1980 Player's Canadian Open – Men's singles
# 1980 Player's Canadian Open – Men's singles

Björn Borg was the defending champion, but retired in the final against Ivan Lendl due to a knee injury.

## Seeds

* Björn Borg (final, retired because of a knee injury)
* John McEnroe (second round, retired because of a twisted ankle)
* Vitas Gerulaitis (third round)
* Ivan Lendl (champion)
* John Sadri (quarterfinals)
* Heinz Günthardt (third round)
* Raúl Ramírez (first round)
* Brian Teacher (quarterfinals)
* Tim Gullikson (third round)
* N/A
* Andrew Pattison (second round)
* Peter Rennert (third round)
* Butch Walts (third round)
* N/A
* Bruce Manson (first 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Björn Borg | 6 | 6 | | | | | | | | | |
| 5 | John Sadri | 1 | 4 | | | | | | | | | |
| 5 | John Sadri | 1 | 4 | | 1 | Björn Borg | 6 | 6 | | | | |
| | | | | | | Sandy Mayer | 0 | 3 | | | | |
| | Sandy Mayer | 6 | 6 | | | Sandy Mayer | 0 | 3 | | | | |
| | Tom Leonard | 4 | 2 | | | | | | | | | |
| | Tom Leonard | 4 | 2 | | | | | | 1 | Björn Borg | 6 | $4^r$ |
| | | | | | | | | | 4 | Ivan Lendl | 4 | 5 |
| 8 | Brian Teacher | 3 | 6 | | | | | | | | | | 4 | Ivan Lendl | 4 | 5 |
| 4 | Ivan Lendl | 6 | 7 | | | | | | | | | |
| 4 | Ivan Lendl | 6 | 7 | | 4 | Ivan Lendl | 6 | 6 | | | | |
| | | | | | | Paul Kronk | 2 | 2 | | | | |
| | Paul Kronk | 2 | 6 | 6 | | Paul Kronk | 2 | 2 | | | | |
| | Trey Waltke | 6 | 3 | 3 | | | | | | | | |

### Top half

**Section 1**

| 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | B Borg | 6 | 6 | | | | | | | | | | | | | | |
| Q | S Rogul | 3 | 2 | | 1 | B Borg | 7 | 6 | | | | | | | | | |
| | To Gullikson | 7 | 6 | | | To Gullikson | 6 | 1 | | | | | | | | | |
| | J Fillol | 6 | 3 | | | | | | 1 | B Borg | 7 | 4 | 6 | | | | |
| Q | B Cowan | 6 | 6 | | | | | | 12 | P Rennert | 6 | 6 | 3 | | | | |
| Q | B Kleege | 4 | 3 | | Q | B Cowan | 3 | 4 | | | | | | | | | |
| | D Schneider | 1 | 1 | | 12 | P Rennert | 6 | 6 | | | | | | | | | |
| 12 | P Rennert | 6 | 6 | | | | | | | | | | | 1 | B Borg | 6 | 6 |
| | G Hardie | 3 | 6 | 6 | | | | | | | | | | 5 | J Sadri | 1 | 4 |
| | C Letcher | 6 | 2 | 2 | | G Hardie | 6 | 6 | | | | | | | | | |
| | R Moore | 6 | 5 | 7 | | R Moore | 2 | 3 | | | | | | | | | |
| | B Maze | 4 | 7 | 6 | | | | | | G Hardie | 1 | 1 | | | | | |
| | B Martin | 6 | 6 | | | | | | 5 | J Sadri | 6 | 6 | | | | | |
| | R Fagel | 4 | 3 | | | B Martin | 6 | 5 | | | | | | | | | |
| | J Kodeš | 4 | 3 | | 5 | J Sadri | 7 | 7 | | | | | | | | | |
| 5 | J Sadri | 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 3 | V Gerulaitis | 6 | 6 | | | | | | | | | | | | |
| | T Cain | 2 | 1 | | 3 | V Gerulaitis | 6 | 6 | | | | | | | |
| | R Fisher | 6 | 6 | | | R Fisher | 2 | 3 | | | | | | | |
| | F Synnaeghal | 0 | 0 | | | | | | 3 | V Gerulaitis | 6 | 3 | | | |
| | J Soares | 6 | 6 | | | | | | | S Mayer | 7 | 6 | | | |
| | P Hjertquist | 2 | 0 | | | J Soares | 0 | 1 | | | | | | | |
| | S Mayer | 6 | 7 | | | S Mayer | 6 | 6 | | | | | | | |
| LL | J Robbins | 2 | 6 | | | | | | | | | | S Mayer | 6 | 6 |
| | G Halder | 3 | 7 | 6 | | | | | | | | | T Leonard | 4 | 2 |
| 15 | B Manson | 6 | 6 | 4 | | G Halder | 3 | 3 | | | | | | | |
| | T Leonard | 6 | 6 | | | T Leonard | 6 | 6 | | | | | | | |
| Q | J Cohen | 1 | 4 | | | | | | | T Leonard | 6 | 6 | | | |
| Q | Á Fillol | 6 | 6 | | | | | | Q | Á Fillol | 4 | 2 | | | |
| | E Montaño | 1 | 4 | | Q | Á Fillol | 6 | 6 | | | | | | | |
| | R Van't Hof | 4 | 6 | 7 | | R Van't Hof | 1 | 2 | | | | | | | |
| 7 | R Ramírez | 6 | 1 | 6 | | | | | | | | | | | |

