| Singles | |
|---|---|
| 1991 KAL Cup Korea Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–4, 1–6, 7–6(7–5) |
Alex Antonitsch was the defending champion, but he lost in the quarterfinals this year.
Patrick Baur won the tournament, beating Jeff Tarango in the final, 6–4, 1–6, 7–6(7–5).