1990 Seoul Open
| 1990 KAL Cup Korea Open | |
|---|---|
| Date | April 16 – April 23 |
| Edition | 4th |
| Champions | |
| Singles | |
 Alex Antonitsch
|
|
| Doubles | |
 Grant Connell / Glenn Michibata
|
|
The 1990 KAL Cup Korea Open was a tennis tournament played on outdoor hard courts that was part of the World Series of the 1990 ATP Tour. It was played at Seoul in South Korea from April 16 through April 23, 1990.
Alex Antonitsch defeated 
Pat Cash 7–6, 6–3
Grant Connell / Glenn Michibata defeated Jason Stoltenberg / Todd Woodbridge 7–6, 6–4
...
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