# 1998 Bank of the West Classic – Singles

Martina Hingis was the defending champion but did not compete that year.
Lindsay Davenport won in the final 6–4, 5–7, 6–4 against Venus Williams.

## 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 (champion)
* Monica Seles (semifinals)
* Venus Williams (final)
* Steffi Graf (semifinals)
* Natasha Zvereva (quarterfinals)
* Joannette Kruger (second round)
* Elena Likhovtseva (quarterfinals)
* Rita Grande (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 |
| 1 | Lindsay Davenport | 6 | 5 | 6 |
| 3 | Venus Williams | 4 | 7 | 4 |

### 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 | Semifinals |
| | | | | | 1 | L Davenport | 6 | 6 | | | | | | | | | | |
| | K Po | 7 | 6 | | | K Po | 1 | 3 | | | | | | | | | | |
| | N Pratt | 5 | 0 | | | | | | | 1 | L Davenport | 7 | 6 | | | | | |
| | Y Yoshida | 0 | 3 | | | | | | | | T Tanasugarn | 6 | 1 | | | | | |
| | T Tanasugarn | 6 | 6 | | | T Tanasugarn | 6 | 6 | | | | | | | | | | |
| Q | A Stevenson | 6 | 7 | | Q | A Stevenson | 2 | 0 | | | | | | | | | | |
| 8 | R Grande | 1 | 5 | | | | | | | | | | | 1 | L Davenport | 6 | 6 | 6 |
| | | | | | | | | | | | | | | 4 | S Graf | 4 | 7 | 3 |
| | | | | | 4 | S Graf | 6 | 6 | | | | | | | | | | |
| | M J Fernández | 6 | 6 | | | M J Fernández | 4 | 0 | | | | | | | | | | |
| | C Rubin | 4 | 4 | | | | | | | 4 | S Graf | 6 | 6 | | | | | |
| Q | E Tatarkova | 7 | 2 | 7 | | | | | | 5 | N Zvereva | 1 | 3 | | | | | |
| | S Cacic | 6 | 6 | 5 | Q | E Tatarkova | 6 | 4 | 2 | | | | | | | | | |
| | T Snyder | 2 | 4 | | 5 | N Zvereva | 0 | 6 | 6 | | | | | | | | | |
| 5 | N Zvereva | 6 | 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 |
| 7 | E Likhovtseva | 6 | 4 | 6 | | | | | | | | | | | | | |
| WC | M Irvin | 1 | 6 | 0 | 7 | E Likhovtseva | 6 | 6 | | | | | | | | | |
| | A Frazier | 3 | 6 | 6 | | A Frazier | 1 | 4 | | | | | | | | | |
| Q | J Lee | 6 | 2 | 3 | | | | | | 7 | E Likhovtseva | 2 | 4 | | | | |
| | C Morariu | 6 | 3 | 6 | | | | | | 3 | V Williams | 6 | 6 | | | | |
| Q | J Capriati | 4 | 6 | 4 | | C Morariu | 6 | 1 | 0 | | | | | | | | |
| | | | | | 3 | V Williams | 4 | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | | | 3 | V Williams | 6 | 6 |
| 6 | J Kruger | 1 | 6 | 6 | | | | | | | | | | 2 | M Seles | 3 | 4 |
| WC | L Osterloh | 6 | 2 | 4 | 6 | J Kruger | 3 | 6 | | | | | | | | | |
| | M Saeki | 6 | 6 | 3 | | A-G Sidot | 6 | 7 | | | | | | | | | |
| | A-G Sidot | 7 | 2 | 6 | | | | | | | A-G Sidot | 3 | 1 | | | | |
| | N Dechy | 6 | 4 | 3 | | | | | | 2 | M Seles | 6 | 6 | | | | |
| | F Li | 4 | 6 | 6 | | F Li | 6 | 3 | 1 | | | | | | | | |
| | | | | | 2 | M Seles | 2 | 6 | 6 | | | | | | | | |