Àlex Corretja defeated Boris Becker in the final, 7–6(7–5), 7–5, 6–3 to win the singles tennis title at the 1998 Swiss Open.
Félix Mantilla was the defending champion, but lost in the quarterfinals to Becker.
This tournament marked the first professional appearance of future 20-time major champion and world No. 1 Roger Federer; he lost in the first round to lucky loser Lucas Arnold Ker.
Seeds Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Draw
Finals
Top half
Bottom half
Qualifying
Qualifying seeds
Qualifiers
Lucky loser Lucas Arnold Ker (replaced Tommy Haas)
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Official results archive (ATP) Official results archive (ITF)