The 1998 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt in Germany that was part of Tier II of the 1998 WTA Tour. It was the 21st edition of the tournament and was held from 5 October until 11 October 1998. Unseeded Sandrine Testud won the singles title and earned $79,000 first-prize money.[1]
See main article: 1998 Porsche Tennis Grand Prix – Singles. 
Sandrine Testud defeated 
Lindsay Davenport 7–5, 6–3
See main article: 1998 Porsche Tennis Grand Prix – Doubles. Lindsay Davenport / 
Natasha Zvereva defeated 
Anna Kournikova / 
Arantxa Sánchez-Vicario 6–4, 6–2
| Event | W | F | SF | QF | Round of 16 | Round of 32 | ||
| style=background:#efefef | Singles | $79,000 | $36,000 | $17,850 | $9,400 | $4,950 | $2,600 |
|---|