1989 WTA Tier I Series
The table below shows the 1989 WTA Tier I Series schedule.
Singles[edit]
| Tournament | Surface | Week | Winner | Finalist | Semi finalists | Quarter finalists |
|---|---|---|---|---|---|---|
| Key Biscayne | Hard | March 20 |  Gabriela Sabatini 6–1, 4–6, 6–2 |
 Chris Evert
|
 Helena Suková Zina Garrison Jackson
|
 Isabelle Demongeot  Raffaella Reggi-Concato Jana Novotná  Helen Kelesi
|
| Berlin | Clay | May 15 |  Steffi Graf 6–3, 6–1 |
Gabriela Sabatini
|
Isabel Cueto Helen Kelesi
|
Sandra Cecchini  Barbara Paulus Regina Rajchrtová Sylvia Hanika
|