World No. 10 Ons Jabeur scored a routine win over Daria Kasatkina and now she is hoping to deliver a strong performance against Paula Badosa as she admits she has a tough task ahead of her. Jabeur, seeded at No. 7, saw off world No.26 Kasatkina 6-3 6-3 to reach the Stuttgart quarterfinal. After Jabeur sustained a season-ending elbow injury last year, she was forced to revamp her backhand. “I think I was forced to improve it because I literally couldn’t do any slices,” Jabeur told WTA Insider after her second-round win.”Defending-wise, I would always defend with the s …