| Singles | |
|---|---|
| 2004 Grand Prix Hassan II | |
| Champion |  Santiago Ventura |
| Runner-up |  Dominik Hrbatý |
| Final score | 6–3, 1–6, 6–4 |
Julien Boutter was the defending champion, but lost in the second round this year.
Santiago Ventura won the title, defeating Dominik Hrbatý 6–3, 1–6, 6–4 in the final. Notably, this was Ventura's first ATP Tour-level appearance.
Dominik Hrbatý (final)
Antony Dupuis (quarterfinals) Rubén Ramírez Hidalgo (first round) Cyril Saulnier (second round)
Dennis van Scheppingen (first round) Thierry Ascione (quarterfinals) Óscar Hernández (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Dominik Hrbatý | 6 | 6 | ||||||||||
| Julien Benneteau | 2 | 2 | |||||||||||
| 1 | Dominik Hrbatý | 3 | 6 | 4 | |||||||||
| Q | Santiago Ventura | 6 | 1 | 6 | |||||||||
 Christophe Rochus | 1 | 6 | 2 | ||||||||||
| Q | Santiago Ventura | 6 | 1 | 6 | |||||||||
| First round | Second round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 1 | D Hrbatý | 6 | 6 | ||||||||||||||||||||||||
 P Kohlschreiber | 2 | 2 | 1 | D Hrbatý | 5 | 6 | 6 | ||||||||||||||||||||
| G Elseneer | 3 | 6 | 4 | Á Calatrava | 7 | 4 | 4 | ||||||||||||||||||||
| Á Calatrava | 6 | 4 | 6 | 1 | D Hrbatý | 6 | 6 | ||||||||||||||||||||
 J-P Guzmán | 6 | 6 | 8 | Ó Hernández | 3 | 0 | |||||||||||||||||||||
 E Taino | 2 | 1 | J-P Guzmán | 4 | 6 | 63 | |||||||||||||||||||||
| WC | M El Aarej | 4 | 4 | 8 | Ó Hernández | 6 | 1 | 77 | |||||||||||||||||||
| 8 | Ó Hernández | 6 | 6 | 1 | D Hrbatý | 6 | 6 | ||||||||||||||||||||
| 4 | R Ramírez Hidalgo | 4 | 2 | J Benneteau | 2 | 2 | |||||||||||||||||||||
| J Benneteau | 6 | 6 | J Benneteau | 2 | 6 | 6 | |||||||||||||||||||||
| J Boutter | 6 | 3 | 6 | J Boutter | 6 | 3 | 4 | ||||||||||||||||||||
| WC | M Ziadi | 1 | 6 | 1 | J Benneteau | 6 | 6 | ||||||||||||||||||||
| Q |  Z Krajan | 3 | 5 | 7 | T Ascione | 3 | 4 | ||||||||||||||||||||
| F Browne | 6 | 7 | F Browne | 2 | 1r | ||||||||||||||||||||||
| WC | M Tahiri | 3 | 4 | 7 | T Ascione | 6 | 3 | ||||||||||||||||||||
| 7 | T Ascione | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 5 | C Saulnier | 6 | 6 | ||||||||||||||||||||||||
 S Pescosolido | 3 | 2 | 5 | C Saulnier | 0 | 3 | |||||||||||||||||||||
| F Vicente | 5 | 1 | C Rochus | 6 | 6 | ||||||||||||||||||||||
| C Rochus | 7 | 6 | C Rochus | 6 | 6 | ||||||||||||||||||||||
| A Portas | 6 | 7 | 3 | A Dupuis | 3 | 1 | |||||||||||||||||||||
| O Mutis | 2 | 5 | A Portas | 64 | 62 | ||||||||||||||||||||||
| Q | A di Pasquale | 67 | 4 | 3 | A Dupuis | 77 | 77 | ||||||||||||||||||||
| 3 | A Dupuis | 79 | 6 | C Rochus | 1 | 6 | 2 | ||||||||||||||||||||
| 6 | D van Scheppingen | 4 | 2 | Q | S Ventura | 6 | 1 | 6 | |||||||||||||||||||
 I Heuberger | 6 | 6 | I Heuberger | 6 | 6 | ||||||||||||||||||||||
| Q | S Vagnozzi | 79 | 6 | Q | S Vagnozzi | 3 | 4 | ||||||||||||||||||||
 J-R Lisnard | 67 | 1 | I Heuberger | 2 | 4 | ||||||||||||||||||||||
| Q | S Ventura | 6 | 6 | Q | S Ventura | 6 | 6 | ||||||||||||||||||||
 R Sabău | 2 | 3 | Q | S Ventura | 77 | 6 | |||||||||||||||||||||
