title: 2003 Heineken Open – Singles
text: # 2003 Heineken Open – Singles
  
  Greg Rusedski was the defending champion of the singles event of the Heineken Open tennis tournament, held in Auckland, New Zealand, but did not compete that year.
  
  Fourth-seeded Gustavo Kuerten won in the final 6–3, 7–5 against unseeded Dominik Hrbatý.
  
  ## Seeds
  
  A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
  
  * Jiří Novák (quarterfinals)
  * David Nalbandian (first round)
  * Fernando González (second round)
  * Gustavo Kuerten (champion)
  * José Acasuso (first round)
  * Jan-Michael Gambill (second round)
  * Guillermo Coria (quarterfinals)
  * Davide Sanguinetti (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
  
  | 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 | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | J Novák | 6 | 6 | | | | | | | | | | | | | | | | | | | |
  | Q | R Kendrick | 2 | 3 | | 1 | J Novák | 1 | $7^8$ | 6 | | | | | | | | | | | | | |
  | | A Calleri | $6^5$ | 5 | | Q | R Ginepri | 6 | $6^6$ | 3 | | | | | | | | | | | | | |
  | Q | R Ginepri | $7^7$ | 7 | | | | | | | 1 | J Novák | $7^7$ | 2 | $6^3$ | | | | | | | | |
  | | A Sá | $7^9$ | 5 | 4 | | | | | | | F Mantilla | $6^5$ | 6 | $7^7$ | | | | | | | | |
  | | K Carlsen | $6^7$ | 7 | 6 | | K Carlsen | 4 | 4 | | | | | | | | | | | | | | |
  | | F Mantilla | 6 | 7 | | | F Mantilla | 6 | 6 | | | | | | | | | | | | | | |
  | 5 | J Acasuso | 3 | 5 | | | | | | | | | | | | | F Mantilla | 2 | 2 | | | | |
  | 3 | F González | 3 | $7^7$ | 6 | | | | | | | | | | | | D Hrbatý | 6 | 6 | | | | |
  | | F López | 6 | $6^5$ | 2 | 3 | F González | 4 | 3 | | | | | | | | | | | | | | |
  | | A Martín | 3 | 2 | | | D Ferrer | 6 | 6 | | | | | | | | | | | | | | |
  | | D Ferrer | 6 | 6 | | | | | | | | D Ferrer | 5 | 3 | | | | | | | | | |
  | | D Hrbatý | 6 | 6 | | | | | | | | D Hrbatý | 7 | 6 | | | | | | | | | |
  | WC | S Rea | 4 | 2 | | | D Hrbatý | 6 | $6^6$ | $7^7$ | | | | | | | | | | | | | |
  | | M Kratochvil | 1 | 3 | | 6 | J-M Gambill | 3 | $7^8$ | $6^4$ | | | | | | | | | | | | | |
  | 6 | J-M Gambill | 6 | 6 | | | | | | | | | | | | | | | | | Dominik Hrbatý | 3 | 5 |
  | 7 | G Coria | 2 | 6 | 6 | | | | | | | | | | | | | | | 4 | Gustavo Kuerten | 6 | 7 |
  | | D Sánchez | 6 | 2 | 4 | 7 | G Coria | 6 | 6 | | | | | | | | | | | | | | |
  | WC | L Horna | 6 | $6^5$ | 2 | | F Vicente | 2 | 2 | | | | | | | | | | | | | | |
  | | F Vicente | 3 | $7^7$ | 6 | | | | | | 7 | G Coria | 5 | 6 | 2 | | | | | | | | |
  | Q | M Russell | $7^7$ | 6 | | | | | | | 4 | G Kuerten | 7 | 4 | 6 | | | | | | | | |
  | | R Štěpánek | $6^4$ | 4 | | Q | M Russell | 6 | 4 | 2 | | | | | | | | | | | | | |
  | Q | M Verkerk | $6^5$ | 4 | | 4 | G Kuerten | 4 | 6 | 6 | | | | | | | | | | | | | |
  | 4 | G Kuerten | $7^7$ | 6 | | | | | | | | | | | | 4 | G Kuerten | 6 | 6 | | | | |
  | 8 | D Sanguinetti | 3 | 3 | | | | | | | | | | | | | M Zabaleta | 3 | 3 | | | | |
  | | R Sluiter | 6 | 6 | | | R Sluiter | 3 | 6 | 1 | | | | | | | | | | | | | |
  | | S Koubek | 6 | 6 | | | S Koubek | 6 | 3 | 6 | | | | | | | | | | | | | |
  | WC | M Nielsen | 3 | 2 | | | | | | | | S Koubek | 2 | 1 | | | | | | | | | |
  | | A Dupuis | 3 | 4 | | | | | | | | M Zabaleta | 6 | 6 | | | | | | | | | |
  | | V Spadea | 6 | 6 | | | V Spadea | 4 | 3 | | | | | | | | | | | | | | |
  | | M Zabaleta | 2 | $7^7$ | 6 | | M Zabaleta | 6 | 6 | | | | | | | | | | | | | | |
  | 2 | D Nalbandian | 6 | $6^3$ | 3 | | | | | | | | | | | | | | | | | | |
  