# 1990 Canadian Open – Men's singles

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.
Ivan Lendl was the three-time reigning champion, but did not compete that year.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top eight seeds received a bye into the second round.
* Andre Agassi (quarterfinals)
* Brad Gilbert (second round)
* John McEnroe (quarterfinals)
* Jay Berger (final)
* Pete Sampras (semifinals)
* Tim Mayotte (quarterfinals)
* Michael Chang (champion)
* Petr Korda (second round)
* David Wheaton (third round)
* Jim Grabb (second round)
* Richey Reneberg (third round)
* Kevin Curren (first round)
* Amos Mansdorf (third round)
* Jean-Philippe Fleurian (second round)
* Alexander Volkov (first round)
* Mark Kratzmann (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 7 | Michael Chang | 3 | 7$^7$ | 7 | | | | | |
| 5 | Pete Sampras | 6 | 6$^5$ | 5 | | | | | |
| 5 | Pete Sampras | 6 | 6$^5$ | 5 | 7 | Michael Chang | 4 | 6 | 7$^7$ |
| | | | | | 4 | Jay Berger | 6 | 3 | 6$^3$ |
| 4 | Jay Berger | 3 | 6 | 6 | 4 | Jay Berger | 6 | 3 | 6$^3$ |
| | Jakob Hlasek | 6 | 2 | 2 | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | A Agassi | 6 | 6 | 6 | | | | | | | | | |
| | T Högstedt | 4 | 2 | | | M Stich | 3 | 7 | 3 | | | | | | | | | |
| | M Stich | 6 | 6 | | | | | | | 1 | A Agassi | 6 | 6 | | | | | |
| | P Lundgren | 6 | 2 | | | | | | | | D Cahill | 2 | 4 | | | | | |
| | B Pearce | 7 | 6 | | | B Pearce | 4 | 4 | | | | | | | | | | |
| | D Cahill | 5 | 7 | 6 | | D Cahill | 6 | 6 | | | | | | | | | | |
| 15 | A Volkov | 7 | 5 | 3 | | | | | | | | | | 1 | A Agassi | 6 | 5 | 5 |
| 9 | D Wheaton | 6 | 6 | | | | | | | | | | | 7 | M Chang | 4 | 7 | 7 |
| | M Washington | 4 | 4 | | 9 | D Wheaton | 6 | 6 | | | | | | | | | | |
| | D Goldie | 4 | 4 | | Q | E Velez | 2 | 4 | | | | | | | | | | |
| Q | E Velez | 6 | 6 | | | | | | | 9 | D Wheaton | 0 | 3 | | | | | |
| | J Tarango | 2 | 2 | | | | | | | 7 | M Chang | 6 | 6 | | | | | |
| Q | B Dyke | 6 | 6 | | Q | B Dyke | 2 | 3 | | | | | | | | | | |
| | | | | | 7 | M Chang | 6 | 6 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | J McEnroe | 7 | 6 | | | | | | | | | | |
| | K Evernden | 1 | 6 | 6 | | G Connell | 6 | 1 | | | | | | | | | | |
| | G Connell | 6 | 4 | 7 | | | | | 3 | J McEnroe | 6 | 6 | | | | | | |
| WC | M Woodforde | 6 | 3 | 0 | | | | | 13 | A Mansdorf | 2 | 4 | | | | | | |
| | J Stoltenberg | 4 | 6 | 6 | | J Stoltenberg | 2 | 2 | | | | | | | | | | |
| | B Shelton | 6 | 6 | 1 | 13 | A Mansdorf | 6 | 6 | | | | | | | | | | |
| 13 | A Mansdorf | 7 | 4 | 6 | | | | | | | | | | 3 | J McEnroe | 6$^4$ | 6 | 3 |
| 12 | K Curren | 5 | 7 | 4 | | | | | | | | | | 5 | P Sampras | 7$^7$ | 4 | 6 |
| | A Sznajder | 7 | 6 | 6 | | A Sznajder | 7 | 6 | | | | | | | | | | |
| Q | P Wekesa | 6 | 6 | 6 | Q | P Wekesa | 6 | 3 | | | | | | | | | | |
| Q | G Pozzi | 2 | 7 | 2 | | | | | | A Sznajder | 6 | 3 | 2 | | | | | |
| WC | M Wostenholme | 4 | 6 | 6 | | | | | 5 | P Sampras | 4 | 6 | 6 | | | | | |
| | K Jones | 6 | 2 | 4 | WC | M Wostenholme | 3 | 2 | | | | | | | | | | |
| | | | | | 5 | P Sampras | 6 | 6 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | T Mayotte | 6 | 6 | | | | | | | | | | |
| WC | B Gyetko | 4 | 4 | | Q | C Garner | 3 | 2 | | | | | | | | | | |
| Q | C Garner | 6 | 6 | | | | | | | 6 | T Mayotte | 6 | 4 | 6 | | | | |
| | P Chamberlin | 6 | 7 | | | | | | | 11 | R Reneberg | 3 | 6 | 3 | | | | |
| | J Rive | 3 | 6 | | | P Chamberlin | 3 | 6 | 2 | | | | | | | | | |
| | G Bloom | 6 | 2 | 1 | 11 | R Reneberg | 6 | 2 | 6 | | | | | | | | | |
| 11 | R Reneberg | 2 | 6 | 6 | | | | | | | | | | | 6 | T Mayotte | 6$^2$ | 4 |
| 14 | J-P Fleurian | 7 | 6 | | | | | | | | | | | | 4 | J Berger | 7$^7$ | 6 |
| WC | G Michibata | 6 | 2 | | 14 | J-P Fleurian | 2 | 2 | | | | | | | | | | |
| Q | B Derlin | 6 | 0 | 1 | | D Rostagno | 6 | 6 | | | | | | | | | | |
| | D Rostagno | 2 | 6 | 6 | | | | | | | D Rostagno | 6 | 4 | 1 | | | | |
| | L Shiras | 6 | 6 | | | | | | | 4 | J Berger | 4 | 6 | 6 | | | | |
| | P Annacone | 1 | 4 | | | L Shiras | 2 | 4 | | | | | | | | | | |
| | | | | | 4 | J Berger | 6 | 6 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | P Korda | 7 | 4 | 4 | | | | | | |
| | S Davis | 3 | 2 | | | J Hlasek | 5 | 6 | 6 | | | | | | |
| | J Hlasek | 6 | 6 | | | | | | | J Hlasek | 7 | 6 | | | |
| Q | L Němeček | 1 | 5 | | | | | | | J Arias | 5 | 1 | | | |
| | J Arias | 6 | 7 | | | J Arias | 4 | | | | | | | | |
| | U Riglewski | 4 | 6 | | 10 | J Grabb | 1$^r$ | | | | | | | | |
| 10 | J Grabb | 6 | 7 | | | | | | | | | | J Hlasek | 6 | 6 |
| 16 | M Kratzmann | 3 | 6 | 6 | | | | | | | | | T Witsken | 4 | 2 |
| | S Youl | 6 | 4 | 3 | 16 | M Kratzmann | 6 | 5 | 2 | | | | | | |
| WC | C Pridham | 6 | 4 | | | R Krishnan | 2 | 7 | 6 | | | | | | |
| | R Krishnan | 7 | 6 | | | | | | | R Krishnan | 4 | 4 | | | |
| | M Šrejber | 6 | 6 | 4 | | | | | | T Witsken | 6 | 6 | | | |
| | T Witsken | 3 | 7 | 6 | | T Witsken | 7 | 4 | 6 | | | | | | |
| | | | | | 2 | B Gilbert | 5 | 6 | 2 | | | | | | |