1990 KAL Cup Korea Open

The 1990 KAL Cup Korea Open was a men's tennis tournament played on outdoor hard courts that was part of the World Series of the 1990 ATP Tour. It was the fourth edition of the tournament and was played in Seoul, South Korea from April 16 through April 23, 1990. Unseeded Alex Antonitsch won the singles title.^[3]

1990 KAL Cup Korea Open
Date	16–23 April
Edition	4th
Category	World Series (Free Week)
Draw	32S / 16D
Prize money	$140,000
Surface	Hard / outdoor
Location	Seoul, South Korea
Champions
Singles
Alex Antonitsch[1]
Doubles
Grant Connell / Glenn Michibata[2]

Finals

Singles

Main article: 1990 KAL Cup Korea Open – Singles

Alex Antonitsch defeated Pat Cash 7–6, 6–3

• It was Antonitsch's only title of the year and the 3rd of his career.

Doubles

Main article: 1990 KAL Cup Korea Open – Doubles

Grant Connell / Glenn Michibata defeated Jason Stoltenberg / Todd Woodbridge 7–6, 6–4

• It was Connell's 1st title of the year and the 2nd of his career. It was Michibata's 1st title of the year and the 2nd of his career.