1985 Player's Canadian Open – Men's singles
# 1985 Player's Canadian Open – Men's singles

John McEnroe was the defending champion.

McEnroe successfully defended his title, defeating Ivan Lendl 7–5, 6–3 in the final.

## Seeds

* John McEnroe (champion)
* Ivan Lendl (final)
* Jimmy Connors (semifinals)
* Kevin Curren (third round)
* Anders Järryd (quarterfinals)
* Stefan Edberg (quarterfinals)
* Eliot Teltscher (quarterfinals)
* Johan Kriek (third round)
* Tim Mayotte (third round)
* Scott Davis (first round)
* Henrik Sundström (third round)
* Tomáš Šmíd (first round)
* Vitas Gerulaitis (third round)
* Sammy Giammalva Jr. (third round)
* Jimmy Arias (semifinals)
* Ramesh Krishnan (quarterfinals)

## 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 | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - |
| 1 | John McEnroe | 6 | 6 | | | | |
| 3 | Jimmy Connors | 2 | 3 | | | | |
| 3 | Jimmy Connors | 2 | 3 | 1 | John McEnroe | 7 | 6 |
| | | | | 2 | Ivan Lendl | 5 | 3 |
| 15 | Jimmy Arias | 4 | 2 | 2 | Ivan Lendl | 5 | 3 |
| 2 | Ivan Lendl | 6 | 6 | | | | |

### 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 1 | J McEnroe | 6 | 6 | | | | | | | | | |
| Q | G Connell | 6 | 3 | | | T Wilkison | 2 | 4 | | | | | | | | | |
| | T Wilkison | 7 | 6 | | | | | | | 1 | J McEnroe | 6 | 6 | | | | |
| | M Mitchell | 2 | 0 | | | | | | | Q | N Aerts | 0 | 1 | | | | |
| | M Wostenholme | 6 | 6 | | | M Wostenholme | 6 | 2 | | | | | | | | | |
| Q | N Aerts | 7 | 6 | | Q | N Aerts | 7 | 6 | | | | | | | | | |
| 10 | S Davis | 6 | 2 | | | | | | | | | | | 1 | J McEnroe | 6 | 6 |
| 16 | R Krishnan | 3 | 6 | 6 | | | | | | | | | | 16 | R Krishnan | 3 | 2 |
| | B Green | 6 | 3 | 1 | 16 | R Krishnan | 5 | 7 | 6 | | | | | | | | |
| | H Günthardt | 6 | 4 | 6 | | H Günthardt | 7 | 6 | 2 | | | | | | | | |
| | M De Palmer | 4 | 6 | 4 | | | | | | 16 | R Krishnan | 6 | 6 | | | | |
| | D Cassidy | 3 | 5 | | | | | | | 8 | J Kriek | 4 | 4 | | | | |
| Q | D Visser | 6 | 7 | | Q | D Visser | 6 | 0 | 6 | | | | | | | | |
| | | | | | 8 | J Kriek | 3 | 6 | 7 | | | | | | | | |

**Section 2**

| 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 3 | J Connors | 7 | 6 | | | | | | | | | |
| | P Složil | 3 | 3 | | | S Živojinović | 5 | 4 | | | | | | | | | |
| | S Živojinović | 6 | 6 | | | | | | | 3 | J Connors | 6 | 6 | | | | |
| | S Perkiss | 4 | 7 | 6 | | | | | | 13 | V Gerulaitis | 4 | 2 | | | | |
| | T Gullikson | 6 | 5 | 2 | | S Perkiss | 2 | 6 | | | | | | | | | |
| | V Pecci | 3 | 6 | 2 | 13 | V Gerulaitis | 6 | 7 | | | | | | | | | |
| 13 | V Gerulaitis | 6 | 4 | 6 | | | | | | | | | | 3 | J Connors | 6 | 6 |
| 11 | H Sundström | 6 | 6 | | | | | | | | | | | 6 | S Edberg | 4 | 1 |
| | D Segal | 1 | 2 | | 11 | H Sundström | 6 | 6 | | | | | | | | | |
| | J Lapidus | 6 | 6 | | | J Lapidus | 4 | 3 | | | | | | | | | |
| | K Flach | 2 | 4 | | | | | | | 11 | H Sundström | 6 | 4 | | | | |
| | C Hooper | 3 | 6 | 6 | | | | | | 6 | S Edberg | 7 | 6 | | | | |
| | P Fleming | 6 | 3 | 2 | | C Hooper | 3 | 6 | 6 | | | | | | | | |
| | | | | | 6 | S Edberg | 6 | 3 | 7 | | | | | | | | |

