1989 Newsweek Champions Cup – Singles

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.

• # Boris Becker (third round)

• # 🇸🇪 Stefan Edberg (third round)

• # 🇺🇸 Andre Agassi (quarterfinals)

• # 🇺🇸 Jimmy Connors (semifinals)

• # Jakob Hlasek (third round)

• # 🇺🇸 Tim Mayotte (quarterfinals)

• # Miloslav Mečíř (champion)

• # 🇦🇹 Thomas Muster (second round)

• # 🇺🇸 Aaron Krickstein (first round)

• # 🇺🇸 Brad Gilbert (quarterfinals)

• # 🇪🇸 Emilio Sánchez (third round)

• # 🇫🇷 Yannick Noah (final)

• # Andrei Chesnokov (third round)

• # 🇺🇸 Kevin Curren (second round)

• # 🇪🇨 Andrés Gómez (second round)

• # 🇺🇸 Michael Chang (quarterfinals)