Glenn Michibata is a former professional tennis player and former head coach of the Princeton University Tigers tennis team.
The 1990 IBM ATP Tour was the first season of the ATP Tour, the newly formed tennis circuit which came in to replace the Grand Prix and WCT tournaments. It was the elite tour for professional tennis organized by the Association of Tennis Professionals. In 1990 the IBM ATP Tour included the four Grand Slam tournaments, the ATP Tour World Championships, the ATP Championship Series, Single-Week, the ATP Championship Series and the ATP World Series. The World Team Cup, Davis Cup and Grand Slam Cup are included in this calendar but did not count towards the Tour.
The 1993 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts. It was the 87th edition of the Monte Carlo Open, and was part of the ATP Championship Series, Single-Week of the 1993 ATP Tour. It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 19 April through 25 April 1993.
The 1991 Australian Men's Hardcourt Championships was a men's tennis tournament played on indoor hard courts in Adelaide, Australia and was part of the ATP World Series of the 1991 ATP Tour. It was the 14th edition of the tournament and was held from 31 December 1990 to 7 January 1991. Unseeded Nicklas Kulti won the singles title.
The 1992 ABN AMRO World Tennis Tournament was a men's tennis tournament played on indoor carpet courts. It was the 20th edition of the event known that year as the ABN AMRO World Tennis Tournament, and was part of the ATP World Series of the 1992 ATP Tour. It took place at the Rotterdam Ahoy indoor sporting arena in Rotterdam, Netherlands, from 24 February through 1 March 1992. Boris Becker won the singles title.
Patrick Galbraith and Anders Järryd were the defending champions, but Galbraith chose not to participate, and only Jarryd competed that year.
Jarryd partnered with John Fitzgerald, but lost in the first round to Marc-Kevin Goellner and David Prinosil.
The 1991 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts. It was the 85th edition of the Monte Carlo Open, and was part of the ATP Championship Series, Single-Week of the 1991 ATP Tour. It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 22 April through 28 April 1991.
The 1990 Casablanca Open was a tennis tournament played on outdoor clay courts in Casablanca, Morocco and was part of the ATP International Series of the 1990 ATP Tour. It was the 7th edition of the tournament and was held from March 5 to March 12.
The 1993 German Open was a men's tennis tournament played on outdoor clay courts. It was the 87th Hamburg Masters, and was part of the ATP Championship Series, Single Week category of the 1993 ATP Tour. It took place at the Rothenbaum Tennis Center in Hamburg, Germany, from 3 May through 10 May 1993. Sixth-seeded Michael Stich won the singles title.
The 1990 ATP Athens Open was a men's tennis tournament played on outdoor clay courts in Athens in Greece that was part of the World Series of the 1990 ATP Tour. It was held from 1 October through 7 October 1990. Seventh-seeded Mark Koevermans won the singles title.
The 1991 Athens Open was a men's tennis tournament played on outdoor clay courts in Athens, Greece that was part of the World Series of the 1991 ATP Tour. It was the sixth edition of the tournament and was held from 30 September until 7 October 1991. First-seeded Sergi Bruguera won the singles title.
The 1992 Saab International, also known as the Athens Open', was a men's tennis tournament played on outdoor clay courts in Athens, Greece that was part of the World Series of the 1992 ATP Tour. It was the seventh edition of the tournament and was played from 5 October until 12 October 1992. Third-seeded Jordi Arrese won the singles title.
The 1992 Tel Aviv Open was a men's tennis tournament played on hard courts that was part of the World Series of the 1992 ATP Tour. It was the 13th edition of the tournament and was played at the Israel Tennis Centers in the Tel Aviv District city of Ramat HaSharon, Israel from October 12 through October 19, 1992. Jeff Tarango won the singles title.
The 1991 Estoril Open was a tennis tournament played on outdoor clay courts. This event was the 2nd edition of the Estoril Open, included in the 1991 ATP Tour World Series. The event took place at the Estoril Court Central, in Oeiras, Portugal, from April 1 through April 8, 1991.
The 1992 Dutch Open was an ATP men's tennis tournament staged in Hilversum, Netherlands that was part of the World Series of the 1992 ATP Tour. It was the 35th edition of the tournament and was held from 20 July until 26 July 1992. Czechoslovakia's Karel Nováček, who was seeded third, won his first individual title of the year, and eighth of his career.
The 1990 Dutch Open was an ATP men's tennis tournament staged in Hilversum, Netherlands. It was the 33rd edition of the tournament and was held from 23 July until 29 July 1990. Spain's Francisco Clavet won his first individual title of the year, and first of his career. Unseeded Francisco Clavet won the singles title.
The 1989 Dutch Open was a men's Grand Prix tennis tournament staged at 't Melkhuisje in Hilversum, Netherlands and played on outdoor clay courts. It was the 32nd edition of the tournament was held from 24 July to 30 July 1989. Eighth-seeded Karel Nováček won the singles title.
Andres Võsand is a former professional tennis player from Estonia. He represented the Soviet Union for most of his career, but was based in West Germany, then in 1995 took up German citizenship.
Nicolas Kischkewitz is a French former professional tennis player.
Sergio Casal and Emilio Sánchez were the two-time defending champions, but lost to Paul Haarhuis and Mark Koevermans in the semifinals.
Netherlands 
