| Singles | |
|---|---|
| 1998 Piberstein Styrian Open | |
| Champion |  Patty Schnyder |
| Runner-up |  Gala León García |
| Final score | 6–2, 4–6, 6–3 |
| Draw | 32 |
| Seeds | 8 |
Barbara Schett was the defending champion but lost in the quarterfinals to Emmanuelle Gagliardi.
Patty Schnyder won in the final 6–2, 4–6, 6–3 against Gala León García.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Patty Schnyder (champion)
Sabine Appelmans (first round)
Barbara Paulus (quarterfinals) Barbara Schett (quarterfinals) Gala León García (final) Sylvia Plischke (quarterfinals)
Sandra Kleinová (first round) Emmanuelle Gagliardi (semifinals)Virginia Ruano Pascual and Paola Suárez were the two-time defending champions, but were defeated in the final by Kim Clijsters and Ai Sugiyama 7–6(7–5), 2–6, 7–9.
Nathalie Dechy and Meilen Tu were the defending champions but only Dechy competed that year with Émilie Loit.
Lindsay Davenport was the defending champion but lost in the quarterfinals to Serena Williams.
Cara Black and Alexandra Fusai were the defending champions but they competed with different partners that year, Black with Sandrine Testud and Fusai with Rita Grande.
Martina Hingis was the defending champion but lost in the semifinals to Venus Williams.
Irina Spîrlea was the defending champion but lost in the second round to Stephanie Devillé.
Henrieta Nagyová was the defending champion but lost in the final 6–4, 6–4 against Barbara Paulus.
Barbara Paulus was the defending champion but lost in the quarterfinals to María Sánchez Lorenzo.
Janette Husárová and Natalia Medvedeva were the defending champions but did not compete that year.
Dominique Van Roost was the defending champion but lost in the final 6–3, 6–2 against Patty Schnyder.
Lindsay Davenport was the defending champion but lost in the semifinals to Mary Pierce.
Iva Majoli was the defending champion but lost in the second round to Barbara Schett.
Jana Novotná was the defending champion but did not compete that year.
Eva Melicharová and Helena Vildová were the defending champions but did not compete that year.
Sandrine Testud was the defending champion but lost in the first round to Barbara Rittner.
Silvia Farina and Barbara Schett were the defending champions but only Schett competed that year with Patty Schnyder.
The 1999 Family Circle Cup singles was the singles event of the twenty-seventh edition of the tennis tournament played at Hilton Head, United States. It is the third WTA Tier I tournament of the year, and part of the US Spring tennis season. Amanda Coetzer was the defending champion but lost in the third round to Henrieta Nagyová.
The 1999 Bausch & Lomb Championships singles was the singles event of the twentieth edition of the Bausch & Lomb Championships; a WTA Tier II tournament held in Amelia Island, Florida, United States, played on green clay. Mary Pierce was the defending champion but lost in the quarterfinals to Conchita Martínez.
The 1999 WTA German Open singles was the singles event of the fifty-fifth edition of the tennis tournament played at Berlin, Germany, the most prestigious tennis tournament in Central Europe. It was the sixth WTA Tier I tournament of the year, and part of the European claycourt season. Conchita Martínez was the defending champion; Martínez lost in the third round to Arantxa Sánchez Vicario.
Conchita Martínez was the defending champion, but was forced to retire in her quarterfinals match against Gala León García.
