Tunis: World n°6 Ons Jabeur will defend her title at the Credit One Charleston Open, organised on April 1-7. Exempt from the first round, Jabeur will take on, April 3, the winner of a first round game pitting American Danielle Collins against Spanish Paula Badosa. The WTA 500 event will welcome four of the top 10 players in the world to its clay courts with Jessica Pegula, Ons Jabeur, Maria Sakkari and Jelena Ostapenko leading the charge. Top seeds in the singles tournament this year are American No.2 Jessica Pegula and defending champion Ons Jabeur, who is searching for form after a run of disappointing results. Jabeur has been struggling with a knee injury in recent months, which has contributed to losing her last four consecutive matches. Source: Agence Tunis Afrique Presse