Boris Becker was the two-time defending champion but lost in the third round to Jay Berger.
Miloslav Mečíř won in the final 3–6, 2–6, 6–1, 6–2, 6–3 against Yannick Noah.
Seeds The top eight seeds received a bye into the second round.
Draw
Finals
Top half
Section 1
Section 2
Bottom half
Section 3
Section 4
References 1989 Newsweek Champions Cup Draw - Men's Final