| Singles | |
|---|---|
| 2004 Mercedes-Benz Cup | |
| Champion |  Tommy Haas |
| Runner-up | Nicolas Kiefer |
| Final score | 7–6(8–6), 6–4 |
| Draw | 32 (4 Q / 3 WC ) |
| Seeds | 8 |
Wayne Ferreira was the defending champion, but lost in the first round this year.
Tommy Haas won the tournament, beating Nicolas Kiefer in the final, 7–6(8–6), 6–4.
Andre Agassi (quarterfinals)
Paradorn Srichaphan (second round) Mardy Fish (quarterfinals)
Dominik Hrbatý (first round)
Sjeng Schalken (second round) Vincent Spadea (first round) Taylor Dent (first round) Robby Ginepri (first round)| Semifinals | Final | ||||||||||||
| Tommy Haas | 7 | 7 | |||||||||||
 Cyril Saulnier | 5 | 5 | |||||||||||
| Tommy Haas | 78 | 6 | |||||||||||
| Nicolas Kiefer | 66 | 4 | |||||||||||
| Nicolas Kiefer | 3 | 6 | 6 | ||||||||||
| WC | Jeff Morrison | 6 | 2 | 4 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Agassi | 6 | 6 | ||||||||||||||||||||||||
| A Bogomolov Jr. | 3 | 1 | 1 | A Agassi | 77 | 6 | |||||||||||||||||||||
| J Benneteau | 6 | 7 | J Benneteau | 64 | 2 | ||||||||||||||||||||||
 M Philippoussis | 1 | 5 | 1 | A Agassi | 65 | 78 | 3 | ||||||||||||||||||||
| W Arthurs | 63 | 3 | T Haas | 77 | 66 | 6 | |||||||||||||||||||||
 K Carlsen | 77 | 6 | K Carlsen | 2 | 0 | ||||||||||||||||||||||
| T Haas | 6 | 6 | T Haas | 6 | 6 | ||||||||||||||||||||||
| 8 | R Ginepri | 4 | 3 | T Haas | 7 | 7 | |||||||||||||||||||||
| 3 | M Fish | 77 | 6 | C Saulnier | 5 | 5 | |||||||||||||||||||||
 J Vacek | 65 | 2 | 3 | M Fish | 6 | 3 | 6 | ||||||||||||||||||||
 G Elseneer | 2 | 6 | 7 | G Elseneer | 2 | 6 | 3 | ||||||||||||||||||||
| Q | B Vahaly | 6 | 4 | 5 | 3 | M Fish | 66 | 67 | |||||||||||||||||||
| A Dupuis | 4 | 77 | 4 | C Saulnier | 78 | 79 | |||||||||||||||||||||
| J Hernych | 6 | 60 | 6 | J Hernych | 3 | 77 | 3 | ||||||||||||||||||||
| C Saulnier | 6 | C Saulnier | 6 | 65 | 6 | ||||||||||||||||||||||
| 6 | V Spadea | 4 | r | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | T Dent | 67 | 6 | 2 | |||||||||||||||||||||||
 G Rusedski | 79 | 3 | 6 | G Rusedski | 3 | 6 | 77 | ||||||||||||||||||||
| Q |  A Ram | 6 | 61 | 4 | K Beck | 6 | 3 | 62 | |||||||||||||||||||
| K Beck | 4 | 77 | 6 | G Rusedski | 1 | 4 | |||||||||||||||||||||
| Q | G Weiner | 3 | 7 | 6 | N Kiefer | 6 | 6 | ||||||||||||||||||||
| WC |  H-t Lee | 6 | 5 | 3 | Q | G Weiner | 4 | 5 | |||||||||||||||||||
| N Kiefer | 77 | 4 | 6 | N Kiefer | 6 | 7 | |||||||||||||||||||||
| 4 | D Hrbatý | 60 | 6 | 2 | N Kiefer | 3 | 6 | 6 | |||||||||||||||||||
| 5 | S Schalken | 6 | 6 | WC | J Morrison | 6 | 2 | 4 | |||||||||||||||||||
| G Carraz | 4 | 4 | 5 | S Schalken | 65 | 6 | 5 | ||||||||||||||||||||
 W Moodie | 6 | 6 | W Moodie | 77 | 2 | 7 | |||||||||||||||||||||
| Q | Z Fleishman | 4 | 2 | W Moodie | 3 | 4 | |||||||||||||||||||||
| WC | J Morrison | 6 | 6 | WC | J Morrison | 6 | 6 | ||||||||||||||||||||
| WC | L Cook | 2 | 2 | WC | J Morrison | 7 | 6 | ||||||||||||||||||||
| W Ferreira | 3 | 64 | 2 | P Srichaphan | 5 | 4 | |||||||||||||||||||||
| 2 | P Srichaphan | 6 | 77 | ||||||||||||||||||||||||
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