomchoke (second round)
* Andre Begemann (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1/WC | Lu Yen-hsun | 5 | 4 | | | | | | |
| 3 | Tatsuma Ito | 7 | 6 | | | | | | |
| 3 | Tatsuma Ito | 7 | 6 | | 3 | Tatsuma Ito | 2 | 7 | 3 |
| | | | | | 4 | Dudi Sela | 6 | 6$^5$ | 6 |
| 4 | Dudi Sela | 1 | 7 | 6 | 4 | Dudi Sela | 6 | 6$^5$ | 6 |
| 2 | Go Soeda | 6 | 6$^4$ | 4 | | | | | |

### 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 | Y-h Lu | 6 | 6 | | | | | | | | | | | | | | | |
| | H Kondo | 3 | 2 | | 1/WC | Y-h Lu | 6 | 6 | | | | | | | | | | |
| | L Walter | 6 | 6 | | | L Walter | 1 | 1 | | | | | | | | | | |
| WC | Nam Ji-sung | 1 | 1 | | | | | | | 1/WC | Y-h Lu | 3 | 6 | 6 | | | | |
| | K Kim | 2 | 4 | | | | | | | | G Jones | 6 | 1 | 3 | | | | |
| | Y-k Lim | 6 | 6 | | | Y-k Lim | 4 | 7 | 3 | | | | | | | | | |
| | G Jones | 7 | 6 | | | G Jones | 6 | 6$^1$ | 6 | | | | | | | | | |
| 8 | A Begemann | 6$^4$ | 2 | | | | | | | | | | | | 1/WC | Y-h Lu | 5 | 4 |
| 3 | T Ito | 6 | 6 | | | | | | | | | | | | 3 | T Ito | 7 | 6 |
| | R Borvanov | 3 | 2 | | 3 | T Ito | 6 | 6 | | | | | | | | | | |
| | H Heliövaara | 3 | 1 | | | K-t Im | 1 | 3 | | | | | | | | | | |
| | K-t Im | 6 | 6 | | | | | | | 3 | T Ito | 6 | 6 | | | | | |
| | M Gong | 4 | 7 | 1 | | | | | | | A Weintraub | 4 | 3 | | | | | |
| | A Weintraub | 6 | 5 | 6 | | A Weintraub | 4 | 7 | 6 | | | | | | | | | |
| Q | J-s An | 5 | 0$^r$ | | 5 | M Ebden | 6 | 5 | 3 | | | | | | | | | |
| 5 | M Ebden | 7 | 1 | | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | Y Sugita | 6 | 6 | | | | | | | | | | | | | | | |
| | M Venus | 4 | 1 | | 6 | Y Sugita | 3 | 6 | 6 | | | | | | | | | |
| WC | S-y Jeong | 2 | 6 | 6 | WC | S-y Jeong | 6 | 4 | 2 | | | | | | | | | |
| | E Kirillov | 6 | 4 | 3 | | | | | | 6 | Y Sugita | 3 | 1 | | | | | |
| | D Yoo | 1 | 6$^6$ | | | | | | | 4 | D Sela | 6 | 6 | | | | | |
| Q | T Matsui | 6 | 7 | | Q | T Matsui | 7 | 4 | 1 | | | | | | | | | |
| Q | M Ledovskikh | 4 | 3 | | 4 | D Sela | 6$^4$ | 6 | 6 | | | | | | | | | |
| 4 | D Sela | 6 | 6 | | | | | | | | | | | 4 | D Sela | 1 | 7 | 6 |
| 7 | D Udomchoke | 6 | 6 | | | | | | | | | | | 2 | G Soeda | 6 | 6$^4$ | 4 |
| | M McClune | 2 | 4 | | 7 | D Udomchoke | 6$^4$ | 2 | | | | | | | | | | |
| | V Pospisil | 6 | 6 | | | V Pospisil | 7 | 6 | | | | | | | | | | |
| | M Mečíř Jr. | 4 | 3 | | | | | | | | V Pospisil | 2 | 4 | | | | | |
| Q | T Suzuki | 2 | 6$^5$ | | | | | | | 2 | G Soeda | 6 | 6 | | | | | |
| WC | H-j Kim | 6 | 7 | | WC | H-j Kim | 2 | 2 | | | | | | | | | | |
| | J Baker | 3 | 3 | | 2 | G Soeda | 6 | 6 | | | | | | | | | | |
| 2 | G Soeda | 6 | 6 | | | | | | | | | | | | | | | |