1989 CA-TennisTrophy – Singles

Horst Skoff was the defending champion but lost in the second round to Glenn Layendecker.

Paul Annacone won in the final 6–7, 6–4, 6–1, 2–6, 6–3 against Kelly Evernden.

Seeds

 * 1) 🇺🇸 Jay Berger (quarterfinals)
 * 2) 🇦🇹 Thomas Muster (semifinals)
 * 3) 🇦🇹 Horst Skoff (second round)
 * 4) 🇮🇹 Paolo Canè (second round)
 * 5)  Goran Prpić (second round)
 * 6) 🇪🇸 Jordi Arrese (first round)
 * 7) 🇸🇪 Anders Järryd (quarterfinals)
 * 8)  Goran Ivanišević (first round)