# 2003 RCA Championships – Singles

Greg Rusedski was the defending champion but lost in the second round to Scott Draper.
Andy Roddick won in the final 7–6$^{(7–2)}$, 6–4 against Paradorn Srichaphan.

## Seeds

All sixteen seeds received a bye to the second round.
* Andy Roddick (champion)
* Paradorn Srichaphan (final)
* Sjeng Schalken (semifinals)
* Yevgeny Kafelnikov (third round)
* Jan-Michael Gambill (third round)
* Mardy Fish (third round)
* Robby Ginepri (quarterfinals)
* Hyung-Taik Lee (second round)
* Xavier Malisse (quarterfinals)
* Greg Rusedski (second round)
* Mario Ančić (second round)
* Brian Vahaly (second round)
* Lars Burgsmüller (third round)
* Nicolas Kiefer (quarterfinals)
* Kenneth Carlsen (second round)
* Justin Gimelstob (second 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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Andy Roddick | 6 | 6 | | | | | |
| 3 | Sjeng Schalken | 3 | 2 | | | | | |
| 3 | Sjeng Schalken | 3 | 2 | | 1 | Andy Roddick | 7$^7$ | 6 |
| | | | | | 2 | Paradorn Srichaphan | 6$^2$ | 4 |
| | Nicolas Thomann | 6 | 6$^5$ | 3 | 2 | Paradorn Srichaphan | 6$^2$ | 4 |
| 2 | Paradorn Srichaphan | 4 | 7$^7$ | 6 | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | A Roddick | 6$^5$ | 6 | 7$^7$ | | | | | | | | |
| | C Saulnier | 6 | 6 | | | C Saulnier | 7$^7$ | 3 | 6$^4$ | | | | | | | | |
| Q | M Behrmann | 0 | 3 | | | | | | | 1 | A Roddick | 6 | 6 | | | | |
| | G Carraz | 4 | 6 | 6 | | | | | | | G Carraz | 3 | 4 | | | | |
| | N Okun | 6 | 3 | 4 | | G Carraz | 6 | 3 | 7$^7$ | | | | | | | | |
| | | | | | 15 | K Carlsen | 4 | 6 | 6$^5$ | | | | | | | | |
| | | | | | | | | | | | | | | 1 | A Roddick | 6 | 6 |
| | | | | | | | | | | | | | | 9 | X Malisse | 4 | 1 |
| | | | | | 9 | X Malisse | 6 | 6 | | | | | | | | | |
| WC | R Ram | 6 | 6 | | WC | R Ram | 2 | 4 | | | | | | | | | |
| LL | I Levine | 1 | 3 | | | | | | | 9 | X Malisse | 6 | 6 | | | | |
| | T Enqvist | 7$^7$ | 3 | 6 | | | | | | 5 | J-M Gambill | 4 | 2 | | | | |
| | J Vacek | 6$^5$ | 6 | 3 | | T Enqvist | 2 | 2 | | | | | | | | | |
| | | | | | 5 | J-M Gambill | 6 | 6 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | S Schalken | 6 | 6 | | | | | | | | | | |
| Q | J Benneteau | 1 | 0 | | | I Miranda | 3 | 1 | | | | | | | | | | |
| | I Miranda | 6 | 6 | | | | | | | 3 | S Schalken | 6 | 6 | | | | | |
| | E Taino | 3 | 6 | 7 | | | | | | 13 | L Burgsmüller | 4 | 2 | | | | | |
| | M Chang | 6 | 3 | 5 | | E Taino | 3 | 4 | | | | | | | | | | |
| | | | | | 13 | L Burgsmüller | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 3 | S Schalken | 1 | 6 | 6 |
| | | | | | | | | | | | | | | 7 | R Ginepri | 6 | 1 | 2 |
| | | | | | 11 | M Ančić | 3 | 6 | 5 | | | | | | | | | |
| | I Heuberger | 6 | 6 | | | I Heuberger | 6 | 2 | 7 | | | | | | | | | |
| | H Levy | 1 | 1 | | | | | | | | I Heuberger | 1 | 3 | | | | | |
| Q | A Ram | 1 | 6 | 4 | | | | | | 7 | R Ginepri | 6 | 6 | | | | | |
| | P Luczak | 6 | 3 | 6 | | P Luczak | 3 | 3 | | | | | | | | | | |
| | | | | | 7 | R Ginepri | 6 | 6 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | H-T Lee | 4 | 5 | | | | | | | | | |
| | N Thomann | 6 | 6 | | | N Thomann | 6 | 7 | | | | | | | | | |
| Q | D Ayala | 4 | 4 | | | | | | | | N Thomann | 6 | 6 | | | | |
| | R Delgado | 4 | 6 | 4 | | | | | | | W Moodie | 3 | 4 | | | | |
| | W Moodie | 6 | 2 | 6 | | W Moodie | 6 | 4 | 7$^7$ | | | | | | | | |
| | | | | | 12 | B Vahaly | 3 | 6 | 6$^1$ | | | | | | | | |
| | | | | | | | | | | | | | | | N Thomann | 7$^7$ | 7 |
| | | | | | | | | | | | | | | 14 | N Kiefer | 6$^2$ | 4 |
| | | | | | 14 | N Kiefer | 6 | 6 | | | | | | | | | |
| Q | P Amritraj | 6 | 3 | 7 | Q | P Amritraj | 3 | 1 | | | | | | | | | |
| | S Roitman | 3 | 6 | 5 | | | | | | 14 | N Kiefer | 6 | 6 | | | | |
| Q | N Zimonjić | 6$^5$ | 4 | | | | | | | 4 | Y Kafelnikov | 3 | 4 | | | | |
| | J Tipsarević | 7$^7$ | 6 | | | J Tipsarević | 5 | 3 | | | | | | | | | |
| | | | | | 4 | Y Kafelnikov | 7 | 6 | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | M Fish | 7 | 6$^5$ | 6 | | | | | | | | | |
| | C Mamiit | 1 | 3 | | WC | C Guccione | 5 | 7$^7$ | 4 | | | | | | | | | |
| WC | C Guccione | 6 | 6 | | | | | | | 6 | M Fish | 6 | 6$^3$ | 3 | | | | |
| | S Draper | 7 | 6 | | | | | | | | S Draper | 3 | 7$^7$ | 6 | | | | |
| WC | B Reynolds | 5 | 3 | | | S Draper | 3 | 7$^7$ | 7$^7$ | | | | | | | | | |
| | | | | | 10 | G Rusedski | 6 | 6$^4$ | 6$^4$ | | | | | | | | | |
| | | | | | | | | | | | | | | | | S Draper | 4 | 2 |
| | | | | | | | | | | | | | | | 2 | P Srichaphan | 6 | 6 |
| | | | | | 16 | J Gimelstob | 2 | 4 | | | | | | | | | | |
| | A Kim | 3 | 6 | 4 | | A Bogomolov Jr. | 6 | 6 | | | | | | | | | | |
| | A Bogomolov Jr. | 6 | 1 | 6 | | | | | | | A Bogomolov Jr. | 4 | 3 | | | | | |
| | R Mello | 7$^7$ | 4 | 5 | | | | | | 2 | P Srichaphan | 6 | 6 | | | | | |
| WC | A Delić | 6$^3$ | 6 | 7 | WC | A Delić | 7$^7$ | 6$^3$ | 1 | | | | | | | | | |
| | | | | | 2 | P Srichaphan | 6$^5$ | 7$^7$ | 6 | | | | | | | | | |