# 1983 Donnay Indoor Championships – Singles

Vitas Gerulaitis was the defending champion, but lost in the semifinals this year.
Peter McNamara won the title, defeating Ivan Lendl 6–4, 4–6, 7–6 in the final.

## Seeds

* Ivan Lendl (final)
* Jimmy Connors (second round)
* Vitas Gerulaitis (semifinals)
* Mats Wilander (semifinals)
* Peter McNamara (champion)
* Yannick Noah (quarterfinals)
* Steve Denton (quarterfinals)
* Johan Kriek (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 | Final |
| 1 | Ivan Lendl | 7 | 7 | | | | | |
| 4 | Mats Wilander | 6 | 6 | | | | | |
| 4 | Mats Wilander | 6 | 6 | 1 | Ivan Lendl | 4 | 6 | 6 |
| | | | | 5 | Peter McNamara | 6 | 4 | 7 |
| 3 | Vitas Gerulaitis | 2 | 6 | 5 | Peter McNamara | 6 | 4 | 7 |
| 5 | Peter McNamara | 6 | 7 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | I Lendl | 7 | 6 | | | | | | | | | | | | | | |
| | B Teacher | 6 | 1 | | 1 | I Lendl | 6 | 7 | | | | | | | | | |
| | B Taróczy | 6 | 6 | | | B Taróczy | 3 | 5 | | | | | | | | | |
| | G Forget | 1 | 3 | | | | | | | 1 | I Lendl | 6 | 6 | | | | |
| | T Mayotte | 6 | 6 | | | | | | | 8 | J Kriek | 3 | 2 | | | | |
| | T Wilkison | 2 | 1 | | | T Mayotte | 7 | 2 | 4 | | | | | | | | |
| | J Grandjean | 6 | 2 | 1 | 8 | J Kriek | 5 | 6 | 6 | | | | | | | | |
| 8 | J Kriek | 3 | 6 | 6 | | | | | | | | | | 1 | I Lendl | 7 | 7 |
| 4 | M Wilander | 6 | 6 | | | | | | | | | | | 4 | M Wilander | 6 | 6 |
| | H Simonsson | 0 | 3 | | 4 | M Wilander | 6 | 6 | | | | | | | | | |
| Q | L Stefanki | 6 | 6 | 6 | Q | L Stefanki | 1 | 1 | | | | | | | | | |
| Q | C Dowdeswell | 7 | 4 | 4 | | | | | | 4 | M Wilander | 6 | 6 | | | | |
| Q | W Popp | 7 | 2 | 3 | | | | | | 6 | Y Noah | 3 | 2 | | | | |
| | V Van Patten | 5 | 6 | 6 | | V Van Patten | 6 | 4 | 6 | | | | | | | | |
| | Heinz Gildemeister | 4 | 4 | | 6 | Y Noah | 2 | 6 | 7 | | | | | | | | |
| 6 | Y Noah | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | S Denton | 6 | 6 | | | | | | | | | | | | | | |
| | S Glickstein | 1 | 3 | | 7 | S Denton | 6 | 6 | | | | | | | | | |
| | V Amritraj | 6 | 5 | 6 | | H Pfister | 4 | 3 | | | | | | | | | |
| | H Pfister | 4 | 7 | 7 | | | | | | 7 | S Denton | 6 | 4 | | | | |
| | D Bedel | 6 | 6 | 6 | | | | | | 3 | V Gerulaitis | 7 | 6 | | | | |
| | J Velasco Sr. | 3 | 7 | 1 | | D Bedel | 6 | 1 | 4 | | | | | | | | |
| | M De Palmer | 4 | 7 | 6 | 3 | V Gerulaitis | 3 | 6 | 6 | | | | | | | | |
| 3 | V Gerulaitis | 6 | 5 | 7 | | | | | | | | | | 3 | V Gerulaitis | 2 | 6 |
| 5 | P McNamara | 6 | 7 | | | | | | | | | | | 5 | P McNamara | 6 | 7 |
| | P Du Pré | 1 | 6 | | 5 | P McNamara | 7 | 6 | | | | | | | | | |
| | B Boileau | 2 | 4 | | | F Buehning | 5 | 1 | | | | | | | | | |
| | F Buehning | 6 | 6 | | | | | | | 5 | P McNamara | 6 | 7 | | | | |
| | K Curren | 6 | 7 | | | | | | | | K Curren | 4 | 5 | | | | |
| | J Sadri | 3 | 6 | | | K Curren | 6 | 7 | | | | | | | | | |
| Q | K Eberhard | 2 | 3 | | 2 | J Connors | 2 | 5 | | | | | | | | | |
| 2 | J Connors | 6 | 6 | | | | | | | | | | | | | | |