| Singles | |
|---|---|
| 2004 Western & Southern Financial Group Masters | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 3–6, 6–2 |
Andy Roddick was the defending champion, but lost in the semifinals this year.
Andre Agassi won the title, defeating Lleyton Hewitt 6–3, 3–6, 6–2 in the final.