| N Mahut | 6 | 6 | N Mahut | 65 | 4 | ||||||||||||||||||||||
| LL |  B Rehnquist | 1 | 2 | ||||||||||||||||||||||||
Gustavo Kuerten defeated Magnus Norman in the final, 6–2, 6–3, 2–6, 7–6(8–6) to win the men's singles tennis title at the 2000 French Open. It was his second French Open title.
Defending champion Andre Agassi defeated Arnaud Clément in the final, 6–4, 6–2, 6–2 to win the men's singles tennis title at the 2001 Australian Open.
Magnus Norman was the defending champion of the singles event at the Heineken Open tennis tournament, held in Auckland, New Zealand, but did not compete that year.
Dominik Hrbatý was the defending champion of the singles event at the Heineken Open tennis tournament, held in Auckland, New Zealand, but lost in the first round to Gilles Elseneer.
Greg Rusedski was the defending champion of the singles event of the Heineken Open tennis tournament, held in Auckland, New Zealand, but did not compete that year.
Gustavo Kuerten was the defending champion of the singles event at the Heineken Open tennis tournament, held in Auckland, New Zealand, but lost in the semifinals to Dominik Hrbatý.
Fernando González defeated Olivier Rochus 6–4, 6–2 to win the 2005 Heineken Open singles competition. Dominik Hrbatý was the defending singles champion of the tennis tournament, held in Auckland, New Zealand.
Gastón Gaudio defeated Jarkko Nieminen in the final, 6–2, 6–3 to win the singles title at the 2002 Majorca Open.
Magnus Norman defeated the defending champion Gustavo Kuerten in the final, 6–3, 4–6, 6–4, 6–4 to win the men's singles tennis title at the 2000 Italian Open.
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.
Nikolay Davydenko defeated Dominik Hrbatý in the final, 6–1, 6–2, 6–2 to win the singles tennis title at the 2006 Paris Masters.
Lukáš Rosol was the defending champion; however, he didn't participate this year.
Stéphane Robert won in the final 7–6(5), 7–6(5), against Jiří Vaněk.
Félix Mantilla was the defending champion but lost in the second round against Nicolás Lapentti. In the first round, wildcard entrant Sergi Bruguera defeated Roger Federer 6–1, 6–1. This is Federer's worst loss by number of games won in his entire career.
The event was being held for the first time since 1997. Jim Courier was the last champion.
The 1998 Croatia Open Umag was a tennis tournament played on outdoor clay courts in Umag, Croatia that was part of the International Series of the 1998 ATP Tour. The tournament was held from July 27 through August 2, 1998.
Jonas Björkman and Byron Black were the defending champions, but Black did not compete this year. Björkman teamed up with Max Mirnyi and lost in quarterfinals to Sébastien Lareau and Daniel Nestor.
Justin Gimelstob and Sébastien Lareau were the defending champions, but none competed this year.
Pablo Albano and Luis Lobo were the defending champions, but they didn't compete this year.
Karim Alami was the defending champion, but lost in the quarter-finals to Alberto Berasategui.
Albert Costa was the defending champions, but chose to compete at Cincinnati in the same week.