1989 Virginia Slims of Oklahoma – Singles
Introduction Lori McNeil was the defending champion but lost in the second round to Betsy Nagelsen.Manon Bollegraf won in the final 6–4, 6–4 against Leila Meskhi.
Seeds A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.#  Lori McNeil ''(second round)''#  Larisa Savchenko ''(second round)''#  Raffaella Reggi ''(semifinals)''#  Leila Meskhi ''(final)''#  Ann Grossman ''(second round)''#  Amy Frazier ''(quarterfinals)''#  Dianne Balestrat ''(second round)''#  Etsuko Inoue ''(semifinals)''
Draw
External links *  1989 Virginia Slims of Oklahoma draw