| Singles | |
|---|---|
| 1991 U.S. Pro Indoor | |
| Champion |  Ivan Lendl |
| Runner-up |  Pete Sampras |
| Score | 5–7, 6–4, 6–4, 3–6, 6–3 |
| Draw | 48 |
| Seeds | 16 |
Pete Sampras was the defending champion.
Ivan Lendl won the title, defeating Sampras, 5–7, 6–4, 6–4, 3–6, 6–3 in the final. [1]
Ivan Lendl (champion) Pete Sampras (final) Brad Gilbert (semifinals) John McEnroe (semifinals) Jay Berger (second round) Jim Courier (second round)
Michael Stich (quarterfinals) Tim Mayotte (second round) Petr Korda (quarterfinals) Derrick Rostagno (second round)
Darren Cahill (third round)
Mark Koevermans (second round) Wally Masur (third round) Paul Haarhuis (third round)
Gary Muller (third round) Patrick McEnroe (second round)| Semifinals | Final | ||||||||||||||
| 1 | Ivan Lendl | 6 | 3 | 6 | |||||||||||
| 3 | Brad Gilbert | 4 | 6 | 4 | |||||||||||
| 1 | Ivan Lendl | 5 | 6 | 6 | 3 | 6 | |||||||||
| 2 | Pete Sampras | 7 | 4 | 4 | 6 | 3 | |||||||||
| 4/WC | John McEnroe | 2 | 4 | ||||||||||||
| 2 | Pete Sampras | 6 | 6 | ||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 1 | I Lendl | 6 | 7 | ||||||||||||||||||||||||
| Q | D Goldie | 4 | 67 |  G Raoux | 1 | 5 | |||||||||||||||||||||
| G Raoux | 6 | 79 | 1 | I Lendl | 77 | 6 | |||||||||||||||||||||
 R Furlan | 4 | 7 | 6 | 15 | G Muller | 65 | 3 | ||||||||||||||||||||
 V Paloheimo | 6 | 5 | 4 | R Furlan | 77 | 3 | 4 | ||||||||||||||||||||
| 15 | G Muller | 65 | 6 | 6 | |||||||||||||||||||||||
| 1 | I Lendl | 6 | 79 | ||||||||||||||||||||||||
| 7 | M Stich | 2 | 67 | ||||||||||||||||||||||||
| 10 | D Rostagno | 5 | 3 | ||||||||||||||||||||||||
| Q | G Stafford | 2 | 2 | Q | C Adams | 7 | 6 | ||||||||||||||||||||
| Q | C Adams | 6 | 6 | Q | C Adams | 4 | 4 | ||||||||||||||||||||
| Q | J Tarango | 5 | 4 | 7 | M Stich | 6 | 6 | ||||||||||||||||||||
| WC | C Caratti | 7 | 6 | WC | C Caratti | 2 | 4 | ||||||||||||||||||||
| 7 | M Stich | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 3 | B Gilbert | 6 | 6 | ||||||||||||||||||||||||
 T Carbonell | 6 | 6 | T Carbonell | 3 | 3 | ||||||||||||||||||||||
| WC |  G Bloom | 1 | 1 | 3 | B Gilbert | 77 | 6 | ||||||||||||||||||||
| U Riglewski | 6 | 63 | 6 | 14 | P Haarhuis | 63 | 1 | ||||||||||||||||||||
| Q | G Layendecker | 3 | 77 | 0 | U Riglewski | 1 | 3 | ||||||||||||||||||||
| 14 | P Haarhuis | 6 | 6 | ||||||||||||||||||||||||
| 3 | B Gilbert | 4 | 6 | 6 | |||||||||||||||||||||||
| K Curren | 6 | 3 | 0 | ||||||||||||||||||||||||
| 11 | D Cahill | 6 | 6 | ||||||||||||||||||||||||
 T Högstedt | 6 | 6 | T Högstedt | 4 | 2 | ||||||||||||||||||||||
 R Krishnan | 3 | 1 | 11 | D Cahill | 79 | 3 | 62 | ||||||||||||||||||||
| M Kratzmann | 3 | 77 | 4 | K Curren | 67 | 6 | 77 | ||||||||||||||||||||
| K Curren | 6 | 64 | 6 | K Curren | 6 | 6 | |||||||||||||||||||||
| 5 | J Berger | 1 | 2 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 6 | J Courier | 2 | 4 | ||||||||||||||||||||||||
| J Grabb | 6 | 6 | J Grabb | 6 | 6 | ||||||||||||||||||||||
| P Kühnen | 4 | 4 | J Grabb | 77 | 1 | 3 | |||||||||||||||||||||
| A Rahunen | 713 | 7 | A Rahunen | 63 | 6 | 6 | |||||||||||||||||||||
 G Connell | 611 | 5 | A Rahunen | 6 | 6 | ||||||||||||||||||||||
| 12 | M Koevermans | 1 | 2 | ||||||||||||||||||||||||
| A Rahunen | 5 | 3 | |||||||||||||||||||||||||
| 4/WC | J McEnroe | 7 | 6 | ||||||||||||||||||||||||
| 13 | W Masur | 4 | 77 | 77 | |||||||||||||||||||||||
| C van Rensburg | 6 | 6 | C van Rensburg | 6 | 61 | 65 | |||||||||||||||||||||
| B Pearce | 2 | 1 | 13 | W Masur | 62 | 4 | |||||||||||||||||||||
| A Mronz | 6 | 6 | 4/WC | J McEnroe | 77 | 6 | |||||||||||||||||||||
 H de la Peña | 2 | 2 | A Mronz | 1 | 2 | ||||||||||||||||||||||
| 4/WC | J McEnroe | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 8 | T Mayotte | 4 | 2 | ||||||||||||||||||||||||
| J-P Fleurian | 5 | 4 | Q | W Ferreira | 6 | 6 | |||||||||||||||||||||
| Q | W Ferreira | 7 | 6 | Q | W Ferreira | 5 | 63 | ||||||||||||||||||||
 J Yzaga | 6 | 6 | 9 | P Korda | 7 | 77 | |||||||||||||||||||||
