1985 Buick WCT Finals – Singles
# 1985 Buick WCT Finals – Singles

John McEnroe was the defending champion but lost in the quarterfinals to Joakim Nyström.

Ivan Lendl won in the final 7–6, 6–4, 6–1 against Tim Mayotte.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

* John McEnroe (quarterfinals)
* Jimmy Connors (semifinals, retired)
* Ivan Lendl (champion)
* Mats Wilander (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

| First round | First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | | 1 | John McEnroe | 4 | 6 | 3 | | | | | | | | | | | | | |
| Henrik Sundström | 3 | 3 | 4 | | | | Joakim Nyström | 6 | 7 | 6 | | | | | | | | | | | | | |
| Joakim Nyström | 6 | 6 | 6 | | | | | | | | | | | Joakim Nyström | 4 | 6 | 2 | 5 | | | | | |
| | | | | | | | | | | | | | | Tim Mayotte | 6 | 4 | 6 | 7 | | | | | |
| | | | | | | 4 | Mats Wilander | 3 | 1 | 6 | | | | | | | | | | | | | |
| Andrés Gómez | 6 | 4 | 2 | | | | Tim Mayotte | 6 | 6 | 7 | | | | | | | | | | | | | |
| Tim Mayotte | 7 | 6 | 6 | | | | | | | | | | | | | | | | | Tim Mayotte | 6 | 4 | 1 |
| Anders Järryd | 6 | 2 | 2 | 7 | 3 | | | | | | | | | | | | | | 3 | Ivan Lendl | 7 | 6 | 6 |
| Stefan Edberg | 1 | 6 | 6 | 5 | 6 | | Stefan Edberg | 6 | 6 | 6 | 1 | 2 | | | | | | | | | | | |
| | | | | | | 3 | Ivan Lendl | 3 | 7 | 3 | 6 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | 3 | Ivan Lendl | 6 | 2 | | | | | | | |
| Aaron Krickstein | 7 | 2 | 6 | 2 | 7 | | | | | | | | 2 | Jimmy Connors | 3 | $1^r$ | | | | | | | |
| Eliot Teltscher | 5 | 6 | 3 | 6 | 5 | | Aaron Krickstein | 5 | 2 | 3 | | | | | | | | | | | | | |
| | | | | | | 2 | Jimmy Connors | 7 | 6 | 6 | | | | | | | | | | | | | |
