| Singles | |
|---|---|
| 1998 Copenhagen Open | |
| Champion |  Magnus Gustafsson [1] |
| Runner-up |  David Prinosil |
| Final score | 3–6, 6–1, 6–1 |
| Draw | 32 |
| Seeds | 8 |
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.
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)| Semifinals | Final [1] | ||||||||||||
| David Prinosil | 6 | 7 | |||||||||||
| 4 | Jan Siemerink | 3 | 65 | ||||||||||
| David Prinosil | 6 | 1 | 1 | ||||||||||
| 2 | Magnus Gustafsson | 3 | 6 | 6 | |||||||||
 Kenneth Carlsen | 4 | 7 | 2 | ||||||||||
| 2 | Magnus Gustafsson | 6 | 5 | 6 | |||||||||
| First round | Second round | Quarterfinals | 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 | 66 | 6 | 3 | O Delaître | 0 | 6 | 6 | ||||||||||||||||||||
| M Sinner | 4 | 7 | 6 | M Sinner | 6 | 0 | 2 | ||||||||||||||||||||
| 8 | M Damm | 6 | 65 | 4 | D Prinosil | 6 | 7 | ||||||||||||||||||||
| 4 | J Siemerink | 6 | 6 | 4 | J Siemerink | 3 | 65 | ||||||||||||||||||||
| 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 | 64 | 5 | D Sanguinetti | 3 | 1 | ||||||||||||||||||||||
| 6 | B Steven | 6 | 6 | 6 | B Steven | 6 | 6 | ||||||||||||||||||||
| J Knippschild | 4 | 0 | |||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | F Dewulf | 6 | 6 | ||||||||||||||||||||||||
| N Kulti | 4 | 4 | 5 | F Dewulf | 4 | 64 | |||||||||||||||||||||
| 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 | 64 | A Pavel | 64 | 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 | 62 | |||||||||||||||||||||||||
The 1998 European Community Championships was a men's tennis tournament played on hard courts in Antwerp, Belgium, that was part of the Championship Series of the 1998 ATP Tour. It was the sixteenth edition of the tournament and was held 16–22 February 1998.
The 1998 Guardian Direct Cup was a men's tennis tournament played on indoor carpet courts in London, Great Britain, that was part of the International Series Gold of the 1998 ATP Tour. It was the 21st edition of the tournament and was held 23 February – 1 March.
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.
The 1998 Salem Open was a men's tennis tournament played on Hard courts in Hong Kong that was part of the International Series of the 1998 ATP Tour. It was the 23rd edition of the tournament and was held from 6–12 April 1998.
The 1998 AT&T Challenge was a men's tennis tournament played on Clay in Atlanta, Georgia, United States that was part of the International Series of the 1998 ATP Tour. It was the thirteenth edition of the tournament and was held from 27 April – 3 May 1998.
The 1998 International Raiffeisen Grand Prix was a men's tennis tournament played on Clay in St. Pölten, Austria that was part of the International Series of the 1998 ATP Tour. It was the eighteenth edition of the tournament and was held from 18–24 May 1998.
The 1998 Hall of Fame Tennis Championships was a tennis tournament played on grass courts at the International Tennis Hall of Fame in Newport, Rhode Island in the United States and was part of the World Series of the 1998 ATP Tour. It was the 23rd edition of the tournament and was held from July 6 through July 12, 1998.
The 1998 Swedish Open was a men's tennis tournament played on Clay in Båstad, Sweden that was part of the International Series of the 1998 ATP Tour. It was the fifty-first edition of the tournament and was held from 6–12 July 1998.
The 1998 Mercedes-Benz Cup was a men's tennis tournament played on hardcourt in Los Angeles, United States that was part of the International Series of the 1998 ATP Tour. It was the seventy-first edition of the tournament and was held from July 27 through August 2, 1998.
The 1998 Waldbaum's Hamlet Cup was a men's tennis tournament played on Hard courts in Long Island, United that was part of the International Series of the 1998 ATP Tour. It was the eighteenth edition of the tournament and was held from 24 to 30 August 1998.
The 1998 President's Cup was a men's tennis tournament played on Hard in Tashkent, Uzbekistan that was part of the International Series of the 1998 ATP Tour. It was the second edition of the tournament and was held from 14 September – 20 September.
The 1998 Romanian Open was a men's tennis tournament played on Clay in Bucharest, Romania that was part of the World Series of the 1998 ATP Tour. It was the sixth edition of the tournament and was held from 14 September – 21 September.
The 1998 Grand Prix de Tennis de Toulouse was a men's tennis tournament played on indoor hard in Toulouse, France that was part of the International Series of the 1998 ATP Tour. It was the seventeenth edition of the tournament and was held from 28 September – 4 October.
The 1998 Campionati Internazionali di Sicilia was a men's tennis tournament played on Clay in Palermo, Italy that was part of the International Series of the 1998 ATP Tour. It was the seventeenth edition of the tournament and was held from 5 October – 11 October.
The 1998 Singapore Open was a men's tennis tournament played on Indoor Hard in Singapore, Singapore that was part of the Championship Series of the 1998 ATP Tour. It was the seventh edition of the tournament and was held from 12 October – 18 October.
The 1998 IPB Czech Indoor was a men's tennis tournament played on indoor carpet in Ostrava, Czech Republic that was part of the International Series of the 1998 ATP Tour. It was the fifth edition of the tournament and was held from 19 October – 25 October.
The 1998 Abierto Mexicano Telcel was a men's tennis tournament played on Clay in Mexico City, Mexico that was part of the International Series of the 1998 ATP Tour. It was the sixth edition of the tournament and was held from 26 October – 1 November.
The 1998 Cerveza Club Colombia Open was a men's tennis tournament played on Clay in Bogotá, Colombia that was part of the International Series of the 1998 ATP Tour. It was the fifth edition of the tournament and was held from 2 November – 8 November.
The 1999 Croatian Indoors was a men's tennis tournament played on indoor carpet courts in Copenhagen, Denmark, that was part of the International Series of the 1999 ATP Tour. It was the twelfth edition of the tournament and was held from 2 February until 9 February 1998.
The 1999 Croatian Indoors was a men's tennis tournament played on carpet courts in Copenhagen, Denmark, that was part of the International Series of the 1999 ATP Tour. It was the twelfth edition of the tournament and was held from 2 February until 9 February 1998.