| Singles | |
|---|---|
| 1988 Virginia Slims of Arizona | |
| 1987 Champion |  Anne White |
| Champion |  Manuela Maleeva |
| Runner-up |  Dianne Van Rensburg |
| Final score | 6–3, 4–6, 6–2 |
Anne White was the defending champion but lost in the first round to Elly Hakami.
Manuela Maleeva won in the final 6–3, 4–6, 6–2 against Dianne Van Rensburg.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Manuela Maleeva (champion) Patty Fendick (second round)
Neige Dias (second round) Rosalyn Fairbank (quarterfinals)
Dianne Balestrat (first round) Peanut Louie-Harper (first round) Terry Phelps (quarterfinals)This was the first edition of the tournament for women.
Chris Evert was the defending champion but did not compete that year.
Barbara Potter was the defending champion but lost in the second round to Pascale Paradis.
Chris Evert was the defending champion and won in the final 7–6, 6–4 against Arantxa Sánchez.
Steffi Graf was the defending champion but did not compete that year.
Gabriela Sabatini was the defending champion but did not compete that year.
Jana Novotná was the defending champion but did not compete that year.
Manuela Maleeva-Fragniere and Leila Meskhi were the defending champions. Maleeva-Fragniere retired from tennis earlier that year, but only Meskhi competed that year with Eugenia Maniokova.
Chris Evert was the defending champion but did not compete that year.
Manuela Maleeva was the defending champion of the singles title at the 1989 Virginia Slims of Kansas tennis tournament but did not compete that year.
Jana Novotná and Catherine Suire were the defending champions but only Suire competed that year with Helen Kelesi.
Lori McNeil won in the final 6–1, 6–3 against Elna Reinach.
Manuela Maleeva was the defending champion but lost in the second round to Catarina Lindqvist.
Steffi Graf was the defending champion but did not compete that year.
Gabriela Sabatini was the defending champion but did not compete that year.
Manuela Maleeva and Tom Gullikson were the defending champions but lost in the second round to Kathleen Horvath and Leif Shiras.
Martina Navratilova and Pam Shriver were the defending champions but lost in the final 6–7(5–7), 6–2, 6–3 against Claudia Kohde-Kilsch and Helena Suková.
Top-seeded Manuela Maleeva was the defending champion but fell in the quarterfinals to Kate Gompert. Fourth-seed Andrea Temesvári claimed the title and $38,000 first prize money by defeating Zina Garrison in the final.
Seventh-seeded sisters Katerina Maleeva and Manuela Maleeva claimed the title by defeating third-seeds Penny Barg and Paula Smith in the final.
Fourth-seeded Andrea Temesvári was the defending champion but went out in the semifinals to Manuela Maleeva. Top-seed Maleeva won the final and $34,000 first prize money by defeating Lisa Bonder-Kreiss in the final.
