# 1979 ABN World Tennis Tournament – Singles

Jimmy Connors was the defending champion of the singles event at the ABN World Tennis Tournament, but did not participate in this edition. First-seeded Björn Borg won the title after a victory in the final against third-seeded John McEnroe 6–4, 6–2.

## Seeds

* Björn Borg (champion)
* Vitas Gerulaitis (quarterfinals)
* John McEnroe (final)
* Raúl Ramírez (quarterfinals)
* Ilie Năstase (first round)
* José Luis Clerc (second round)
* Wojtek Fibak (quarterfinals)
* Buster Mottram (second round)

## Draw
### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Björn Borg | 6 | 6 | | | | |
| | Peter Fleming | 1 | 4 | | | | |
| | Peter Fleming | 1 | 4 | 1 | Björn Borg | 6 | 6 |
| | | | | 3 | John McEnroe | 4 | 2 |
| 3 | John McEnroe | 6 | 6 | 3 | John McEnroe | 4 | 2 |
| | Vijay Amritraj | 0 | 3 | | | | |

### Upper half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Björn Borg | 6 | 6 | | | | | | | | | | | | | |
| | Mark Cox | 4 | 2 | | | | | | | | | | | | | |
| | Mark Cox | 4 | 2 | | 1 | Björn Borg | 6 | 6 | | | | | | | | |
| | | | | | | Louk Sanders | 3 | 2 | | | | | | | | |
| | David Schneider | 6 | 3 | 3 | | Louk Sanders | 3 | 2 | | | | | | | | |
| | Louk Sanders | 1 | 6 | 6 | | | | | | | | | | | | |
| | Louk Sanders | 1 | 6 | 6 | | | | | 1 | Björn Borg | 6 | 6 | | | | |
| | | | | | | | | | | Johan Kriek | 4 | 2 | | | | |
| | Johan Kriek | 7 | 6 | | | | | | | | | | Johan Kriek | 4 | 2 | | | | |
| Q | Dick Crealy | 6 | 2 | | | | | | | | | | | | | |
| Q | Dick Crealy | 6 | 2 | | | Johan Kriek | 6 | 6 | | | | | | | | |
| | | | | | 6 | José Luis Clerc | 4 | 2 | | | | | | | | |
| | Robert Reininger | 6 | 3 | | 6 | José Luis Clerc | 4 | 2 | | | | | | | | |
| 6 | José Luis Clerc | 7 | 6 | | | | | | | | | | | | | |
| 6 | José Luis Clerc | 7 | 6 | | | | | | | | | | 1 | Björn Borg | 6 | 6 |
| | | | | | | | | | | | | | | Peter Fleming | 2 | 2 |
| 4 | Raúl Ramírez | 6 | 6 | 7 | | | | | | | | | | | | | Peter Fleming | 2 | 2 |
| Q | John Feaver | 4 | 7 | 5 | | | | | | | | | | | | |
| Q | John Feaver | 4 | 7 | 5 | 4 | Raúl Ramírez | 6 | 7 | | | | | | | | |
| | | | | | | Paul Kronk | 2 | 5 | | | | | | | | |
| | Bernard Mitton | 6 | 7 | 6 | | Paul Kronk | 2 | 5 | | | | | | | | |
| | Paul Kronk | 7 | 6 | 7 | | | | | | | | | | | | |
| | Paul Kronk | 7 | 6 | 7 | | | | | 4 | Raúl Ramírez | 5 | 3 | | | | |
| | | | | | | | | | | Peter Fleming | 7 | 6 | | | | |
| | Anand Amritraj | 3 | 6 | | | | | | | | | | Peter Fleming | 7 | 6 | | | | |
| | Peter Fleming | 6 | 7 | | | | | | | | | | | | | |
| | Peter Fleming | 6 | 7 | | | Peter Fleming | 6 | 6 | | | | | | | | |
| | | | | | 8 | Buster Mottram | 3 | 4 | | | | | | | | |
| | Pat Dupre | 1 | 6 | 3 | 8 | Buster Mottram | 3 | 4 | | | | | | | | |
| 8 | Buster Mottram | 6 | 3 | 6 | | | | | | | | | | | | |

### Lower 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 | Wojtek Fibak | 6 | 6 | | | | | | | | | | | | | | | |
| | Ulrich Pinner | 1 | 2 | | | | | | | | | | | | | | | |
| | Ulrich Pinner | 1 | 2 | | 7 | Wojtek Fibak | 6 | 6 | | | | | | | | | | |
| | | | | | | Željko Franulović | 4 | 2 | | | | | | | | | | |
| | Deon Joubert | 6 | 1 | 1 | | Željko Franulović | 4 | 2 | | | | | | | | | | |
| | Željko Franulović | 2 | 6 | 6 | | | | | | | | | | | | | | |
| | Željko Franulović | 2 | 6 | 6 | | | | | | 7 | Wojtek Fibak | 3 | 1 | | | | | |
| | | | | | | | | | | 3 | John McEnroe | 6 | 6 | | | | | |
| | Tom Okker | 3 | 5 | | | | | | | | | | | 3 | John McEnroe | 6 | 6 | | | | |
| | Gene Mayer | 6 | 7 | | | | | | | | | | | | | | | |
| | Gene Mayer | 6 | 7 | | | Gene Mayer | 4 | 1 | | | | | | | | | | |
| | | | | | 3 | John McEnroe | 6 | 6 | | | | | | | | | | |
| | Heinz Günthardt | 2 | 1 | | 3 | John McEnroe | 6 | 6 | | | | | | | | | | |
| 3 | John McEnroe | 6 | 6 | | | | | | | | | | | | | | | |
| 3 | John McEnroe | 6 | 6 | | | | | | | | | | | | 3 | John McEnroe | 6 | 6 |
| | | | | | | | | | | | | | | | | Vijay Amritraj | 0 | 3 |
| 5 | Ilie Năstase | 6 | 7 | 4 | | | | | | | | | | | | | | | Vijay Amritraj | 0 | 3 |
| | Rolf Gehring | 7 | 5 | 6 | | | | | | | | | | | | | | |
| | Rolf Gehring | 7 | 5 | 6 | | Rolf Gehring | 6 | 3 | | | | | | | | | | |
| | | | | | | Vijay Amritraj | 7 | 6 | | | | | | | | | | |
| | Andrew Pattison | 5 | 2 | | | Vijay Amritraj | 7 | 6 | | | | | | | | | | |
| | Vijay Amritraj | 7 | 6 | | | | | | | | | | | | | | | |
| | Vijay Amritraj | 7 | 6 | | | | | | | | Vijay Amritraj | 6 | 7 | | | | | |
| | | | | | | | | | | 2 | Vitas Gerulaitis | 1 | 6 | | | | | |
| | Brian Teacher | 2 | 4 | | | | | | | | | | | 2 | Vitas Gerulaitis | 1 | 6 | | | | |
| | Geoff Masters | 6 | 6 | | | | | | | | | | | | | | | |
| | Geoff Masters | 6 | 6 | | | Geoff Masters | 7 | 4 | 2 | | | | | | | | | |
| | | | | | 2 | Vitas Gerulaitis | 6 | 6 | 6 | | | | | | | | | |
| | Peter Feigl | 1 | 4 | | 2 | Vitas Gerulaitis | 6 | 6 | 6 | | | | | | | | | |
| 2 | Vitas Gerulaitis | 6 | 6 | | | | | | | | | | | | | | | |