1989 Banespa Open – Singles

Luiz Mattar won in the final 6–4, 5–7, 6–4 against Martín Jaite.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇧🇷 Luiz Mattar (champion)
 * 2) 🇦🇷 Horacio de la Peña (quarterfinals)
 * 3) 🇦🇷 Martín Jaite (final)
 * 4) 🇦🇷 Eduardo Bengoechea (quarterfinals)
 * 5) 🇧🇷 Cássio Motta (semifinals)
 * 6) 🇦🇷 Javier Frana (first round)
 * 7) 🇺🇸 Todd Witsken (semifinals)
 * 8) 🇺🇸 Tim Wilkison (first round)