| A Järryd | 3 | 3 | J Yzaga | 4 | 3 | ||||||||||||||||||||||
| 9 | P Korda | 6 | 6 | ||||||||||||||||||||||||
| 9 | P Korda | 4 | 0 | ||||||||||||||||||||||||
| 2 | P Sampras | 6 | 6 | ||||||||||||||||||||||||
| 16/WC | P McEnroe | 0 | 3 | ||||||||||||||||||||||||
 A Antonitsch | 61 | 6 | 0 | M Washington | 6 | 6 | |||||||||||||||||||||
| M Washington | 77 | 4 | 6 | M Washington | 3 | 67 | |||||||||||||||||||||
| M Šrejber | 6 | 62 | 6 | 2 | P Sampras | 6 | 79 | ||||||||||||||||||||
| S Davis | 4 | 77 | 3 | M Šrejber | 2 | 5 | |||||||||||||||||||||
| 2 | P Sampras | 6 | 7 | ||||||||||||||||||||||||
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.
Stefan Edberg defeated the defending champion Boris Becker in a rematch of the previous two years' finals, 6–2, 6–2, 3–6, 3–6, 6–4 to win the gentlemen's singles tennis title at the 1990 Wimbledon Championships. It was his second Wimbledon singles title and fourth major singles title overall.
Andre Agassi defeated Goran Ivanišević in the final, 6–7(8–10), 6–4, 6–4, 1–6, 6–4 to win the gentlemen's singles tennis title at the 1992 Wimbledon Championships. It was his first major title, and his first leg of an eventual career Grand Slam. Ivanisević became the first Croatian representing Croatia to reach a major final.
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.
Ivan Lendl defeated Miloslav Mečíř in the final, 6–2, 6–2, 6–2 to win the men's singles tennis title at the 1989 Australian Open. It was his first Australian Open title and seventh major singles title overall.
Boris Becker defeated the two-time defending champion Ivan Lendl in the final, 1–6, 6–4, 6–4, 6–4 to win the men's singles tennis title at the 1991 Australian Open. It was his first Australian Open title and fifth major singles title overall.
Jim Courier defeated Stefan Edberg in the final, 6–3, 3–6, 6–4, 6–2 to win the men's singles tennis title at the 1992 Australian Open. It was his first Australian Open title and second major singles title overall.
John McEnroe defeated Ivan Lendl in the final, 6–3, 6–4, 6–1 to win the men's singles tennis title at the 1984 US Open. It was his fourth US Open singles title and seventh and last major singles title overall. It was Lendl's third consecutive runner-up finish at the US Open.
Defending champion Pete Sampras defeated Andre Agassi in the final, 5–7, 6–3, 6–3 to win the men's singles tennis title at the 1994 Miami Open. With the win, he completed the Sunshine Double. The start of the final had been delayed for 50 minutes while Sampras received treatment for a stomach virus, and Agassi had the right to claim a walkover victory. Agassi instead chose to give Sampras the necessary time to receive the treatment that he needed so that he could play in the final.
Ivan Lendl was the defending champion, but chose not to participate that year.
Michael Chang defeated Jay Berger in the final, 4–6, 6–3, 7–6(7–3) to win the men's singles tennis title at the 1990 Canadian Open. With the win, Chang became the youngest Masters champion in history.
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.
Stefan Edberg won the singles tennis title at the 1990 Paris Open after the defending champion Boris Becker retired in the final, with the scoreline at 3–3.
Ivan Lendl was the defending champion and won in the final 6–3, 6–2 against Boris Becker.
Joakim Nyström was the champion of the event when it last took place, in 1986. He did not participate in 1990.
Ivan Lendl won the title, defeating Tim Mayotte 6–3, 6–0, in the final.
Andrei Chesnokov defeated Petr Korda in the final, 3–6, 6–4, 6–3 to win the men's singles tennis title at the 1991 Canadian Open.
Pete Sampras defeated Ivan Lendl in the final, 6–3, 3–6, 6–3 to win the singles tennis title at the 1992 Cincinnati Masters.
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.
First-seeded Pete Sampras was the defending champion, and won the title again defeating Michael Chang in the final 6–4, 6–2.
Michael Stich was the defending champion, but lost in the final to Ivan Lendl. The score was 7–5, 6–3.