Tunis: Tunisia's Ons Jabeur and Spain's Paola Padosa, Tuesday, qualified for the quarter-finals of the Stuttgart Women's Doubles Tournament after beating the pair composed of Japanese Shoko Ayumi and Ukrainian Nadia Kishnuk by two sets to one, 4-6, 7-5, 10-5. Jabeur and Badosa will play German duo Nastasja Schunk and Ella Seide in the quarter-finals of the competition. Ons Jabeur, 9th in the world, will begin her single games in the German tournament in Stuttgart (500 points) on clay, Wednesday, by facing Russian Ekaterina Alexandrova, 16th in the world. Source: Agence Tunis Afrique Presse