# 1998 Davidoff Swiss Indoors – Singles

Greg Rusedski was the defending champion, but lost in the second round to David Prinosil.
Tim Henman won the title, defeating Andre Agassi 6–4, 6–3, 3–6, 6–4 in the final.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Pete Sampras (first round)
* Patrick Rafter (first round)
* Petr Korda (first round)
* Andre Agassi (final)
* Yevgeny Kafelnikov (second round)
* Tim Henman (champion)
* Greg Rusedski (second round)
* Jan Siemerink (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final |
| | Marc Rosset | 4 | 2 | | | | | | | |
| 4 | Andre Agassi | 6 | 6 | | | | | | | |
| 4 | Andre Agassi | 6 | 6 | | 4 | Andre Agassi | 4 | 3 | 6 | 4 |
| | | | | | 6 | Tim Henman | 6 | 6 | 3 | 6 |
| 6 | Tim Henman | 6 | 2 | 7$^7$ | 6 | Tim Henman | 6 | 6 | 3 | 6 |
| | Thomas Johansson | 3 | 6 | 6$^5$ | | | | | | |

### Top half

| 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/WC | P Sampras | 6 | 6$^4$ | 3 | | | | | | | | | | | | | |
| | W Ferreira | 4 | 7$^7$ | 6 | | W Ferreira | 4 | 0 | | | | | | | | | |
| | M Rosset | 7$^7$ | 4 | 7$^7$ | | M Rosset | 6 | 6 | | | | | | | | | |
| | T Haas | 6$^3$ | 6 | 6$^4$ | | | | | | | M Rosset | 6 | 7$^7$ | | | | |
| Q | D Prinosil | 7$^9$ | 6 | | | | | | | Q | D Prinosil | 3 | 6$^2$ | | | | |
| Q | P Luxa | 6$^7$ | 4 | | Q | D Prinosil | 7$^7$ | 7 | | | | | | | | | |
| Q | A Pretzsch | 2 | 2 | | 7 | G Rusedski | 6$^4$ | 5 | | | | | | | | | |
| 7 | G Rusedski | 6 | 6 | | | | | | | | | | | | M Rosset | 4 | 2 |
| 4 | A Agassi | 6 | 6 | | | | | | | | | | | 4 | A Agassi | 6 | 6 |
| WC | R Federer | 3 | 2 | | 4 | A Agassi | 6 | 6 | | | | | | | | | |
| | J Golmard | 0 | 6$^3$ | | Q | I Heuberger | 2 | 2 | | | | | | | | | |
| Q | I Heuberger | 6 | 7$^7$ | | | | | | | 4 | A Agassi | 6 | 6 | | | | |
| | M Gustafsson | 6 | 6 | | | | | | | | M Gustafsson | 3 | 3 | | | | |
| | B Ulihrach | 4 | 4 | | | M Gustafsson | 3 | 6 | 7 | | | | | | | | |
| | M Norman | 5 | 3 | | 5 | Y Kafelnikov | 6 | 3 | 5 | | | | | | | | |
| 5 | Y Kafelnikov | 7 | 6 | | | | | | | | | | | | | | |

### Bottom half

| 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 |
| 6 | T Henman | 2 | 6 | 6 | | | | | | | | | | | | | | |
| | J Stoltenberg | 6 | 3 | 4 | 6 | T Henman | 6 | 7$^7$ | | | | | | | | | | |
| | H Arazi | 6 | 6 | | | H Arazi | 4 | 6$^4$ | | | | | | | | | | |
| | R Fromberg | 1 | 4 | | | | | | | 6 | T Henman | 6 | 6 | | | | | |
| LL | J Tarango | 6 | 6 | | | | | | | | N Kiefer | 3 | 4 | | | | | |
| | N Escudé | 3 | 3 | | LL | J Tarango | 6 | 3 | 2 | | | | | | | | | |
| | N Kiefer | 6 | 6 | | | N Kiefer | 4 | 6 | 6 | | | | | | | | | |
| 3 | P Korda | 2 | 4 | | | | | | | | | | | 6 | T Henman | 6 | 2 | 7$^7$ |
| 8 | J Siemerink | 2 | 2 | | | | | | | | | | | | T Johansson | 3 | 6 | 6$^5$ |
| | B Black | 6 | 6 | | | B Black | 7$^7$ | 4 | 5 | | | | | | | | | |
| WC | B Becker | 3 | 2 | | | T Johansson | 6$^3$ | 6 | 7 | | | | | | | | | |
| | T Johansson | 6 | 6 | | | | | | | | T Johansson | 6 | 6 | | | | | |
| LL | M Damm | 3 | 4 | | | | | | | | F Santoro | 3 | 3 | | | | | |
| | F Santoro | 6 | 6 | | | F Santoro | 3 | 6 | 7$^7$ | | | | | | | | | |
| | D Vacek | 7$^9$ | 7 | | | D Vacek | 6 | 3 | 6$^5$ | | | | | | | | | |
| 2 | P Rafter | 6$^7$ | 5 | | | | | | | | | | | | | | | |