| Men's doubles | |
|---|---|
| 1990 Italian Open | |
| Champions |  Sergio Casal Emilio Sánchez |
| Runners-up |  Jim Courier Martin Davis |
| Score | 7–6, 7–5 |
| Draw | 32 |
| Seeds | 8 |
Jim Courier and Pete Sampras were the defending champions, but Sampras did not participate this year. Courier partnered Martin Davis, losing in the final
Sergio Casal and Emilio Sánchez won the title, defeating Courier and Davis 7–6, 7–5 in the final. [1]
Rick Leach / Jim Pugh (first round) Jim Grabb / Patrick McEnroe (first round)
Jorge Lozano / Todd Witsken (quarterfinals)
Guy Forget / 
Jakob Hlasek (first round) Sergio Casal / Emilio Sánchez (champions)
Petr Korda / Tomáš Šmíd (first round)
Michael Mortensen / 
Tom Nijssen (first round) Patrick Galbraith / 
David Macpherson (first round)| Semifinals | Final | ||||||||||||
 Simone Colombo  Nicklas Utgren | 2 | 3 | |||||||||||
| 5 | Sergio Casal Emilio Sánchez | 6 | 6 | ||||||||||
| 5 | Sergio Casal Emilio Sánchez | 7 | 7 | ||||||||||
| Jim Courier Martin Davis | 6 | 5 | |||||||||||
| Broderick Dyke Laurie Warder | 3 | 4 | |||||||||||
| Jim Courier Martin Davis | 6 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Leach J Pugh | 7 | 5 | 3 | |||||||||||||||||||||||
 G Luza  L Mattar | 6 | 7 | 6 | G Luza L Mattar | 6 | 3 | |||||||||||||||||||||
| D Marcelino M Menezes | 2 | 6 | M Jaite C Motta | 7 | 6 | ||||||||||||||||||||||
| M Jaite C Motta | 6 | 7 | M Jaite C Motta | 6 | 3 | ||||||||||||||||||||||
| B Gilbert D Nargiso | 4 | 4 | S Colombo N Utgren | 7 | 6 | ||||||||||||||||||||||
| S Colombo N Utgren | 6 | 6 | S Colombo N Utgren | w/o | |||||||||||||||||||||||
| O Camporese P Canè | 6 | 1 | 6 | O Camporese P Canè | |||||||||||||||||||||||
| 8 | P Galbraith D Macpherson | 4 | 6 | 3 | S Colombo N Utgren | 2 | 3 | ||||||||||||||||||||
| 3 | J Lozano T Witsken | 6 | 4 | 6 | 5 | S Casal E Sánchez | 6 | 6 | |||||||||||||||||||
 C di Laura  M Filippini | 3 | 6 | 3 | 3 | J Lozano T Witsken | 6 | 3 | 6 | |||||||||||||||||||
| LL | N Bruno S Pescosolido | 6 | 2 | 3 | A Mancini G Pérez Roldán | 4 | 6 | 2 | |||||||||||||||||||
| A Mancini G Pérez Roldán | 1 | 6 | 6 | 3 | J Lozano T Witsken | 3 | 4 | ||||||||||||||||||||
| T Pawsat G Van Emburgh | 6 | 3 | 1 | 5 | S Casal E Sánchez | 6 | 6 | ||||||||||||||||||||
 S Kruger R Reneberg | 2 | 6 | 6 | S Kruger R Reneberg | 3 | 3 | |||||||||||||||||||||
| Q | F Beraldo A Gaudenzi | 1 | 6 | 3 | 5 | S Casal E Sánchez | 6 | 6 | |||||||||||||||||||
| 5 | S Casal E Sánchez | 6 | 2 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | P Korda T Šmíd | 4 | 5 | ||||||||||||||||||||||||
| B Dyke L Warder | 6 | 7 | B Dyke L Warder | 6 | 3 | 6 | |||||||||||||||||||||
 M Bahrami J-P Fleurian | 4 | 6 | 3 | T Carbonell C Costa | 2 | 6 | 2 | ||||||||||||||||||||
| T Carbonell C Costa | 6 | 3 | 6 | B Dyke L Warder | 6 | 6 | |||||||||||||||||||||
| T Anzari D Rikl | 6 | 1 | 3 | J Frana C Miniussi | 1 | 4 | |||||||||||||||||||||
| J Frana C Miniussi | 4 | 6 | 6 | M Jaite C Miniussi | 6 | 4 | 6 | ||||||||||||||||||||
| P Haarhuis M Schapers | 7 | 3 | 6 | P Haarhuis M Schapers | 3 | 6 | 4 | ||||||||||||||||||||
| 4 | G Forget J Hlasek | 6 | 6 | 3 | B Dyke L Warder | 3 | 4 | ||||||||||||||||||||
| 7 | M Mortensen T Nijssen | 3 | 2 | J Courier M Davis | 6 | 6 | |||||||||||||||||||||
| K Nováček M Šrejber | 6 | 6 | K Nováček M Šrejber | 1 | 5 | ||||||||||||||||||||||
| J Čihák C Suk | 3 | 6 | 6 | J Čihák C Suk | 6 | 7 | |||||||||||||||||||||
