A dramatic day at the Dubai Duty Free Tennis Championships saw defending champion Garbine Muguruza stretched by qualifier Katerina Siniakova, Ons Jabeur edge past Vera Zvonareva and third seed Paula Badosa defeated by qualifier Elena-Gabriela Ruse. Among other matches played on Tuesday, top seed Aryna Sabalenka eased past qualifier Marta Kostyuk 6-4 6-1, 2020 Australian Open winner Sofia Kenin was …






