# 2003 Shanghai Open – Singles

Mark Philippoussis won in the final 6–2, 6–1 against Jiří Novák.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Jiří Novák (final)
* Martin Verkerk (second round)
* Mark Philippoussis (champion)
* n/a
* Nicolas Kiefer (second round)
* Hyung-Taik Lee (first round)
* Magnus Norman (quarterfinals)
* John van Lottum (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 | Semifinals | Final | Final | Final | Final |
| 1 | J Novák | 6 | 7$^8$ | | | | | | | | | | | | | | | | | | | | |
| | D van Scheppingen | 2 | 6$^6$ | | 1 | J Novák | 6$^3$ | 6 | 6 | | | | | | | | | | | | | | |
| Q | B Phau | 7$^7$ | 6$^3$ | 6$^5$ | | R Kendrick | 7$^7$ | 1 | 2 | | | | | | | | | | | | | | |
| | R Kendrick | 6$^4$ | 7$^7$ | 7$^7$ | | | | | | 1 | J Novák | 2 | | | | | | | | | | | |
| Q | J Vacek | 4 | 2 | | | | | | | 7 | M Norman | 1 | r | | | | | | | | | | |
| | F Verdasco | 6 | 6 | | | F Verdasco | 5 | 6$^5$ | | | | | | | | | | | | | | | |
| WC | B Zhu | 3 | 4 | | 7 | M Norman | 7 | 7$^7$ | | | | | | | | | | | | | | | |
| 7 | M Norman | 6 | 6 | | | | | | | | | | | | 1 | J Novák | 6$^7$ | 6 | 6 | | | | |
| LL | P Luczak | 7 | 4 | 2 | | | | | | | | | | | | W Arthurs | 7$^9$ | 3 | 2 | | | | |
| | W Arthurs | 5 | 6 | 6 | | W Arthurs | 6 | 6 | | | | | | | | | | | | | | | |
| LL | T Suzuki | 6 | 6 | | LL | T Suzuki | 1 | 2 | | | | | | | | | | | | | | | |
| | L Burgsmüller | 4 | 1 | | | | | | | | W Arthurs | 6 | 3 | 7$^7$ | | | | | | | | | |
| | I Karlović | 6$^3$ | 6 | 7$^7$ | | | | | | | I Karlović | 4 | 6 | 6$^2$ | | | | | | | | | |
| Q | C Mamiit | 7$^7$ | 2 | 6$^5$ | | I Karlović | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | T Enqvist | 6 | 3 | 3 | 5 | N Kiefer | 1 | 6$^5$ | | | | | | | | | | | | | | | |
| 5 | N Kiefer | 1 | 6 | 6 | | | | | | | | | | | | | | | | 1 | Jiří Novák | 2 | 1 |
| 6 | H-T Lee | 3 | 6$^4$ | | | | | | | | | | | | | | | | | 3 | Mark Philippoussis | 6 | 6 |
| | E Taino | 6 | 7$^7$ | | | E Taino | 7$^7$ | 4 | 6$^3$ | | | | | | | | | | | | | | |
| Q | A Kim | 6$^8$ | 6$^0$ | | WC | G Cañas | 6$^1$ | 6 | 7$^7$ | | | | | | | | | | | | | | |
| WC | G Cañas | 7$^7$ | 7$^7$ | | | | | | | WC | G Cañas | 3 | 6$^4$ | | | | | | | | | | |
| | J Salzenstein | 6 | 7$^7$ | | | | | | | 3 | M Philippoussis | 6 | 7$^7$ | | | | | | | | | | |
| | I Heuberger | 3 | 6$^3$ | | | J Salzenstein | 1 | 5 | | | | | | | | | | | | | | | |
| | A Vinciguerra | 4 | 6$^2$ | | 3 | M Philippoussis | 6 | 7 | | | | | | | | | | | | | | | |
| 3 | M Philippoussis | 6 | 7$^7$ | | | | | | | | | | | | 3 | M Philippoussis | 6 | 6 | | | | | |
| 8 | J van Lottum | 2 | 0 | | | | | | | | | | | | | R Söderling | 4 | 4 | | | | | |
| | R Söderling | 6 | 6 | | | R Söderling | 6 | 6 | | | | | | | | | | | | | | | |
| | J Gimelstob | 6 | 7$^7$ | | | J Gimelstob | 4 | 4 | | | | | | | | | | | | | | | |
| | A Waske | 3 | 6$^4$ | | | | | | | | R Söderling | 6$^2$ | 7$^7$ | 7$^7$ | | | | | | | | | |
| | S Draper | 6 | 6 | | | | | | | | S Draper | 7$^7$ | 6$^3$ | 6$^1$ | | | | | | | | | |
| | F Browne | 3 | 4 | | | S Draper | 6$^4$ | 1 | | | | | | | | | | | | | | | |
| WC | S-X Zeng | 2 | 3 | | 2 | M Verkerk | 7$^7$ | 0 | r | | | | | | | | | | | | | | |
| 2 | M Verkerk | 6 | 6 | | | | | | | | | | | | | | | | | | | | |