Jabeur Retires From Sydney QF With Injury; Murray Reaches SF

Tunisia's Ons Jabeur in action during her match against Switzerland's Belinda Bencic, at the International Tennis Centre in Zayed Sports City, Abu Dhabi, United Arab Emirates, on Dec. 16, 2021. Christopher Pike/Reuters

SYDNEY—Ons Jabeur retired with a lower back injury in the Sydney Classic quarterfinals on Thursday, allowing Anett Kontaveit to advance.

The fourth-seeded Kontaveit advanced after the seventh-seeded Tunisian lost the opening set 6–4 and decided to stop soon after.