# 1998 Grand Prix Hassan II – Singles

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.

## Seeds

* 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)

## 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 |
| | Álex Calatrava | 6 | 6$^2$ | 7$^8$ | | | | | |
| 3 | Karim Alami | 3 | 7$^7$ | 6$^6$ | | | | | |
| 3 | Karim Alami | 3 | 7$^7$ | 6$^6$ | | Álex Calatrava | 4 | 7 | 4 |
| | | | | | 4 | Andrea Gaudenzi | 6 | 5 | 6 |
| 4 | Andrea Gaudenzi | 6 | 6 | | 4 | Andrea Gaudenzi | 6 | 5 | 6 |
| Q | Sébastien Grosjean | 4 | 4 | | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Semi-finals | Semi-finals | Semi-finals | Semi-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 | 6$^2$ | 7$^8$ |
| 3 | K Alami | 6 | 6 | | | | | | | | | | | | 3 | K Alami | 3 | 7$^7$ | 6$^6$ |
| | 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 | 7$^7$ | 7 | | | | | |
| | F Vicente | 1 | 6 | 6 | | | | | | | F Vicente | 6 | 6$^5$ | 5 | | | | | |
| | J van Lottum | 6 | 3 | 0 | | F Vicente | w/o | | | | | | | | | | | | |
| | Á López Morón | 2 | 5 | | 5 | S Schalken | | | | | | | | | | | | | |
| 5 | S Schalken | 6 | 7 | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Quarter-finals | Semi-finals | Semi-finals | Semi-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 | 7$^7$ | 5 | 2 | | | | |
| WC | A Boetsch | 3 | 6 | 3 | | | | | 4 | A Gaudenzi | 6$^4$ | 7 | 6 | | | | |
| Q | A di Pasquale | 6 | 4 | 6 | Q | A di Pasquale | 2 | 3 | | | | | | | | | |
| | A Pavel | 7$^7$ | 5 | 3 | 4 | A Gaudenzi | 6 | 6 | | | | | | | | | |
| 4 | A Gaudenzi | 6$^2$ | 7 | 6 | | | | | | | | | | 4 | A Gaudenzi | 6 | 6 |
| 7 | J Burillo | 6 | 6 | | | | | | | | | | | Q | S Grosjean | 4 | 4 |
| | A Martín | 2 | 4 | | 7 | J Burillo | 6$^2$ | 5 | | | | | | | | | |
| | M Sinner | 6$^4$ | 3 | | Q | S Grosjean | 7$^7$ | 7 | | | | | | | | | |
| Q | S Grosjean | 7$^7$ | 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 | | | | | | | | | | | | | |