1998 Chase Championships – Singles
| Singles | |
|---|---|
| 1998 Chase Championships | |
| Champion |  Martina Hingis |
| Runner-up |  Lindsay Davenport |
| Score | 7–5, 6–4, 4–6, 6–2 |
| Draw | 16 |
| Seeds | 8 |
Martina Hingis defeated Lindsay Davenport in the final, 7–5, 6–4, 4–6, 6–2 to win the singles tennis title at the 1998 Chase Championships.
Jana Novotná was the defending champion, but lost in the first round to Steffi Graf.
This marked the last WTA Championships final to be best-of-five-sets.
Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Lindsay Davenport (final)
Martina Hingis (champion)
Jana Novotná (first round)
Arantxa Sánchez-Vicario (first round)- Monica Seles (quarterfinals)
Mary Pierce (quarterfinals)- Conchita Martínez (first round)
- Nathalie Tauziat (quarterfinals)
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
- NB: The Final was best of 5 sets while all other rounds were best of 3 sets.
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||||
| 1 | Lindsay Davenport
| 4 | 7 | 6 | |||||||||||||||||||||||||
 Sandrine Testud
| 6 | 6 | 0 | 1 | Lindsay Davenport
| 6 | 6 | ||||||||||||||||||||||
 Natasha Zvereva
| 3 | 1 | 8 | Nathalie Tauziat
| 0 | 3 | |||||||||||||||||||||||
| 8 | Nathalie Tauziat
| 6 | 6 | 1 | Lindsay Davenport
| 6 | 2 | 6 | |||||||||||||||||||||
| 3 |  Jana Novotná
| 7 | 4 | 1 |  Steffi Graf
| 1 | 6 | 3 | |||||||||||||||||||||
| Steffi Graf
| 6 | 6 | 6 | Steffi Graf
| 1 | 6 | 6 | ||||||||||||||||||||||
 Anna Kournikova
| 4 | 3 | 5 | Monica Seles
| 6 | 4 | 4 | ||||||||||||||||||||||
| 5 | Monica Seles
| 6 | 6 | 1 | Lindsay Davenport
| 5 | 4 | 6 | 2 | ||||||||||||||||||||
| 7 |  Conchita Martínez
| 6 | 2 | 2 | Martina Hingis
| 7 | 6 | 4 | 6 | ||||||||||||||||||||
 Dominique Van Roost
| 7 | 6 | Dominique Van Roost
| 2 | 3 | ||||||||||||||||||||||||
 Irina Spîrlea
| 7 | 6 | Irina Spîrlea
| 6 | 6 | ||||||||||||||||||||||||
| 4 | Arantxa Sánchez-Vicario
| 6 | 1 | Irina Spîrlea
| 2 | 6 | |||||||||||||||||||||||
| 6 | Mary Pierce
| 6 | 6 | 2 | Martina Hingis
| 6 | 7 | ||||||||||||||||||||||
 Amanda Coetzer
| 1 | 0 | 6 | Mary Pierce
| 6 | 4 | |||||||||||||||||||||||
| Patty Schnyder
| 6 | 0 | 3 | 2 | Martina Hingis
| 7 | 6 | ||||||||||||||||||||||
| 2 | Martina Hingis
| 4 | 6 | 6 | |||||||||||||||||||||||||