# 2003 ABN AMRO World Tennis Tournament – Singles

Nicolas Escudé was the defending champion but lost in the quarterfinals against Sébastien Grosjean.
Max Mirnyi won in the final 7–6$^{(7–3)}$, 6–4 against Raemon Sluiter.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Juan Carlos Ferrero (quarterfinals, retired because of a sprained ankle)
* Roger Federer (semifinals)
* Marat Safin (second round)
* Albert Costa (first round)
* Tim Henman (first round)
* Sébastien Grosjean (semifinals)
* Àlex Corretja (first round)
* Sjeng Schalken (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
| 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 | Semifinals | Final | Final | Final | Final |
| 1 | J C Ferrero | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | | | | | | | |
| | W Arthurs | 6$^4$ | 6$^5$ | | 1 | J C Ferrero | 3 | 6 | 6 | | | | | | | | | | | | | | |
| Q | P Wessels | 2 | 2 | | | J Björkman | 6 | 4 | 1 | | | | | | | | | | | | | | |
| | J Björkman | 6 | 6 | | | | | | | 1 | J C Ferrero | 2$^r$ | | | | | | | | | | | |
| WC | M Verkerk | 6 | 4 | 6$^3$ | | | | | | WC | R Sluiter | 1 | | | | | | | | | | | |
| WC | R Sluiter | 3 | 6 | 7$^7$ | WC | R Sluiter | 7$^9$ | 2 | 6 | | | | | | | | | | | | | | |
| | J Nieminen | 6 | 6 | | | J Nieminen | 6$^7$ | 6 | 3 | | | | | | | | | | | | | | |
| 7 | À Corretja | 4 | 0 | | | | | | | | | | | | WC | R Sluiter | 6 | 6 | | | | | |
| 4 | A Costa | 3 | 3 | | | | | | | | | | | | 6 | S Grosjean | 3 | 3 | | | | | |
| | N Escudé | 6 | 6 | | | N Escudé | 6 | 6$^1$ | 7$^7$ | | | | | | | | | | | | | | |
| | T Robredo | 6$^5$ | 7$^7$ | 2 | WC | R Krajicek | 3 | 7$^7$ | 6$^4$ | | | | | | | | | | | | | | |
| WC | R Krajicek | 7$^7$ | 6$^5$ | 6 | | | | | | | N Escudé | 7 | 6$^3$ | 4$^r$ | | | | | | | | | |
| | D Hrbatý | 6 | 6 | | | | | | | 6 | S Grosjean | 5 | 7$^7$ | 4 | | | | | | | | | |
| | A Voinea | 4 | 2 | | | D Hrbatý | 5 | 3 | | | | | | | | | | | | | | | |
| Q | R Furlan | 3 | 4 | | 6 | S Grosjean | 7 | 6 | | | | | | | | | | | | | | | |
| 6 | S Grosjean | 6 | 6 | | | | | | | | | | | | | | | | | WC | Raemon Sluiter | 6$^3$ | 4 |
| 5 | T Henman | 4 | 2 | | | | | | | | | | | | | | | | | | Max Mirnyi | 7$^7$ | 6 |
| | I Ljubičić | 6 | 6 | | | I Ljubičić | 2$^r$ | | | | | | | | | | | | | | | | |
| Q | M Ančić | 7$^7$ | 6$^5$ | 4 | | M Mirnyi | 4 | | | | | | | | | | | | | | | | |
| | M Mirnyi | 6$^5$ | 7$^7$ | 6 | | | | | | | M Mirnyi | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | F López | 2 | 0 | | | | | | | | Y Kafelnikov | 6$^5$ | 6$^4$ | | | | | | | | | | |
| | Y Kafelnikov | 6 | 6 | | | Y Kafelnikov | 4 | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | X Malisse | 5 | 3 | | 3 | M Safin | 6 | 6$^5$ | 4 | | | | | | | | | | | | | | |
| 3 | M Safin | 7 | 6 | | | | | | | | | | | | | M Mirnyi | 5 | 6 | 6 | | | | |
| 8 | S Schalken | 6 | 6 | | | | | | | | | | | | 2 | R Federer | 7 | 3 | 4 | | | | |
| Q | C Rochus | 3 | 3 | | 8 | S Schalken | 7 | 6 | | | | | | | | | | | | | | | |
| | O Rochus | 6 | 6 | | | O Rochus | 5 | 2 | | | | | | | | | | | | | | | |
| | S Koubek | 2 | 1 | | | | | | | 8 | S Schalken | 2 | 4 | | | | | | | | | | |
| | A Pavel | 4 | 6 | 2 | | | | | | 2 | R Federer | 6 | 6 | | | | | | | | | | |
| | F Santoro | 6 | 4 | 6 | | F Santoro | 0 | 4 | | | | | | | | | | | | | | | |
| | T Enqvist | 6 | 3 | 4 | 2 | R Federer | 6 | 6 | | | | | | | | | | | | | | | |
| 2 | R Federer | 3 | 6 | 6 | | | | | | | | | | | | | | | | | | | |