Charleston champions: From Lisicki to Bertens

In 2009, Sabine Lisicki beat Caroline Wozniacki in the final, 6-2, 6-4 (Getty)

Australia's Samantha Stosur picked up the 2010 trophy, defeating Vera Zvonareva 6-0, 6-3 (Getty)

Caroline Wozniacki was the 2011 champion when she beat Elena Vesnina 6-2, 6-3 in the final (Getty)

Serena Williams won her second Charleston title in 2012, dropping just one game as she defeated Lucie Safarova 6-0, 6-1 (Getty)

Williams won her third Charleston title the following year, beating Jelena Jankovic 3-6, 6-0, 6-2 (Getty)

Andrea Petkovic defeated Jana Cepelova 7-5, 6-2 in the 2014 final (Getty)

Angelique Kerber kept the title in German hands, beating Madison Keys in the 2015 final 6-2, 4-6, 7-5 (Getty)

Sloane Stephens was the 2016 champion, beating Elena Vesnina 7-6, 6-2 (Getty)

Daria Kasatkina and Jelena Ostapenko played the first 'Class of 1997' final - and the first all-teenage WTA final in eight years - at Charleston 2017, with the Russian taking victory, 6-3, 6-1, for her first title (Volvo Car Open)

Kiki Bertens is the defending champion, having beaten Julia Goerges 6-2, 6-1 in the 2018 final (tournament)