| Singles | |
|---|---|
| 1991 Athens Open | |
| Champion |  Sergi Bruguera |
| Runner-up | Jordi Arrese |
| Final score | 7–5, 6–3 |
| Draw | 32 |
| Seeds | 8 |
Mark Koevermans was the defending champion, but lost in the quarterfinals this year.
Sergi Bruguera won the tournament, beating Jordi Arrese in the final, 7–5, 6–3.
Sergi Bruguera (champion)
Goran Prpić (first round) Javier Sánchez (second round)
Thomas Muster (semifinals) Francisco Clavet (semifinals)
Guillermo Pérez Roldán (quarterfinals) Martín Jaite (first round) Jordi Arrese (final)| Semifinals | Final | ||||||||||||
| 1 | Sergi Bruguera | 1 | 6 | 6 | |||||||||
| 4 | Thomas Muster | 6 | 2 | 0 | |||||||||
| 1 | Sergi Bruguera | 7 | 6 | ||||||||||
| 8 | Jordi Arrese | 5 | 3 | ||||||||||
| 5 | Francisco Clavet | 5 | 2 | ||||||||||
| 8 | Jordi Arrese | 7 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | S Bruguera | 6 | 7 | ||||||||||||||||||||||||
 P Kühnen | 2 | 5 | 1 | S Bruguera | 6 | 6 | |||||||||||||||||||||
| Q |  M Velev | 4 | 3 | Q |  W Kowalski | 2 | 1 | ||||||||||||||||||||
| Q | W Kowalski | 6 | 6 | 1 | S Bruguera | 6 | 6 | ||||||||||||||||||||
 M Vajda | 3 | 2 |  R Furlan | 2 | 2 | ||||||||||||||||||||||
| J Wöhrmann | 6 | 6 | J Wöhrmann | 5 | 0 | ||||||||||||||||||||||
| R Furlan | 6 | 3 | 6 | R Furlan | 7 | 6 | |||||||||||||||||||||
| 7 | M Jaite | 1 | 6 | 3 | 1 | S Bruguera | 1 | 6 | 6 | ||||||||||||||||||
| 4 | T Muster | 6 | 6 | 4 | T Muster | 6 | 2 | 0 | |||||||||||||||||||
 J Eltingh | 4 | 3 | 4 | T Muster | 6 | 6 | |||||||||||||||||||||
| F Yunis | 6 | 3 | 77 | F Yunis | 4 | 3 | |||||||||||||||||||||
| JC Báguena | 2 | 6 | 65 | 4 | T Muster | 6 | 3 | 77 | |||||||||||||||||||
| WC |  G Kalovelonis | 4 | 6 | 3 | 6 | G Pérez Roldán | 3 | 6 | 63 | ||||||||||||||||||
 B Wuyts | 6 | 3 | 6 | B Wuyts | 1 | 2 | |||||||||||||||||||||
| WC | A Bavelas | 3 | 1 | 6 | G Pérez Roldán | 6 | 6 | ||||||||||||||||||||
| 6 | G Pérez Roldán | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | F Clavet | 77 | 6 | ||||||||||||||||||||||||
| E Masso | 65 | 3 | 5 | F Clavet | 4 | 6 | 6 | ||||||||||||||||||||
| R Azar | 6 | 6 | R Azar | 6 | 4 | 0 | |||||||||||||||||||||
| Q | A Gaudenzi | 3 | 0 | 5 | F Clavet | 77 | 6 | ||||||||||||||||||||
 L Jonsson | 6 | 0 | 6 | L Jonsson | 65 | 1 | |||||||||||||||||||||
 M Filippini | 2 | 6 | 3 | L Jonsson | 6 | 3 | 6 | ||||||||||||||||||||
| B Karbacher | 4 | 63 | 3 | J Sánchez | 4 | 6 | 4 | ||||||||||||||||||||
| 3 | J Sánchez | 6 | 77 | 5 | F Clavet | 5 | 2 | ||||||||||||||||||||
| 8 | J Arrese | 78 | 6 | 8 | J Arrese | 7 | 6 | ||||||||||||||||||||
| Q | T Theine | 66 | 1 | 8 | J Arrese | 6 | 6 | ||||||||||||||||||||
| C Pistolesi | 2 | 6 | 1 | G Markus | 2 | 4 | |||||||||||||||||||||
| G Markus | 6 | 3 | 6 | 8 | J Arrese | 2 | 6 | 6 | |||||||||||||||||||
 TJ Middleton | 1 | 2 | M Koevermans | 6 | 3 | 4 | |||||||||||||||||||||
| M Koevermans | 6 | 6 | M Koevermans | 6 | 6 | ||||||||||||||||||||||
| M Zoecke | 77 | 3 | 6 | M Zoecke | 0 | 2 | |||||||||||||||||||||
| 2 | G Prpić | 64 | 6 | 4 | |||||||||||||||||||||||
Switzerland's Marc Rosset defeated Spain's Jordi Arrese in the final, 7–6(7–2), 6–4, 3–6, 4–6, 8–6 to win the gold medal in Men's Singles tennis at the 1992 Summer Olympics. Croatia's Goran Ivanišević and the Unified Team's Andrei Cherkasov won the bronze medals. All four nations won medals in men's singles for the first time.
Sergi Bruguera defeated the two-time defending champion Jim Courier in the final, 6–4, 2–6, 6–2, 3–6, 6–3 to win the men's singles tennis title at the 1993 French Open.
Sergi Bruguera defeated Cédric Pioline in the final, 7–6(7–2), 6–0 to win the singles tennis title at the 1993 Monte Carlo Open.
Andriy Medvedev defeated the defending champion Sergi Bruguera in the final, 7–5, 6–1, 6–3 to win the singles tennis title at the 1994 Monte Carlo 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.
Roberto Carretero defeated Àlex Corretja in the final, 2–6, 6–4, 6–4, 6–4 to win the singles tennis title at the 1996 Hamburg European Open.
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.
Sergi Bruguera was the defending champion but was forced to retire in the final losing 7–5, 3–0 against Jordi Arrese.
Francisco Clavet was the defending champion of the singles event at the Dutch Open men's tennis tournament, but he lost to Magnus Gustafsson.
Karel Nováček defeated Magnus Gustafsson in the final, 6–3, 6–3, 5–7, 0–6, 6–1 to win the singles tennis title at the 1991 Hamburg European Open.
Sergi Bruguera was the defending champion, but finished runner-up this year.
Jordi Arrese was the defending champion, but lost in the quarterfinals this year.
Marc Rosset was the defending champion, but lost in the semifinals this year.
Emilio Sánchez was the defending champion, but lost in the second round to Francisco Roig.
Andrés Gómez was the defending champion, but lost in the second round to Marcelo Filippini.
Andrei Medvedev was the defending champion, but did not compete this year.
Frédéric Fontang was the defending champion, but lost in the quarterfinals to Sergi Bruguera.
Guy Forget was the defending champion, but lost in the quarterfinals to Rodolphe Gilbert.
The 1994 Skoda Czech Open was a men's tennis tournament played on Clay in Prague, Czech Republic that was part of the International Series of the 1994 ATP Tour. Sergi Bruguera successfully defended his title, by defeating Andrei Medvedev 6–3, 6–4 in the final.
Goran Ivanišević was the defending champion but chose to compete at Los Angeles during the same week, reaching the semifinals.