| Men's Singles | |
|---|---|
| 2004 Pacific Life Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 6–3 |
Lleyton Hewitt was the two-time defending champion but lost in the third round to Juan Ignacio Chela.
Roger Federer won in the final 6–3, 6–3 against Tim Henman.
All thirty-three seeds received a bye to the second round.