1978 ABN World Tennis Tournament – Singles
| Singles | |
|---|---|
| 1978 ABN World Tennis Tournament | |
| Champion |
 Jimmy Connors
|
| Runner-up |
 Raúl Ramírez
|
| Final score | 7–5, 7–5 |
| Draw | 32 |
| Seeds | 8 |
was the defending champion of the singles event at the ABN World Tennis Tournament, but lost in the quarterfinals to first-seeded Jimmy Connors who won the title after a victory in the final against fourth-seeded Raúl Ramírez 7–5, 7–5.
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