| Singles | |
|---|---|
| 1988 Virginia Slims of Kansas | |
| 1987 Champion |  Barbara Potter |
| Champion |  Manuela Maleeva |
| Runner-up |  Sylvia Hanika |
| Score | 7–6, 7–5 |
Barbara Potter was the defending champion but lost in the second round to Pascale Paradis.
Manuela Maleeva won in the final 7–6, 7–5 against Sylvia Hanika.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Manuela Maleeva (champion) Barbara Potter (second round) Sylvia Hanika (final)
Dianne Balestrat (first round) Stephanie Rehe (first round)
Jana Novotná (quarterfinals) Claudia Porwik (first round)Steffi Graf defeated Gabriela Sabatini in the final, 6–3, 3–6, 6–1 to win the women's singles tennis title at the 1988 US Open. It was her first US Open singles title and fifth major title overall. With the win, she became the third woman to achieve the calendar Grand Slam, after Maureen Connolly and Margaret Court. Moreover, it was the fourth component of her calendar Golden Slam, which remains the only calendar Golden Slam achieved in tennis, men or women. It was Sabatini's maiden major final.
Five-time defending champion Martina Navratilova defeated Steffi Graf in the final, 7–5, 6–3 to win the ladies' singles tennis title at the 1987 Wimbledon Championships. It was her eighth Wimbledon singles title and 16th major singles title overall.
Martina Navratilova was the defending singles champion of the Virginia Slims of Washington tennis tournament and won in the final 6–1, 6–1 against Sylvia Hanika.
Bettina Bunge was the defending champion but lost in the quarterfinals to Martina Navratilova.
Martina Navratilova won in the final 6–2, 6–4 against Chris Evert-Lloyd.
Kathy Jordan was the defending champion but lost in the second round to Billie Jean King.
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.
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.
Steffi Graf was the defending champion but did not compete that year.
Steffi Graf was the defending champion and won the final on a walkover against Jana Novotná.
Steffi Graf was the defending champion going into the final against her rival Gabriela Sabatini. Just the previous month, Sabatini defeated Steffi Graf 3–6, 6–3, 7–5 in the final at Amelia Island, Florida. Now, in her native Germany, Steffi would turn the tables against Sabatini, beating her 6–3, 6–1. Prior to this match, Sabatini had played in four finals in 1989, with her winning twice. For Steffi, this victory was her seventh of the year, and marked the sixteenth time out of nineteen matches she had beaten Sabatini.
Steffi Graf was the defending champion and won in the final 7–5, 6–2 against Andrea Temesvári.
Steffi Graf was the defending champion and won in the final 6–4, 6–2 against Katerina Maleeva.
Barbara Potter won in the final 6–2, 6–2 against Helen Kelesi.
Manuela Maleeva was the defending champion but lost in the second round to Catarina Lindqvist.
Gabriela Sabatini was the defending champion but did not compete that year.
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.
Pam Shriver was the two-time defending champion and won in the final against Manuela Maleeva, 6–2, 7–6.
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.