### Bottom half

**Section 3**

| 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 8 | B Teacher | 6 | 7 | | | | | | | | | | | | | | |
| | R Simpson | 3 | 6 | | 8 | B Teacher | 6 | 7 | | | | | | | | | |
| | L Palin | 6 | 2 | 6 | | L Palin | 3 | 5 | | | | | | | | | |
| | V Winitsky | 4 | 6 | 2 | | | | | 8 | B Teacher | 6 | 6 | 6 | | | | |
| | S Simonsson | 7 | 6 | | | | | | 13 | B Walts | 7 | 1 | 1 | | | | |
| Q | G Michibata | 6 | 2 | | | S Simonsson | 2 | 3 | | | | | | | | | |
| | M Grant | 3 | 2 | | 13 | B Walts | 6 | 6 | | | | | | | | | |
| 13 | B Walts | 6 | 6 | | | | | | | | | | | 8 | B Teacher | 3 | 6 |
| 9 | Ti Gullikson | 6 | 6 | 6 | | | | | | | | | | 4 | I Lendl | 6 | 7 |
| | S Bonneau | 0 | 7 | 1 | 9 | Ti Gullikson | 6 | 6 | | | | | | | | | |
| | T Wilkison | 6 | 6 | | | T Wilkison | 4 | 3 | | | | | | | | | |
| Q | R Meyer | 1 | 4 | | | | | | 9 | Ti Gullikson | 7 | 3 | 4 | | | | |
| | J James | 4 | | | | | | | 4 | I Lendl | 6 | 6 | 6 | | | | |
| | H Schoenfield | $0^r$ | | | | J James | 2 | 5 | | | | | | | | | |
| | C Dowdeswell | 3 | 1 | | 4 | I Lendl | 6 | 7 | | | | | | | | | |
| 4 | I Lendl | 6 | 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 6 | H Günthardt | 6 | 6 | | | | | | | | | | | | | |
| | S Docherty | 4 | 2 | | 6 | H Günthardt | 6 | 6 | | | | | | | | |
| | S Birner | 6 | 6 | 6 | | S Birner | 3 | 3 | | | | | | | | |
| | B Bertram | 7 | 4 | 4 | | | | | 6 | H Günthardt | 2 | 1 | | | | |
| | P Kronk | 7 | 6 | | | | | | | P Kronk | 6 | 6 | | | | |
| | Á Betancur | 6 | 1 | | | P Kronk | 7 | 6 | | | | | | | | |
| 11 | A Pattison | 7 | 6 | | 11 | A Pattison | 5 | 4 | | | | | | | | |
| | G Malin | 6 | 1 | | | | | | | | | | P Kronk | 2 | 6 | 6 |
| | K Curren | 3 | 6 | 7 | | | | | | | | | T Waltke | 6 | 3 | 3 |
| | G Aubone | 6 | 3 | 6 | | K Curren | 3 | 2 | | | | | | | | |
| | T Waltke | 6 | 6 | | | T Waltke | 6 | 6 | | | | | | | | |
| Q | B Miller | 2 | 2 | | | | | | | T Waltke | 6 | 6 | | | | |
| | E van Dillen | 6 | 6 | | | | | | | E van Dillen | 1 | 0 | | | | |
| | J Lloyd | 2 | 2 | | | E van Dillen | 3 | | | | | | | | | |
| | M Wostenholme | 0 | 4 | | 2 | J McEnroe | $4^r$ | | | | | | | | | |
| 2 | J McEnroe | 6 | 6 | | | | | | | | | | | | | |
