| Singles | |
|---|---|
| 1990 Norstar Bank Hamlet Challenge Cup | |
| Champion |  Stefan Edberg |
| Runner-up |  Goran Ivanišević |
| Final score | 7–6(7–3), 6–3 |
| Draw | 28 |
| Seeds | 8 |
Ivan Lendl was the defending champion (the previous year was an exhibition), but chose not to participate that year.
Stefan Edberg won in the final 7–6(7–3), 6–3, against Goran Ivanišević.
The top four seeds receive a bye into the second round.
Stefan Edberg (champion)
Andrés Gómez (quarterfinals)
Brad Gilbert (quarterfinals) Pete Sampras (quarterfinals) Goran Ivanišević (final) John McEnroe (semifinals) Jonas Svensson (quarterfinals)
Guy Forget (semifinals)| Semifinals | Final | ||||||||||||
| 1 | Stefan Edberg | 6 | 6 | ||||||||||
| 6/WC | John McEnroe | 1 | 4 | ||||||||||
| 1 | Stefan Edberg | 77 | 6 | ||||||||||
| 5 | Goran Ivanišević | 63 | 3 | ||||||||||
| 5 | Goran Ivanišević | 6 | 1 | 6 | |||||||||
| 8 | Guy Forget | 2 | 6 | 3 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | S Edberg | 3 | 6 | 6 | |||||||||||||||||||||||
| WC | D Wheaton | 6 | 3 | 6 | WC | D Wheaton | 6 | 1 | 2 | ||||||||||||||||||
| J Arias | 3 | 6 | 1 | 1 | S Edberg | 6 | 6 | ||||||||||||||||||||
 A Antonitsch | 4 | 3 | 7 | J Svensson | 4 | 2 | |||||||||||||||||||||
| WC | Y Noah | 6 | 6 | WC | Y Noah | 4 | 4 | ||||||||||||||||||||
| O Delaître | 3 | 4 | 7 | J Svensson | 6 | 6 | |||||||||||||||||||||
| 7 | J Svensson | 6 | 6 | 1 | S Edberg | 6 | 6 | ||||||||||||||||||||
| 6/WC | J McEnroe | 1 | 4 | ||||||||||||||||||||||||
| 3 | B Gilbert | 2 | 6 | 7 | |||||||||||||||||||||||
 U Riglewski | 2 | 6 | 0 | C-U Steeb | 6 | 1 | 5 | ||||||||||||||||||||
| C-U Steeb | 6 | 4 | 6 | 3 | B Gilbert | 3 | 2 | ||||||||||||||||||||
 S Bruguera | 6 | 1 | 3 | 6/WC | J McEnroe | 6 | 6 | ||||||||||||||||||||
| M Stich | 3 | 6 | 6 | M Stich | 3 | 5 | |||||||||||||||||||||
| Q |  N Borwick | 4 | 1 | 6/WC | J McEnroe | 6 | 7 | ||||||||||||||||||||
| 6/WC | J McEnroe | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | G Ivanišević | 6 | 6 | ||||||||||||||||||||||||
| Q |  G Pozzi | 3 | 1 | 5 | G Ivanišević | 6 | 2 | 6 | |||||||||||||||||||
| Q |  W Ferreira | 6 | 6 | Q | W Ferreira | 2 | 6 | 3 | |||||||||||||||||||
 R Agénor | 4 | 3 | 5 | G Ivanišević | 77 | 6 | |||||||||||||||||||||
| Q | F Montana | 6 | 6 | 6 | 4 | P Sampras | 65 | 3 | |||||||||||||||||||
| J-P Fleurian | 7 | 2 | 3 | Q | F Montana | 4 | 6 | ||||||||||||||||||||
| 4 | P Sampras | 6 | 7 | ||||||||||||||||||||||||
| 5 | G Ivanišević | 6 | 1 | 6 | |||||||||||||||||||||||
| 8 | G Forget | 7 | 7 | 8 | G Forget | 2 | 6 | 3 | |||||||||||||||||||
| G Muller | 6 | 6 | 8 | G Forget | 6 | 6 | |||||||||||||||||||||
 G Bloom | 1 | 2 |  P Haarhuis | 3 | 3 | ||||||||||||||||||||||
| P Haarhuis | 6 | 6 | 8 | G Forget | 64 | 6 | 7 | ||||||||||||||||||||
| B Shelton | 6 | 6 | 1 | 2 | A Gómez | 77 | 0 | 5 | |||||||||||||||||||
| E Jelen | 7 | 0 | 6 | E Jelen | 4 | 6 | 3 | ||||||||||||||||||||
| 2 | A Gómez | 6 | 3 | 6 | |||||||||||||||||||||||
Boris Becker defeated Goran Ivanišević 7–6(7–4), 4–6, 7–5 to win the 1993 Qatar ExxonMobil Open singles competition.
Pete Sampras was the defending champion but did not compete that year.
Goran Ivanišević defeated Guy Forget in the final, 7–6(7–2), 4–6, 7–6(7–5), 6–2 to win the singles tennis title at the 1992 Stockholm Open.
Michael Stich defeated the defending champion Goran Ivanišević in the final, 4–6, 7–6(8–6), 7–6(7–3), 6–2 to win the singles tennis title at the 1993 Stockholm Open.
Boris Becker defeated Goran Ivanišević in the final, 4–6, 6–4, 6–3, 7–6(7–4) to win the singles tennis title at the 1994 Stockholm Open.
Andre Agassi defeated Marc Rosset in the final, 6–3, 6–3, 4–6, 7–5 to win the singles tennis title at the 1994 Paris Open.
Thomas Muster defeated Sergi Bruguera in the final, 3–6, 7–6(7–5), 6–2, 6–3 to win the men's singles tennis title at the 1995 Italian Open.
Boris Becker defeated Stefan Edberg in the final, 6–4, 6–0, 6–3 to win the singles tennis title at the 1990 Stockholm Open.
Boris Becker was the defending champion but did not compete that year.
Stefan Edberg was the defending champion but lost in the final 6–4, 6–2, 6–4 to Goran Ivanišević.
Derrick Rostagno was the defending champion but lost in the semifinals to Goran Ivanišević.
Petr Korda was the defending champion but lost in the quarterfinals to Fabrice Santoro.
Michael Chang defeated Stefan Edberg in the final, 7–5, 0–6, 6–4 to win the singles tennis title at the 1993 Cincinnati Masters.
Jim Courier defeated Guy Forget in the final, 4–6, 6–3, 4–6, 6–3, 7–6(7–4) to win the men's singles tennis title at the 1991 Indian Wells Masters.
Thomas Enqvist was the defending champion but lost in the quarterfinals to Todd Martin.
Defending champion Boris Becker defeated Stefan Edberg in a rematch of the previous year's final, 3–6, 6–4, 1–6, 6–2, 6–2 to win the singles tennis title at the 1991 Stockholm Open.
Guy Forget defeated Pete Sampras in the final, 7–6(11–9), 4–6, 5–7, 6–4, 6–4 to win the singles tennis title at the 1991 Paris Open. Forget became the first French champion of the Paris Open.
Ivan Lendl was the defending champion, but lost in the semifinals this year.
Stefan Edberg was the defending champion, but lost in the quarterfinals this year.
Stefan Edberg was the defending champion, but lost in the final against Goran Ivanišević. The score was 6–7(5–7), 6–3, 6–4, 6–4.