# 2011 Proton Malaysian Open – Singles

Mikhail Youzhny was the defending champion but decided not to participate.
3rd seed Janko Tipsarević defeated Marcos Baghdatis 6–4, 7–5 to win his first ATP title in his fifth attempt.

## Seeds

The top four seeds received a bye into the second round.
* Nicolás Almagro (quarterfinals)
* Viktor Troicki (semifinals)
* Janko Tipsarević (champion)
* Jürgen Melzer (quarterfinals)
* Nikolay Davydenko (quarterfinals, retired)
* Alex Bogomolov Jr. (first round)
* Dmitry Tursunov (quarterfinals)
* Kei Nishikori (semifinals)

## 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 |
| 8 | Kei Nishikori | 4 | 3 | | | | |
| 3 | Janko Tipsarević | 6 | 6 | | | | |
| 3 | Janko Tipsarević | 6 | 6 | 3 | Janko Tipsarević | 6 | 7 |
| | | | | WC | Marcos Baghdatis | 4 | 5 |
| WC | Marcos Baghdatis | 6 | 6 | WC | Marcos Baghdatis | 4 | 5 |
| 2 | Viktor Troicki | 3 | 1 | | | | |

### 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 | N Almagro | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | M Kukushkin | 6 | 3 | 2$^r$ | | A Ramos | 6$^2$ | 6$^4$ | | | | | | | | | | |
| | A Ramos | 4 | 6 | 4 | | | | | | 1 | N Almagro | 7$^7$ | 4 | 4 | | | | |
| | M Zverev | 5 | 3 | | | | | | | 8 | K Nishikori | 6$^5$ | 6 | 6 | | | | |
| | P Petzschner | 7 | 6 | | | P Petzschner | 3 | 6 | 5 | | | | | | | | | |
| Q | T Gabashvili | 6 | 4 | 1 | 8 | K Nishikori | 6 | 4 | 7 | | | | | | | | | |
| 8 | K Nishikori | 3 | 6 | 6 | | | | | | | | | | | 8 | K Nishikori | 4 | 3 |
| | | | | | | | | | | | | | | | 3 | J Tipsarević | 6 | 6 |
| | | | | | 3 | J Tipsarević | 6 | 6 | | | | | | | | | | |
| | B Tomic | 2 | 2 | | | F Cipolla | 2 | 4 | | | | | | | | | | |
| | F Cipolla | 6 | 6 | | | | | | | 3 | J Tipsarević | 3 | | | | | | |
| | Ł Kubot | 6 | 6 | | | | | | | 5 | N Davydenko | 1 | r | | | | | |
| | L Rosol | 3 | 3 | | | Ł Kubot | 3 | 6$^2$ | | | | | | | | | | |
| | R Harrison | 3 | 2 | | 5 | N Davydenko | 6 | 7$^7$ | | | | | | | | | | |
| 5 | N Davydenko | 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 | Semifinals |
| 6 | A Bogomolov Jr. | 6$^3$ | 4 | | | | | | | | | | | | | |
| WC | M Baghdatis | 7$^7$ | 6 | | WC | M Baghdatis | 7 | 6 | | | | | | | | |
| Q | M Ledovskikh | 6$^5$ | 4 | | | S Devvarman | 5 | 4 | | | | | | | | |
| | S Devvarman | 7$^7$ | 6 | | | | | | WC | M Baghdatis | 6 | 7$^7$ | | | | |
| Q | R de Voest | 4 | 6 | 6 | | | | | 4 | J Melzer | 3 | 6$^3$ | | | | |
| | R Sweeting | 6 | 3 | 3 | Q | R de Voest | 0 | 4 | | | | | | | | |
| | | | | | 4 | J Melzer | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | | WC | M Baghdatis | 6 | 6 |
| 7 | D Tursunov | 6 | 2 | 6 | | | | | | | | | 2 | V Troicki | 3 | 1 |
| | P Capdeville | 2 | 6 | 1 | 7 | D Tursunov | 6 | 6 | | | | | | | | |
| WC | D Goffin | 6 | 7$^7$ | | WC | D Goffin | 3 | 3 | | | | | | | | |
| WC | M Ebden | 4 | 6$^4$ | | | | | | 7 | D Tursunov | 4 | 4 | | | | |
| | D Istomin | 6 | 6 | | | | | | 2 | V Troicki | 6 | 6 | | | | |
| Q | M Matosevic | 3 | 2 | | | D Istomin | 1 | 4 | | | | | | | | |
| | | | | | 2 | V Troicki | 6 | 6 | | | | | | | | |