| Singles | |
|---|---|
| 1998 Grand Prix Hassan II | |
| Champion |  Andrea Gaudenzi |
| Runner-up |  Álex Calatrava |
| Final score | 6–4, 5–7, 6–4 |
| Draw | 32 |
| Seeds | 8 |
Hicham Arazi was the defending champion, but lost in the quarterfinals this year.
Andrea Gaudenzi won the title, defeating Álex Calatrava 6–4, 5–7, 6–4 in the final.
Albert Portas (quarterfinals)
Hicham Arazi (quarterfinals) Karim Alami (semifinals) Andrea Gaudenzi (champion)
Sjeng Schalken (second round, withdrew)
Juan Antonio Marín (quarterfinals) Jordi Burillo (second round) Davide Sanguinetti (second round)| Semifinals | Final | ||||||||||||
| Álex Calatrava | 6 | 62 | 78 | ||||||||||
| 3 | Karim Alami | 3 | 77 | 66 | |||||||||
| Álex Calatrava | 4 | 7 | 4 | ||||||||||
| 4 | Andrea Gaudenzi | 6 | 5 | 6 | |||||||||
| 4 | Andrea Gaudenzi | 6 | 6 | ||||||||||
| Q |  Sébastien Grosjean | 4 | 4 | ||||||||||
| First round | Second round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 1 | A Portas | 6 | 6 | ||||||||||||||||||||||||
 G Schaller | 1 | 4 | 1 | A Portas | 6 | 6 | |||||||||||||||||||||
 R Schüttler | 3 | 2 | Q |  A Sávolt | 3 | 4 | |||||||||||||||||||||
| Q | A Sávolt | 6 | 6 | 1 | A Portas | 2 | 4 | ||||||||||||||||||||
 F Squillari | 3 | 3 | Á Calatrava | 6 | 6 | ||||||||||||||||||||||
| Á Calatrava | 6 | 6 | Á Calatrava | 6 | 6 | ||||||||||||||||||||||
| WC | M Tahiri | 5 | 1 | 8 | D Sanguinetti | 1 | 1 | ||||||||||||||||||||
| 8 | D Sanguinetti | 7 | 6 | Á Calatrava | 6 | 62 | 78 | ||||||||||||||||||||
| 3 | K Alami | 6 | 6 | 3 | K Alami | 3 | 77 | 66 | |||||||||||||||||||
| M Craca | 3 | 2 | 3 | K Alami | 4 | 6 | 6 | ||||||||||||||||||||
| M Martelli | 4 | 4 |  C Ruud | 6 | 4 | 4 | |||||||||||||||||||||
| C Ruud | 6 | 6 | 3 | K Alami | 3 | 77 | 7 | ||||||||||||||||||||
| F Vicente | 1 | 6 | 6 | F Vicente | 6 | 65 | 5 | ||||||||||||||||||||
| J van Lottum | 6 | 3 | 0 | F Vicente | w/o | ||||||||||||||||||||||
| Á López Morón | 2 | 5 | 5 | S Schalken | |||||||||||||||||||||||
| 5 | S Schalken | 6 | 7 | ||||||||||||||||||||||||
| First round | Second round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 6 | J A Marín | 4 | 6 | 6 | |||||||||||||||||||||||
| R Furlan | 6 | 4 | 0 | 6 | J A Marín | 6 | 6 | ||||||||||||||||||||
| Q | C Auffray | 3 | 6 | 6 | Q | C Auffray | 4 | 2 | |||||||||||||||||||
| J Knippschild | 6 | 3 | 0 | 6 | J A Marín | 77 | 5 | 2 | |||||||||||||||||||
| WC | A Boetsch | 3 | 6 | 3 | 4 | A Gaudenzi | 64 | 7 | 6 | ||||||||||||||||||
| Q | A di Pasquale | 6 | 4 | 6 | Q | A di Pasquale | 2 | 3 | |||||||||||||||||||
 A Pavel | 77 | 5 | 3 | 4 | A Gaudenzi | 6 | 6 | ||||||||||||||||||||
| 4 | A Gaudenzi | 62 | 7 | 6 | 4 | A Gaudenzi | 6 | 6 | |||||||||||||||||||
| 7 | J Burillo | 6 | 6 | Q | S Grosjean | 4 | 4 | ||||||||||||||||||||
| A Martín | 2 | 4 | 7 | J Burillo | 62 | 5 | |||||||||||||||||||||
| M Sinner | 64 | 3 | Q | S Grosjean | 77 | 7 | |||||||||||||||||||||
| Q | S Grosjean | 77 | 6 | Q | S Grosjean | 7 | 2 | 6 | |||||||||||||||||||
| J Díaz | 6 | 6 | 2 | H Arazi | 5 | 6 | 3 | ||||||||||||||||||||
| WC | M El Aarej | 1 | 4 | J Díaz | 5 | 2 | |||||||||||||||||||||
| H Gumy | 3 | 6 | 1 | 2 | H Arazi | 7 | 6 | ||||||||||||||||||||
| 2 | H Arazi | 6 | 0 | 6 | |||||||||||||||||||||||
Tommy Haas was the defending champion but did not compete that year.
Yevgeny Kafelnikov was the defending champion but lost in the semifinals to Thomas Enqvist.
Gustavo Kuerten was the defending champion but did not compete that year.
Franco Squillari was the defending champion but lost in the quarterfinals to Bohdan Ulihrach.
Tomás Carbonell was the defending champion but lost in the quarterfinals to Gilbert Schaller.
Alberto Martín was the defending champion, but lost in the first round.
Gustavo Kuerten defeated Hicham Arazi in the final, 6–3, 6–2, 6–4 to win the singles tennis title at the 2001 Monte Carlo Masters.
Francisco Clavet was the defending champion, but the eighth seeded Spaniard lost in the quarterfinals to Carlos Moyá. Sláva Doseděl won in the final 7–6(7–4), 7–6(7–5), 6–7(4–7), 6–2 against number one seed Carlos Moyà and captured his third and last title of his professional career.
Roger Federer was the defending champion but lost in the final 7–6(7–2), 4–6, 6–1 against Davide Sanguinetti.
Patrick Rafter was the defending champion but lost in the first round to Peter Wessels.
Franco Squillari was the defending champion but lost in the third round to Guillermo Cañas.
Juan Carlos Ferrero was the defending champion but lost in the third round to Alberto Martín.
Nicolás Lapentti was the defending champion but lost in the third round to Mariano Zabaleta.
Thomas Muster was the defending champion but lost in the quarterfinals to Andrea Gaudenzi.
Greg Rusedski was the defending champion, but lost in the quarterfinals this year.
Richard Krajicek was the defending champion but did not participate.
Jérôme Golmard was the defending champion, but lost in the quarterfinals to Nicolas Kiefer.
The 1998 Generali Open was a men's tennis tournament played on Clay in Kitzbühel, Austria that was part of the International Series of the 1998 ATP Tour. It was the forty-third edition of the tournament and was held from 27 July – 2 August 1998.
Alberto Berasategui was the defending champion, but lost in quarterfinals to tournament runner-up Gustavo Kuerten.
Francisco Clavet was the defending champion, but lost in the first round to Alberto Berasategui.