2004 WTA Tier I Series Singles Singles

| Tournament | Surface | Week | Winner | Finalist | Semifinalists |
|---|---|---|---|---|---|
| San Diego | Hard | July 26 | Lindsay Davenport 6–1, 6–1 | Anastasia Myskina | Vera Zvonareva Elena Dementieva |
| Montréal | Hard | August 2 | Amélie Mauresmo 6–1, 6–0 | Elena Likhovtseva | Anastasia Myskina Vera Zvonareva |
| Moscow | Carpet (i) | October 11 | Anastasia Myskina 7–5, 6–0 | Elena Dementieva | Elena Bovina Lindsay Davenport |
| Zurich | Carpet (i) | October 18 | Alicia Molik 4–6, 6–2, 6–3 | Maria Sharapova | Patty Schnyder Elena Dementieva |