1998 Compaq Grand Slam Cup – Women's singles
# 1998 Compaq Grand Slam Cup – Women's singles

Venus Williams won in the final 6–2, 3–6, 6–2 against Patty Schnyder.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

* Martina Hingis (semifinals)
* Lindsay Davenport (first round)
* Arantxa Sánchez-Vicario (first round)
* Jana Novotná (first round)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| First round | First round | First round | First round | First round | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Martina Hingis | 6 | 7 | | | | | | | | | | | |
| | Conchita Martínez | 2 | 5 | | | | | | | | | | | |
| | Conchita Martínez | 2 | 5 | | 1 | Martina Hingis | 5 | 7 | 5/r | | | | | |
| | | | | | Alt | Patty Schnyder | 7 | 5 | 5 | | | | | |
| 4 | Jana Novotná | 6 | 5 | 5 | Alt | Patty Schnyder | 7 | 5 | 5 | | | | | |
| Alt | Patty Schnyder | 2 | 7 | 7 | | | | | | | | | | |
| Alt | Patty Schnyder | 2 | 7 | 7 | | | | | | Alt | Patty Schnyder | 2 | 6 | 2 |
| | | | | | | | | | | | Venus Williams | 6 | 3 | 6 |
| | Venus Williams | 6 | 6 | | | | | | | | | | | | Venus Williams | 6 | 3 | 6 |
| 3 | Arantxa Sánchez-Vicario | 3 | 2 | | | | | | | | | | | |
| 3 | Arantxa Sánchez-Vicario | 3 | 2 | | | Venus Williams | 6 | 6 | | | | | | |
| | | | | | | Nathalie Tauziat | 4 | 0 | | | | | | |
| | Nathalie Tauziat | 4 | 6 | 7 | | Nathalie Tauziat | 4 | 0 | | | | | | |
| 2 | Lindsay Davenport | 6 | 1 | 5 | | | | | | | | | | |
