Dubai - Four-time Grand Slam champion Kim Clijsters lost her first match in her second tennis comeback on Monday following a 6-2, 7-6 (8/6) defeat to Garbine Muguruza in the opening round of the WTA event in Dubai.
"I've seen her play when I started on the tour, she's an incredible player," Muguruza said of Clijsters.
Mother of three Clijsters, who was playing in Dubai for the first time in her career, was on the back foot from the start, losing serve in the first game of both sets.
Earlier, Ons Jabeur beat Alison Riske 7-6 (7/3), 1-6, 6-3 to earn a second-round date with top seed Simona Halep.
Barbora Strycova turned a corner after a poor start this season as she defeated US teenager Amanda Anisimova 7-6 (7/3), 2-6, 6-4, winning only her second match of 2020.