Kim Clijsters' first WTA Tour match in eight years ended in defeat to Garbiñe Muguruza at the Dubai Duty Free Championships.
She was beaten 6-2, 7-6 (6) in an hour and 37 minutes.
Meanwhile, Tunisian Ons Jabeur is into the last 16 after beating American Alison Riske, 7-6, 1-6, 6-3. She’ll now play world number 2 Simona Halep.
Czech Barbora Strycova has graduated into the last 16 after beating Amanda Anisimova 7-6, 2-6, 6-4.


Munoz sends Colombia into World Cup last 32 with win over DR Congo
Qatar's sports minister, Madibo visit Canada's injured Kone
Budimir gives Croatia win to eliminate Panama in Group L
England fail to break down Ghana in goalless draw
Ronaldo guides Portugal to big win over Uzbekistan
