2018 Volvo Car Open

The 2018 Volvo Car Open was a women's tennis event on the 2018 WTA Tour. It took place between April 2 – 8, 2018 and was the 46th edition of the Charleston Open tournament and a Premier level tournament. The event took place at the Family Circle Tennis Center, on Daniel Island, Charleston, United States. It was the only event of the clay court season played on green clay.

Seeds

 * 1 Rankings as of March 19, 2018.

Other entrants
The following players received wildcards into the main draw:
 * 🇮🇹 Sara Errani
 * 🇺🇸 Bethanie Mattek-Sands

The following players received entry from the qualifying draw:
 * 🇺🇸 Francesca Di Lorenzo
 * 🇺🇸 Caroline Dolehide
 * 🇪🇸 Georgina García Pérez
 * 🇧🇾 Vera Lapko
 * 🇺🇸 Claire Liu
 * 🇪🇸 Sílvia Soler Espinosa
 * 🇭🇺 Fanny Stollár
 * 🇧🇪 Maryna Zanevska

The following player received entry as a lucky loser:
 * 🇺🇦 Dayana Yastremska

Withdrawals

 * Before the tournament
 * 🇺🇸 Catherine Bellis → replaced by 🇺🇸 Kristie Ahn
 * 🇪🇪 Kaia Kanepi → replaced by Polona Hercog
 * Ana Konjuh → replaced by 🇩🇪 Andrea Petkovic
 * Petra Martić → replaced by 🇺🇸 Sofia Kenin
 * 🇺🇸 Shelby Rogers → replaced by 🇺🇸 Jennifer Brady
 * 🇨🇿 Lucie Šafářová → replaced by 🇺🇸 Taylor Townsend
 * Maria Sakkari → replaced by 🇺🇸 Bernarda Pera
 * 🇺🇸 Sloane Stephens → replaced by 🇺🇦 Dayana Yastremska
 * 🇨🇿 Barbora Strýcová → replaced by 🇷🇺 Natalia Vikhlyantseva

Retirements

 * 🇧🇷 Beatriz Haddad Maia
 * 🇧🇾 Vera Lapko

Seeds

 * 1 Rankings as of March 19, 2018.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇪🇸 Lara Arruabarrena / 🇮🇹 Sara Errani
 * 🇯🇵 Misaki Doi / 🇺🇸 Christina McHale

Singles

 * Kiki Bertens def. 🇩🇪 Julia Görges, 6–2, 6–1

Doubles

 * 🇷🇺 Alla Kudryavtseva / Katarina Srebotnik def.  Andreja Klepač / 🇪🇸 María José Martínez Sánchez, 6–3, 6–3