**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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 7 | E Teltscher | 7 | 0 | 6 | | | | | | | | | |
| WC | C Pridham | 0 | 6 | | Q | J Canter | 6 | 6 | 4 | | | | | | | | | |
| Q | J Canter | 6 | 7 | | | | | | | 7 | E Teltscher | 6 | 6 | | | | | |
| LL | T Högstedt | 6 | 4 | 3 | | | | | | 14 | S Giammalva Jr. | 4 | 4 | | | | | |
| Q | A Kohlberg | 3 | 6 | 6 | Q | A Kohlberg | 6 | 6 | 2 | | | | | | | | | |
| | G Forget | 6 | 6 | 4 | 14 | S Giammalva Jr. | 3 | 7 | 6 | | | | | | | | | |
| 14 | S Giammalva Jr. | 1 | 7 | 6 | | | | | | | | | | | 7 | E Teltscher | 1 | 6 |
| 15 | J Arias | 7 | 3 | 6 | | | | | | | | | | | 15 | J Arias | 6 | 7 |
| | B Scanlon | 6 | 6 | 4 | 15 | J Arias | 6 | 7 | | | | | | | | | | |
| | M Leach | 7 | 4 | 6 | | M Leach | 4 | 6 | | | | | | | | | | |
| | J Sadri | 6 | 6 | 2 | | | | | | 15 | J Arias | 4 | 6 | 6 | | | | |
| | W Masur | 7 | 6 | | | | | | | 4 | K Curren | 6 | 3 | 2 | | | | |
| | V Amritraj | 6 | 2 | | | W Masur | 7 | 6 | 4 | | | | | | | | | |
| | | | | | 4 | K Curren | 6 | 7 | 6 | | | | | | | | | |

**Section 4**

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 5 | A Järryd | 6 | 6 | | | | | | | | |
| WC | G Michibata | 6 | 6 | | WC | G Michibata | 1 | 2 | | | | | | | | |
| WC | L Dunlop | 3 | 4 | | | | | | 5 | A Järryd | 6 | 6 | | | | |
| | J Hlasek | 6 | 5 | 6 | | | | | WC | S Bonneau | 1 | 2 | | | | |
| | J Fitzgerald | 2 | 7 | 4 | | J Hlasek | 1 | 6 | | | | | | | | |
| WC | S Bonneau | 6 | 3 | 7 | WC | S Bonneau | 6 | 7 | | | | | | | | |
| 12 | T Šmíd | 3 | 6 | 5 | | | | | | | | | 5 | A Järryd | 1 | 0 |
| 9 | T Mayotte | 6 | 5 | 6 | | | | | | | | | 2 | I Lendl | 6 | 6 |
| Q | S Denton | 4 | 7 | 2 | 9 | T Mayotte | 6 | 7 | | | | | | | | |
| | T Benhabiles | 4 | 4 | | Q | M Robertson | 4 | 6 | | | | | | | | |
| Q | M Robertson | 6 | 6 | | | | | | 9 | T Mayotte | 6 | 2 | | | | |
| | M Flur | 3 | 6 | 6 | | | | | 2 | I Lendl | 7 | 6 | | | | |
| | P Annacone | 6 | 4 | 4 | | M Flur | 2 | 2 | | | | | | | | |
| | | | | | 2 | I Lendl | 6 | 6 | | | | | | | | |
