title: 2011 Heineken Open – Singles
text: # 2011 Heineken Open – Singles
  
  John Isner was the defending champion but lost in the quarterfinals to David Nalbandian. David Ferrer won the title, defeating Nalbandian 6–3, 6–2 in the final.
  
  ## Seeds
  
  The top four seeds receive a bye to the second round.
  
  * David Ferrer (champion)
  * Nicolás Almagro (semifinals)
  * John Isner (quarterfinals)
  * Albert Montañés (second round)
  * Juan Mónaco (first round)
  * David Nalbandian (final)
  * Thomaz Bellucci (quarterfinals)
  * Philipp Kohlschreiber (quarterfinals)
  
  ## 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 |
  | - | - | - | - | - | - | - | - |
  | 1 | David Ferrer | 6 | 7 | | | | |
  | | Santiago Giraldo | 3 | 5 | | | | |
  | | Santiago Giraldo | 3 | 5 | 1 | David Ferrer | 6 | 6 |
  | | | | | 6 | David Nalbandian | 3 | 2 |
  | 6 | David Nalbandian | 6 | 6 | 6 | David Nalbandian | 3 | 2 |
  | 2/WC | Nicolás Almagro | 4 | 2 | | | | |
  
  ### 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 | D Ferrer | 3 | 7 | 6 | | | | | | | | | |
  | Q | P Riba | 3 | 4 | | | T Kamke | 6 | $6^1$ | 4 | | | | | | | | | |
  | | T Kamke | 6 | 6 | | | | | | | 1 | D Ferrer | 6 | $6^4$ | 6 | | | | |
  | Q | B Reynolds | 4 | 3 | | | | | | | 8 | P Kohlschreiber | 3 | 7 | 3 | | | | |
  | | M Granollers | 6 | 6 | | | M Granollers | 4 | 6 | 2 | | | | | | | | | |
  | | C Berlocq | 6 | 3 | 1 | 8 | P Kohlschreiber | 6 | 3 | 6 | | | | | | | | | |
  | 8 | P Kohlschreiber | 2 | 6 | 6 | | | | | | | | | | | 1 | D Ferrer | 6 | 7 |
  | | | | | | | | | | | | | | | | | S Giraldo | 3 | 5 |
  | | | | | | 4 | A Montañés | 3 | 6 | 4 | | | | | | | | | |
  | | S Giraldo | 6 | 6 | | | S Giraldo | 6 | 4 | 6 | | | | | | | | | |
  | | D Gimeno Traver | 2 | 4 | | | | | | | | S Giraldo | 6 | 6 | | | | | |
  | WC | M Venus | 7 | 3 | 0 | | | | | | 7 | T Bellucci | 2 | 4 | | | | | |
  | | T Robredo | $6^6$ | 6 | 6 | | T Robredo | 4 | 6 | 1 | | | | | | | | | |
  | Q | M Russell | 4 | 7 | 5 | 7 | T Bellucci | 6 | 3 | 6 | | | | | | | | | |
  | 7 | T Bellucci | 6 | $6^4$ | 7 | | | | | | | | | | | | | | |
  
  ### 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 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 6 | D Nalbandian | 7 | 6 | | | | | | | | | | | | | | | |
  | | F Fognini | $6^3$ | 4 | | 6 | D Nalbandian | 6 | 6 | | | | | | | | | | |
  | | T de Bakker | 1 | 7 | $6^3$ | | P Petzschner | 3 | 2 | | | | | | | | | | |
  | | P Petzschner | 6 | $6^5$ | 7 | | | | | | 6 | D Nalbandian | 6 | 7 | | | | | |
  | | R Haase | 3 | 7 | 7 | | | | | | 3 | J Isner | 4 | $6^3$ | | | | | |
  | | P Cuevas | 6 | $6^3$ | $6^3$ | | R Haase | 6 | $6^4$ | 5 | | | | | | | | | |
  | | | | | | 3 | J Isner | 3 | 7 | 7 | | | | | | | | | |
  | | | | | | | | | | | | | | | | 6 | D Nalbandian | 6 | 6 |
  | 5 | J Mónaco | 4 | 3 | | | | | | | | | | | | 2/WC | N Almagro | 4 | 2 |
  | Q | A Mannarino | 6 | 6 | | Q | A Mannarino | 7 | 6 | | | | | | | | | | |
  | WC | A Clément | 4 | 6 | 7 | WC | A Clément | 5 | 4 | | | | | | | | | | |
  | | X Malisse | 6 | 2 | 5 | | | | | | Q | A Mannarino | $6^3$ | 7 | 2 | | | | |
  | | V Hănescu | 7 | $6^3$ | 6 | | | | | | 2/WC | N Almagro | 7 | $6^1$ | 6 | | | | |
  | | K Anderson | $6^7$ | 7 | 4 | | V Hănescu | 4 | $6^3$ | | | | | | | | | | |
  | | | | | | 2/WC | N Almagro | 6 | 7 | | | | | | | | | | |
  