# 1998 Pilot Pen International – Women's singles

Lindsay Davenport was the defending champion but lost in the semifinals to Steffi Graf.
Graf won in the final 6–4, 6–1 against Jana Novotná.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top four seeds received a bye to the second round.
* Lindsay Davenport (semifinals)
* Jana Novotná (final)
* Arantxa Sánchez-Vicario (second round)
* Steffi Graf (champion)
* Nathalie Tauziat (first round)
* Patty Schnyder (second round)
* Amanda Coetzer (quarterfinals)
* Dominique Van Roost (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

### Final

| Final | Final | Final | Final | Final |
| WC/4 | Steffi Graf | 6 | 6 | |
| 2 | Jana Novotná | 4 | 1 | |

### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | L Davenport | w/o | | | | | | | | | | |
| Q | A Miller | 2 | 6 | 2 | Q | V Ruano Pascual | | | | | | | | | | | |
| Q | V Ruano Pascual | 6 | 3 | 6 | | | | | | 1 | L Davenport | 6 | 6 | | | | |
| | S Farina | 2 | 3 | | | | | | | | A Huber | 3 | 3 | | | | |
| | A Huber | 6 | 6 | | | A Huber | 7 | 7 | | | | | | | | | |
| Q | R Grande | 4 | 3 | | 6 | P Schnyder | 5 | 6 | | | | | | | | | |
| 6 | P Schnyder | 6 | 6 | | | | | | | | | | | 1 | L Davenport | 3 | 6 |
| | | | | | | | | | | | | | | WC/4 | S Graf | 6 | 7 |
| | | | | | WC/4 | S Graf | 6 | 6 | | | | | | | | | |
| | H Nagyová | 6 | 6 | | | H Nagyová | 1 | 3 | | | | | | | | | |
| | M Vento | 3 | 2 | | | | | | | WC/4 | S Graf | 6 | 6 | | | | |
| | B Schett | 3 | 2 | | | | | | | 7 | A Coetzer | 3 | 0 | | | | |
| | A Kournikova | 6 | 6 | | | A Kournikova | 6 | 4 | 5 | | | | | | | | |
| | M Serna | 6 | 3 | | 7 | A Coetzer | 1 | 6 | 7 | | | | | | | | |
| 7 | A Coetzer | 7 | 6 | | | | | | | | | | | | | | |

### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | D Van Roost | 6 | 0 | 1 | | | | | | | | | | | | | |
| WC | M J Fernández | 3 | 6 | 6 | WC | M J Fernández | 6 | 4 | 6 | | | | | | | | |
| | S Testud | 6 | 6 | | | S Testud | 3 | 6 | 4 | | | | | | | | |
| | R Dragomir | 4 | 1 | | | | | | | WC | M J Fernández | 5 | 1 | | | | |
| | N Sawamatsu | 6 | 3 | 5 | | | | | | | J Halard-Decugis | 7 | 6 | | | | |
| | J Halard-Decugis | 3 | 6 | 7 | | J Halard-Decugis | 7 | 6 | | | | | | | | | |
| | | | | | 3 | A Sánchez-Vicario | 6 | 2 | | | | | | | | | |
| | | | | | | | | | | | | | | | J Halard-Decugis | 4 | 4 |
| 5 | N Tauziat | 6 | 0 | | | | | | | | | | | 2 | J Novotná | 6 | 6 |
| | A Mauresmo | 7 | 6 | | | A Mauresmo | 6 | 6 | | | | | | | | | |
| | J Kruger | 4 | 6 | 6 | Q | A Dechaume-Balleret | 4 | 1 | | | | | | | | | |
| Q | A Dechaume-Balleret | 6 | 3 | 7 | | | | | | | A Mauresmo | 1 | 6 | | | | |
| WC | C Rubin | 3 | 6 | 6 | | | | | | 2 | J Novotná | 6 | 7 | | | | |
| | E Likhovtseva | 6 | 3 | 1 | WC | C Rubin | 1 | 5 | | | | | | | | | |
| | | | | | 2 | J Novotná | 6 | 7 | | | | | | | | | |