# 1998 Copenhagen Open – Singles

The 1998 Copenhagen Open was a men's tennis tournament played on indoor carpet courts in Copenhagen, Denmark that was part of the International Series of the 1998 ATP Tour. It was the eleventh edition of the tournament and was held from 9 March through 15 March 1998.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
* Thomas Johansson (second round)
* Magnus Gustafsson (champion)
* Hicham Arazi (second round)
* Jan Siemerink (semifinals)
* Filip Dewulf (second round)
* Brett Steven (quarterfinals)
* Marc-Kevin Goellner (first round)
* Martin Damm (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 |
| | David Prinosil | 6 | 7 | | | | | | |
| 4 | Jan Siemerink | 3 | 6$^5$ | | | | | | |
| 4 | Jan Siemerink | 3 | 6$^5$ | | | David Prinosil | 6 | 1 | 1 |
| | | | | | 2 | Magnus Gustafsson | 3 | 6 | 6 |
| | Kenneth Carlsen | 4 | 7 | 2 | 2 | Magnus Gustafsson | 3 | 6 | 6 |
| 2 | Magnus Gustafsson | 6 | 5 | 6 | | | | | |

### 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 | T Johansson | 6 | 6 | | | | | | | | | | | | | | |
| | D van Scheppingen | 2 | 2 | | 1 | T Johansson | 6 | 4 | 6 | | | | | | | | |
| | D Prinosil | 7 | 6 | | | D Prinosil | 3 | 6 | 4 | | | | | | | | |
| | C Vinck | 5 | 3 | | | | | | | | D Prinosil | 6 | 6 | | | | |
| | O Delaître | 7 | 4 | 6 | | | | | | | O Delaître | 3 | 3 | | | | |
| | F Fetterlein | 6$^6$ | 6 | 3 | | O Delaître | 0 | 6 | 6 | | | | | | | | |
| | M Sinner | 4 | 7 | 6 | | M Sinner | 6 | 0 | 2 | | | | | | | | |
| 8 | M Damm | 6 | 6$^5$ | 4 | | | | | | | | | | | D Prinosil | 6 | 7 |
| 4 | J Siemerink | 6 | 6 | | | | | | | | | | | 4 | J Siemerink | 3 | 6$^5$ |
| | A Clément | 1 | 3 | | 4 | J Siemerink | 6 | 4 | 6 | | | | | | | | |
| | D Nargiso | 7 | 6 | | | D Nargiso | 4 | 6 | 3 | | | | | | | | |
| | M Tillström | 5 | 4 | | | | | | | 4 | J Siemerink | 6 | 6 | | | | |
| | D Sanguinetti | 7 | 7 | | | | | | | 6 | B Steven | 3 | 3 | | | | |
| | J Van Herck | 6$^4$ | 5 | | | D Sanguinetti | 3 | 1 | | | | | | | | | |
| 6 | B Steven | 6 | 6 | | 6 | B Steven | 6 | 6 | | | | | | | | | |
| | J Knippschild | 4 | 0 | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | F Dewulf | 6 | 6 | | | | | | | | | | | | | | | | |
| | N Kulti | 4 | 4 | | 5 | F Dewulf | 4 | 6$^4$ | | | | | | | | | | | |
| | K Carlsen | 6 | 6 | | | K Carlsen | 6 | 7 | | | | | | | | | | | |
| | J Díaz | 1 | 1 | | | | | | | | K Carlsen | 6 | 3 | 6 | | | | | |
| | G Pozzi | 6 | 6 | | | | | | | | G Pozzi | 3 | 6 | 1 | | | | | |
| | A Boetsch | 4 | 3 | | | G Pozzi | 7 | 6 | | | | | | | | | | | |
| 3 | H Arazi | 6 | 6 | | 3 | H Arazi | 5 | 2 | | | | | | | | | | | |
| | R Vašek | 3 | 3 | | | | | | | | | | | | | K Carlsen | 4 | 7 | 2 |
| | A Pavel | 3 | 6 | 7 | | | | | | | | | | | 2 | M Gustafsson | 6 | 5 | 6 |
| 7 | M-K Goellner | 6 | 3 | 6$^4$ | | A Pavel | 6$^4$ | 6 | 6 | | | | | | | | | | |
| | T Ketola | 7 | 2 | 6 | | T Ketola | 7 | 2 | 1 | | | | | | | | | | |
| | R Schüttler | 5 | 6 | 3 | | | | | | | A Pavel | 3 | 6 | 3 | | | | | |
| | R Furlan | 6 | 3 | 6 | | | | | | 2 | M Gustafsson | 6 | 4 | 6 | | | | | |
| | J Printzlau | 3 | 6 | 3 | | R Furlan | 2 | 2 | | | | | | | | | | | |
| 2 | M Gustafsson | 6 | 7 | | 2 | M Gustafsson | 6 | 6 | | | | | | | | | | | |
| | J Krošlák | 1 | 6$^2$ | | | | | | | | | | | | | | | | |