| C Beckman L Jensen | 6 | 4 | 3 | J Čihák C Suk | 2 | 6 | |||||||||||||||||||||
| J Courier M Davis | 6 | 3 | 6 | J Courier M Davis | 6 | 7 | |||||||||||||||||||||
| Q | C Caratti F Mordegan | 4 | 6 | 1 | J Courier M Davis | 6 | 6 | ||||||||||||||||||||
| J Sánchez J Yzaga | 6 | 6 | J Sánchez J Yzaga | 1 | 1 | ||||||||||||||||||||||
| 2 | J Grabb P McEnroe | 4 | 3 | ||||||||||||||||||||||||
Jim Courier defeated Andre Agassi in the final, 3–6, 6–4, 2–6, 6–1, 6–4 to win the men's singles tennis title at the 1991 French Open. It was his first major singles title.
Pete Sampras defeated Andre Agassi in the final, 6–4, 6–3, 6–2 to win the men's singles tennis title at the 1990 US Open. It was his first major title, and the first of a then-record 14 men's singles major titles overall.
Jim Courier defeated Carlos Costa in the final, 7–6(7–3), 6–0, 6–4 to win the men's singles tennis title at the 1992 Italian Open.
Jorge Lozano and Todd Witsken were the defending champions but lost in the first round to Rikard Bergh and Nicolás Pereira.
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.
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.
The 1991 German Open was a tennis tournament played on outdoor clay courts and was part of the ATP Championship Series of the 1991 ATP Tour. It took place at the Rothenbaum Tennis Center in Hamburg, Germany, from 6 May until 13 May 1991. Sergio Casal and Emilio Sánchez won in the final against Cássio Motta and Danie Visser, 7–6, 7–6.
Rick Leach and Jim Pugh were the defending champions, but lost in the semifinals to Grant Connell and Glenn Michibata.
Pieter Aldrich and Danie Visser won the title, defeating Connell and Michibata 6–4, 4–6, 6–1, 6–4, in the final.
Pieter Aldrich and Danie Visser were the defending champions, but lost in the first round to Paul Haarhuis and Mark Koevermans.
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Scott Davis and David Pate were the defending champions, but were defeated in the semifinals to fellow Americans Kelly Jones and Rick Leach.
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The men's doubles tournament at the 1989 French Open was held from 29 May until 11 June 1989 on the outdoor clay courts at the Stade Roland Garros in Paris, France. Jim Grabb and Patrick McEnroe won the title, defeating Mansour Bahrami and Éric Winogradsky in the final.
The men's doubles tournament at the 1989 US Open was held from August 28 to September 10, 1989, on the outdoor hard courts of the USTA National Tennis Center in New York City, United States. John McEnroe and Mark Woodforde won the title, defeating Ken Flach and Robert Seguso in the final.
The men's doubles tournament at the 1990 French Open was held from 28 May until 10 June 1990 on the outdoor clay courts at the Stade Roland Garros in Paris, France. Sergio Casal and Emilio Sánchez won the title, defeating Goran Ivanišević and Petr Korda in the final.
Emilio Sánchez won the men's singles tennis title at the 1991 Italian Open after Alberto Mancini retired from the final, with the scoreline at 6–3, 6–1, 3–0.ref name="wot1992">John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 128–129. ISBN 9780002184304.</ref>
Guy Forget defeated Pete Sampras in the final, 2–6, 7–6(7–4), 6–4 to win the singles tennis title at the 1991 Cincinnati Masters.
Sergio Casal and Emilio Sánchez successfully defended their title by defeating Carl-Uwe Steeb and Michael Stich in the final, 5–7, 6–4, 6–3.
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