The 1988 Nabisco Grand Prix was the only men's tennis circuit held that year. It incorporated the four grand slam tournaments, three World Championship Tennis tournaments and the Grand Prix tournaments.
The 1994 Peters NSW Open was a combined men's and women's tennis tournament played on outdoor hard courts at the NSW Tennis Centre in Sydney, Australia that was part of the World Series of the 1994 ATP Tour and of Tier II of the 1994 WTA Tour. It was the 102nd edition of the tournament and was held from 10 January through 16 January 1994. Pete Sampras and Kimiko Date won the singles titles.
The 1990 Paris Open was a men's tennis tournament played on indoor carpet courts. It was the 18th edition of the Paris Masters, and was part of the newly formed ATP Championship Series, Single Week of the 1990 ATP Tour. It took place at the Palais omnisports de Paris-Bercy in Paris, France, from 29 October through 5 November 1990.
The 1991 Italian Open was a tennis tournament played on outdoor clay courts. It was the 48th edition of the Italian Open, and was part of the ATP Super 9 of the 1991 ATP Tour, and of the Tier I Series of the 1991 WTA Tour. Both the men's and the women's events were held at the Foro Italico in Rome, Italy. The women's tournament was played from 6 May until 12 May 1991, and the men's tournament was played from 13 May until 20 May 1991. Emilio Sánchez and Gabriela Sabatini won the singles titles.
The 1991 ABN AMRO World Tennis Tournament was a men's tennis tournament played on indoor carpet courts. It was the 19th edition of the event known that year as the ABN AMRO World Tennis Tournament, and was part of the ATP World Series of the 1991 ATP Tour. It took place at the Rotterdam Ahoy indoor sporting arena in Rotterdam, Netherlands, from 25 February through 3 March 1991. Unseeded Omar Camporese won the singles title.
Andre Agassi defeated Stefan Edberg in the final, 6–1, 6–4, 0–6, 6–2 to win the men's singles tennis title at the 1990 Miami Open.
Juan Aguilera defeated Boris Becker in the final, 6–1, 6–0, 7–6(9–7) to win the singles tennis title at the 1990 Hamburg European Open.
The 1989 Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Sydney Entertainment Centre in Sydney, Australia and was part of the 1989 Nabisco Grand Prix. It was the 16th edition of the tournament and was held from 9 October through 15 October 1989. First-seeded Ivan Lendl won the singles title, his third at the event after 1985 and 1987.
The 1989 Stella Artois Championships was a men's tennis tournament played on grass courts at the Queen's Club in London, United Kingdom that was part of the 1989 Nabisco Grand Prix circuit. It was the 87th edition of the tournament and ran from 12 June until 19 June 1989. First-seeded Ivan Lendl won the singles title.
The 1989 Bordeaux Open also known as the Grand Prix Passing Shot was a men's tennis tournament played on clay courts at Villa Primrose in Bordeaux in France that was part of the 1989 Nabisco Grand Prix. It was the 12th edition of the tournament and was held from 25 September until 29 September 1989. First-seeded Ivan Lendl won the singles title.
The 1988 Monte Carlo Open, also known by its sponsored name Volvo Monte Carlo Open, was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France that was part of the 1988 Nabisco Grand Prix. It was the 82nd edition of the tournament and was held from 18 April through 24 April 1989. First-seeded Ivan Lendl, who had been sidelined for eight weeks with a stress fracture in his right foot, won the singles title. It was his second singles title at the event after 1985.
It was the first edition of the Eurocard Classics. Boris Becker won the inaugural singles title, defeating Ivan Lendl 6–2, 6–2 in the final.
The 1992 Torneo Godó was the 40th edition of the Torneo Godó annual men's tennis tournament played on clay courts in Barcelona, Catalonia, Spain and part of the Championship Series of the 1992 ATP Tour. The tournament took place from 6 April through 12 April 1992, and Carlos Costa won the singles title.
The 1988 Ebel German Open was a men's tennis tournament that was part of the 1988 Nabisco Grand Prix circuit. It was the 79th edition of the event and was played on outdoor clay courts at the Am Rothenbaum in Hamburg, West Germany from 25 April until 1 May 1988. Second-seeded Kent Carlsson won the singles title.
The 1991 Volvo Tennis Indoor was a men's tennis tournament played on indoor hard courts that was part of the Championship Series of the 1991 ATP Tour. It was the 21st edition of the tournament and tt took place in Memphis, Tennessee, United States, from February 18 through February 24, 1991. First-seeded Ivan Lendl, who entered on a wildcard, won the singles title and earned $99,000 first-prize money.
The 1987 Sovran Bank D.C. National Tennis Classic was a men's tennis tournament and was played on outdoor hard courts. The surface was changed from clay to hard court in an attempt to attract more top players in preparation for the US Open. It was the 19th edition of the tournament, which was part of the 1987 Grand Prix circuit, and was held at the Rock Creek Stadium in Washington, D.C. from July 27 through August 2, 1987. First-seeded Ivan Lendl won the singles title and earned $39,440 first-prize money.
The 1989 Czechoslovak Open, also known as the Prague Open was a men's tennis tournament played on outdoor clay courts at the I. Czech Lawn Tennis Club in Prague, Czechoslovakia that was part of the 1989 Grand Prix circuit. It was the third edition of the tournament and was held from 7 August until 13 August 1989. Fourth-seeded Marcelo Filippini won the singles title.
The 1990 Philips Austrian Open, also known as the Austrian Open Kitzbühel, was a men's tennis tournament held on outdoor clay courts at the Kitzbüheler Tennisclub in Kitzbühel, Austria that was part of the ATP World Series of the 1990 ATP Tour. It was the 20th edition of the tournament and was held from 30 July until 5 August 1990. Unseeded Horacio de la Peña won the singles title.
Kent Carlsson was the defending champion, but lost in the second round to Goran Ivanišević.
Darren Cahill and Laurie Warder were the defending champions, but Cahill chose to focus on the singles tournament only, losing in the first round. Warder teamed up with Peter Doohan and lost in the quarterfinals to Emilio Sánchez and Javier Sánchez
Ivan Lendl [1] 
Emilio Sánchez / 
