First-seeded Marcelo Ríos defeated Richard Fromberg 4–6, 6–4, 7–6(7–3) to win the 1998 Heineken Open singles competition. Jonas Björkman was the champion but did not defend his title.
The 1989 Stella Artois professional tennis tournament was part of the ATP World Tour and was held in Milan, Italy. Boris Becker and Eric Jelen were the defending champions but only Jelen competed in 1989 with Wally Masur. Jelen and Masur lost in the first round to Paolo Canè and Michael Mortensen.
Michaël Llodra and Diego Nargiso were the defending champions but only Llodra competed that year with Eyal Ran.
Jiří Novák and David Rikl were the defending champions but lost in the quarterfinals to Tomás Carbonell and Nicolás Lapentti.
Jiří Novák and David Rikl were the defending champions but lost in the second round to Tomás Carbonell and Nicolás Lapentti.
Pablo Albano and Cyril Suk were the defending champions but they competed with different partners that year, Albano with Lucas Arnold and Suk with Marius Barnard.
Marius Barnard and Jim Thomas were the defending champions at the doubles event of the Heineken Open tennis tournament, held in Auckland, New Zealand, but only Barnard competed that year with David Adams.
Michael Hill and Jeff Tarango were the defending champions but they competed with different partners that year, Hill with Daniel Vacek and Tarango with David Adams.
Guillermo Cañas and Rainer Schüttler were the defending champions but they competed with different partners that year, Cañas with Younes El Aynaoui and Schüttler with Mikhail Youzhny.
Mark Keil and Jeff Tarango were the defending champions but only Tarango competed that year with David Ekerot.
Rennae Stubbs and Jared Palmer defeated 1993 champions Arantxa Sánchez Vicario and Todd Woodbridge in the final, 7–5, 7–6(7–3), to win the mixed doubles tennis title at the 2000 Australian Open. By winning the title, Stubbs won her second Grand Slam title, after she won her first in Women's Doubles earlier in the week, and Palmer won his first major Mixed Doubles title. Mariaan de Swardt and David Adams were the defending champions, but De Swardt chose not to defend her title and Adams played with Kristie Boogert. Adams and Boogert lost to Sánchez Vicario and Woodbridge in the semifinals.
The 2000 French Open was a tennis tournament that took place on the outdoor clay courts at the Stade Roland Garros in Paris, France. The tournament was held from 29 May until 11 June. It was the 99th staging of the French Open, and the second Grand Slam tennis event of 2000.
The 2001 French Open was the second Grand Slam event of 2001 and the 100th edition of the French Open. It took place at the Stade Roland Garros in Paris, France, from late May through early June, 2001.
Jacco Eltingh and Paul Haarhuis were the defending champions. Eltingh chose not to participate. Haarhuis teamed up with Jared Palmer, but they lost in the first round to Andrea Gaudenzi and Diego Nargiso.
The defending champions were Scott Davis and David Pate, but they were defeated by Diego Nargiso and Stefano Pescosolido in the first round. Second-seeded pair Rick Leach and Jim Pugh won in the final against Bret Garnett and Greg Van Emburgh.
2000 Axa Cup, Tim Henman and Greg Rusedski were the defending champions, only Henman competed but lost in the quarterfinals.
David Adams and Jeff Tarango were the defending champions, but lost in first round to Pablo Albano and Sebastián Prieto.
Grant Connell and Patrick Galbraith were the defending champions, but lost in the second round to Mark Draper and Scott Draper.
Magnus Gustafsson and Magnus Larsson were the defending champions, but they did not participate this year.
Juan Garat and Roberto Saad were the defending champions, but Garat did not compete this year. Saad teamed up with Patricio Arnold and lost in the quarterfinals to David Adams and Andrei Olhovskiy.
Michael Hill 
Jeff Tarango 
